Objective:To correlate the utility of the Fundamentals of Laparoscopic Surgery(FLS)manual skills program with the Objective Structured Assessment of Technical Skills(OSATS)global rating scale in evaluating operative p...Objective:To correlate the utility of the Fundamentals of Laparoscopic Surgery(FLS)manual skills program with the Objective Structured Assessment of Technical Skills(OSATS)global rating scale in evaluating operative performance.Methods:The Asian Urological Surgery Training and Educational Group(AUSTEG)Laparoscopic Upper Tract Surgery Course implemented and validated the FLS program for its usage in laparoscopic surgical training.Delegates’basic laparoscopic skills were assessed using three different training models(peg transfer,precision cutting,and intra-corporeal suturing).They also performed live porcine laparoscopic surgery at the same workshop.Live surgery skills were assessed by blinded faculty using the OSATS rating scale.Results:From March 2016 to March 2019,a total of 81 certified urologists participated in the course,with a median of 5 years of post-residency experience.Although differences in task time did not reach statistical significance,those with more surgical experience were visibly faster at completing the peg transfer and intra-corporeal suturing FLS tasks.However,they took longer to complete the precision cutting task than participants with less experience.Overall OSATS scores correlated weakly with all three FLS tasks(peg transfer time:r=0.331,r^(2)=0.110;precision cutting time:r=0.240,r^(2)=0.058;suturing with intracorporeal knot time:r=0.451,r^(2)=0.203).Conclusion:FLS task parameters did not correlate strongly with OSATS globing rating scale performance.Although FLS task models demonstrated strong validity,it is important to assimilate the inconsistencies when benchmarking technical proficiency against real-life operative competence,as evaluated by FLS and OSATS,respectively.展开更多
Objective:This study aimed to investigate the effectiveness and value of MRI and CT in the diagnosis of retroperitoneal tumours.Methods:60 patients with retroperitoneal tumours admitted to our hospital between July 20...Objective:This study aimed to investigate the effectiveness and value of MRI and CT in the diagnosis of retroperitoneal tumours.Methods:60 patients with retroperitoneal tumours admitted to our hospital between July 2022 and March 2023 were selected as the study subjects.All of them received MRI and CT examinations.The detection of the two examination methods was compared and analyzed using the pathological findings as the standard.Results:The detection rate of MRI(58/60,96.67%)was significantly higher than that of CT(50/60,83.33%),and the difference was significant(P=0.015<0.05).Conclusion:Both MRI and CT have important application values in the diagnosis of retroperitoneal tumours.MRI has advantages in observing soft tissue structures,nerve tissues,etc.,and can provide more detailed anatomical structure information,which can help differentiate the retroperitoneal tumours and locate them accurately.CT,on the other hand,has unique advantages in observing the skeletal structure and the density of certain tumours,etc.It can quickly obtain comprehensive imaging information,which helps to determine the extent and invasion of the tumour.展开更多
According to a meta-analysis, H pylori and non-steroidal anti-inflammatory drugs (NSAID) independently and significantly increase the risk of gastroduodenal ulcer and ulcer bleeding. Their coincidence is frequent, d...According to a meta-analysis, H pylori and non-steroidal anti-inflammatory drugs (NSAID) independently and significantly increase the risk of gastroduodenal ulcer and ulcer bleeding. Their coincidence is frequent, demonstration of a possible relationship and consequent attitude is of important implications. But unfortunately, no consensus has been approved in the past years and their interactions are still controversial. H pylori and NSAID are known to share a number of pathogenic mechanisms, but there is no evidence for the significant synergic action between these two risk factors. Their relationship is independent, additive, synergistic or antagonistic without considering the influence of other factors because studies on this subject are different in almost all aspects of their methodology, including the definition of a NSAID user as well as the types, doses, duration and their indications for NSAID use, as well as their end-points, definition of dyspepsia and regimes used for eradication of H pylori. These might contribute to the conflicting results and opinions. H pylori infection in humans does not act synergistically with NSAID on ulcer healing, and there is no need to eradicate it. This notion is supported by the finding that the eradication of H pylori does not affect NSAID induced gastropathy treated with omeprazole and that H pylori infection induces a strong cyclooxygenase-2 (COX-2) expression resulting in excessive biosynthesis of gastroprotective prostaglandin which in turn counteracts NSAID-induced gastropathy and heals the existing ulcer. Other investigators claimed that H pylori infection acts synergistically with NSAID on ulcer development, and H pylori should be eradicated, particularly at the start of long-term NSAID therapy. Eradication of H pylori prior to NSAID treatment does not appear to accelerate ulcer healing or to prevent recurrent ulcers in NSAID users. However, some recommendations can be drawn from the results of clinical trails.展开更多
Objective To compare the similarities and differences of early CT manifestations of three types of viral pneumonia induced by SARS-CoV-2(COVID-19),SARS-CoV(SARS)and MERS-CoV(MERS)using a systemic review.Methods Electr...Objective To compare the similarities and differences of early CT manifestations of three types of viral pneumonia induced by SARS-CoV-2(COVID-19),SARS-CoV(SARS)and MERS-CoV(MERS)using a systemic review.Methods Electronic database were searched to identify all original articles and case reports presenting chest CT features for adult patients with COVID-19,SARS and MERS pneumonia respectively.Quality of literature and completeness of presented data were evaluated by consensus reached by three radiologists.Vote-counting method was employed to include cases of each group.Data of patients’manifestations in early chest CT including lesion patterns,distribution of lesions and specific imaging signs for the three groups were extracted and recorded.Data were compared and analyzed using SPSS 22.0.Results A total of 24 studies were included,composing of 10 studies of COVID-19,5 studies of MERS and 9 studies of SARS.The included CT exams were 147,40,and 122 respectively.For the early CT features of the 3 pneumonias,the basic lesion pattern with respect to"mixed ground glass opacity(GGO)and consolidation,GGO mainly,or consolidation mainly"was similar among the 3 groups(χ^2=7.966,P>0.05).There were no significant differences on the lesion distribution(χ^2=13.053,P>0.05)and predominate involvement of the subpleural area of bilateral lower lobes(χ^2=4.809,P>0.05)among the 3 groups.The lesions appeared more focal in COVID-19 pneumonia at early phase(χ^2=23.509,P<0.05).The proportions of crazy-paving pattern(χ^2=23.037,P<0.001),organizing pneumonia pattern(P<0.05)and pleural effusions(P<0.001)in COVID-19 pneumonia were significantly lower than the other two.Although rarely shown in the early CT findings of all three viral pneumonias,the fibrotic changes were more frequent in SARS than COVID-19 and MERS(χ^2=6.275,P<0.05).For other imaging signs,only the MERS pneumonia demonstrated tree-in-buds,cavitation,and its incidence rate of interlobular or intralobular septal thickening presented significantly increased as compared to the other two pneumonia(χ^2=22.412,P<0.05).No pneumothorax,pneumomediastinum and lymphadenopathy was present for each group.Conclusions Imaging findings on early stage of these three coronavirus pneumonias showed similar basic lesion patterns,including GGO and consolidation,bilateral distribution,and predominant involvement of the subpleural area and the lower lobes.Early signs of COVID-19 pneumonia showed less severity of inflammation.Early fibrotic changes appeared in SARS only.MERS had more severe inflammatory changes including cavitation and pleural effusion.The differences may indicate the specific pathophysiological processes for each coronavirus pneumonia.展开更多
Ovarian cancer is one of the three most common gynecological cancers in the world,and is regarded as a priority in terms of women’s cancer.In the past few years,many researchers have attempted to develop and apply ar...Ovarian cancer is one of the three most common gynecological cancers in the world,and is regarded as a priority in terms of women’s cancer.In the past few years,many researchers have attempted to develop and apply artificial intelligence(AI)techniques to multiple clinical scenarios of ovarian cancer,especially in the field of medical imaging.AI-assisted imaging studies have involved computer tomography(CT),ultrasonography(US),and magnetic resonance imaging(MRI).In this review,we perform a literature search on the published studies that using AI techniques in the medical care of ovarian cancer,and bring up the advances in terms of four clinical aspects,including medical diagnosis,pathological classification,targeted biopsy guidance,and prognosis prediction.Meanwhile,current status and existing issues of the researches on AI application in ovarian cancer are discussed.展开更多
Objective We developed a universal lesion detector(ULDor)which showed good performance in in-lab experiments.The study aims to evaluate the performance and its ability to generalize in clinical setting via both extern...Objective We developed a universal lesion detector(ULDor)which showed good performance in in-lab experiments.The study aims to evaluate the performance and its ability to generalize in clinical setting via both external and internal validation.Methods The ULDor system consists of a convolutional neural network(CNN)trained on around 80 K lesion annotations from about 12 K CT studies in the DeepLesion dataset and 5 other public organ-specific datasets.During the validation process,the test sets include two parts:the external validation dataset which was comprised of 164 sets of non-contrasted chest and upper abdomen CT scans from a comprehensive hospital,and the internal validation dataset which was comprised of 187 sets of low-dose helical CT scans from the National Lung Screening Trial(NLST).We ran the model on the two test sets to output lesion detection.Three board-certified radiologists read the CT scans and verified the detection results of ULDor.We used positive predictive value(PPV)and sensitivity to evaluate the performance of the model in detecting space-occupying lesions at all extra-pulmonary organs visualized on CT images,including liver,kidney,pancreas,adrenal,spleen,esophagus,thyroid,lymph nodes,body wall,thoracic spine,etc.Results In the external validation,the lesion-level PPV and sensitivity of the model were 57.9%and 67.0%,respectively.On average,the model detected 2.1 findings per set,and among them,0.9 were false positives.ULDor worked well for detecting liver lesions,with a PPV of 78.9%and a sensitivity of 92.7%,followed by kidney,with a PPV of 70.0%and a sensitivity of 58.3%.In internal validation with NLST test set,ULDor obtained a PPV of 75.3%and a sensitivity of 52.0%despite the relatively high noise level of soft tissue on images.Conclusions The performance tests of ULDor with the external real-world data have shown its high effectiveness in multiple-purposed detection for lesions in certain organs.With further optimisation and iterative upgrades,ULDor may be well suited for extensive application to external data.展开更多
BACKGROUND Acute myocardial infarction(AMI)during pregnancy is rare,especially in twin pregnancy,and it can endanger the lives of the mother and children.Except for conventional cardiovascular risk factors,pregnancy a...BACKGROUND Acute myocardial infarction(AMI)during pregnancy is rare,especially in twin pregnancy,and it can endanger the lives of the mother and children.Except for conventional cardiovascular risk factors,pregnancy and assisted reproduction can increase the risk of AMI during pregnancy.AMI develops secondary to different etiologies,such as coronary spasm and spontaneous coronary artery dissection.CASE SUMMARY A 33-year-old woman,with twin pregnancy in the 31st week of gestation,presented to the hospital with intermittent chest tightness for 12 wk,aggravation for 1 wk,and chest pain for 4 h.Combined with the electrocardiogram and hypersensitive troponin results,she was diagnosed with acute ST-elevation myocardial infarction.Although the patient had no related medical history,she presented several risk factors,such as age greater than 30 years,assisted reproduction,and hyperlipidemia.After diagnosis,the patient received antiplatelet and anticoagulant treatment.Cesarean section and coronary angiography performed 7 d later showed stenosis and thrombus shadow of the right coronary artery.After receiving medication,the patient was in good condition.CONCLUSION This case suggests that,with the widespread use of assisted reproductive technology,more attention should be paid to perinatal healthcare,especially when chest pain occurs,to facilitate early diagnosis and intervention of AMI,and the etiology of AMI in pregnancy needs to be differentiated,especially between coronary spasm and spontaneous coronary artery dissection.展开更多
Objective:This study aimed to describe the implementation of the surgical safety check policy and the surgical safety checklist for invasive procedures outside the operating room(OR)and evaluate its effectiveness.Meth...Objective:This study aimed to describe the implementation of the surgical safety check policy and the surgical safety checklist for invasive procedures outside the operating room(OR)and evaluate its effectiveness.Methods:In 2017,to improve the safety of patients who underwent invasive procedures outside of the OR,the hospital quality and safety committee established the surgery safety check committee responsible for developing a new working plan,revise the surgery safety check policy,surgery safety check Keywords:Invasive procedures outside the operating room Safety management Surgical safety checklist Patient safety form,and provide training to the related staff,evaluated their competency,and implemented the updated surgical safety check policy and checklist.The study compared the data of pre-implementation(Apr to Sep 2017)and two post-implementation phases(Apr to Sep 2018,Apr to Sep 2019).It also evaluated the number of completed surgery safety checklist,correct signature,and correct timing of signature.Results:The results showed an increase in the completion rate of the safety checklist after the program implementation from 41.7%(521/1,249)to 90.4%(3,572/3,950),the correct rates of signature from 41.9%(218/521)to 99.0%(4,423/4,465),and the correct timing rates of signature from 34.4%(179/521)to 98.5%(4,401/4,465),with statistical significance(P<0.01).Conclusion:Implementing the updated surgery safety check significantly is a necessary and effective measure to ensure patient safety for those who underwent invasive procedures outside the OR.Implementing surgical safety checks roused up the clinical staff's compliance in performing safety checks,and enhanced team collaboration and communication.展开更多
PRELUDE A handful of Qinghao(Artemisiae Annuae Herba)in 2 liters of water,immersed for more than an one thousand years,blossomed for you.One mission made up of thousands of experiments.Extracted the essence of ancient...PRELUDE A handful of Qinghao(Artemisiae Annuae Herba)in 2 liters of water,immersed for more than an one thousand years,blossomed for you.One mission made up of thousands of experiments.Extracted the essence of ancient culture,yet deeply implanted in the contemporary world,helped mankind to survive a catastrophe.展开更多
Background:Numerous previous studies have shown that renal insufficiency (RI) in patients with acute coronary syndrome is associated with poor cardiovascular outcomes.These studies do not well address the impact of...Background:Numerous previous studies have shown that renal insufficiency (RI) in patients with acute coronary syndrome is associated with poor cardiovascular outcomes.These studies do not well address the impact of RI on the long-term outcome of patients with acute ST-elevation myocardial infarction (STEMI) in China.The aim of this study was to investigate the association of admission RI and inhospital and long-term mortality of patients with acute STEMI.Methods:This was a multicenter,observational,prospective-cohort study.718 consecutive patients were admitted to 19 hospitals in Beijing within 24 hours of onset of STEMI,between January 1,2006 and December 31,2006.Estimation of glomerular filtration rate (eGFR) was calculated using the modified abbreviated modification of diet in renal disease equation-based on the Chinese chronic kidney disease patients.The patients were categorized according to eGFR,as normal renal dysfunction (eGFR ≥ 90 ml·min^-1·1.73 m^-2),mild RI (60 ml·min^-1· 1.73 m^-2 〈 eGFR 〈 90 ml·min^-1· 1.73 m^2) and moderate or severe RI (eGFR 〈 60 ml·min^-1· 1.73 m^2).The association between RI and inhospital and 6-year mortality of was evaluated.Results:Seven hundred and eighteen patients with STEMI were evaluated.There were 551 men and 167 women with a mean age of 61.0 &#177; 13.0 years.Two hundred and eighty patients (39.0%) had RI,in which 61 patients (8.5%) reached the level of moderate or severe RI.Patients with RI were more often female,elderly,hypertensive,and more patients had heart failure and stroke with higher killip class.Patients with RI were less likely to present with chest pain.The inhospital mortality (1.4% vs.5.9% vs.22.9%,P 〈 0.001),6-year all-cause mortality (9.5% vs.19.8 vs.45.2%,P 〈 0.001) and 6-year cardiac mortality (2.9% vs.12.2% vs.23.8%,P 〈 0.001) were markedly increased in patients with RI.After adjusting for other confounding factors,classification of admission renal function was an independent predictor of inhospital mortality (Odd ratio,1.966; 95% confidence interval [CO,1.002-3.070,P =0.019),6-year all-cause mortality (relative risk [RR] =1.501,95% CI:1.018-4.373,P =0.039) and 6-year cardiac mortality (RR =1.663,95% CI:1.122-4.617,P =0.042).Conclusions:RI is very common in STEMI patients.RI evaluated by eGFR is an important independent predictor of short-term and long-term outcome in patients with acute STEMI.展开更多
Objective:Transoral scarless thyroid surgery has proven to be a popular alternative to traditional approaches.Transoral robotic thyroidectomy(TORT)has been reported using ports on the lower lip and axilla.Avoiding axi...Objective:Transoral scarless thyroid surgery has proven to be a popular alternative to traditional approaches.Transoral robotic thyroidectomy(TORT)has been reported using ports on the lower lip and axilla.Avoiding axillary incision can further reduce scars on the armpit.Here,we present our preliminary data from the initial 20 consecutive patients to explore the feasibility of three-port TORT without axillary incision.Methods:From September 2017 to June 2019,we performed TORT at Beijing United Family Hospital using three intraoral ports without axillary incision via the da Vinci Si system with three robotic arms.The outcomes of the procedure were retrospectively reviewed.Results:Among 20 patients(mean age 30±7 years;mean tumor size 1.64±0.96 cm),16 patients underwent unilateral thyroid lobectomy and four had total thyroidectomy with or without central neck dissection.Eighteen patients had papillary thyroid carcinomas(PTC),one had a follicular thyroid carcinoma,and one had a thyroid adenoma.The mean surgical time was 221±68 min.The mean number of retrieved central lymph nodes in the PTC patients was 5.6±5.There was no permanent vocal cord palsy or hypocalcemia postoperatively.One patient had transient vocal cord palsy,which resolved within 1 week.Paresthesia of the lower lip and the chin was observed in nine patients,and one patient had a first-degree burn of the skin flap due to the lens.Conclusion:Three-port TORT without axillary incision is feasible for selected patients and would be a potential alternative for remote-access thyroid surgery to avoid leaving scars on the neck or the armpit.展开更多
Objective Pial arteriovenous fistulas(PAVFs)are rare and mostly observed in children.However,the overall angioarchitecture,clinical features,treatments and long-term prognosis for pediatric patients remain unclear.Met...Objective Pial arteriovenous fistulas(PAVFs)are rare and mostly observed in children.However,the overall angioarchitecture,clinical features,treatments and long-term prognosis for pediatric patients remain unclear.Methods Clinical data of consecutive 42 pediatric PAVFs were documented and analysed.According to the differences of age distribution and clinical features,they were split into a younger group(≤3 years old;20 cases)and an older group(3-14 years old;22 cases).Results Their mean age was 4.9±3.9 years,and the mean preoperative modified Rankin Scale(mRS)score was 1.64±1.57.Fourteen patients(33.3%)were asymptomatic,followed by epilepsy(21.4%),intracranial haemorrhage(16.7%),hydrocephalus(9.5%),developmental delay(7.1%),intermittent headache(7.1%)and congestive heart failure(4.8%).Annual bleeding rate and rebleeding rate before treatment reached 3.86%and 3.17%.Poor venous drainage including sinus dynamic obstruction(21 cases,50.0%)and sinus occlusion(17 cases,40.48%)were found with high frequency among these patients.Finally,33 cases were cured(78.57%),and 4 cases faced surgery-related complications(9.52%).During 24-140 months’follow-up,the mean mRS score reduced to 0.57±0.40.However,only 22 cases(52.38%)recovered to absolutely normal,and poor venous drainage was the risk factor for patients’incomplete recovery(p=0.028,Exp(B)=14.692,95%CI 1.346 to 160.392).Compared with the older group,younger group showed more chronic symptoms,more secondary pathological changes,more times treatment and worse prognosis(p=0.013,0.002,0.000 and 0.032,respectively).Conclusions Pediatric PAVF has different angioarchitectures,clinical features and prognoses in different age groups.Poor venous drainage is an important factor leading to poor prognosis,and it accounts for incomplete recovery in nearly half of patients.展开更多
Background:Radical prostatectomy(RP)and radical cystectomy(RC)with concurrent pelvic lymph node dissection(PLND)are considered as the curative surgical treatment options for localized prostate cancer(PC)or muscle-inva...Background:Radical prostatectomy(RP)and radical cystectomy(RC)with concurrent pelvic lymph node dissection(PLND)are considered as the curative surgical treatment options for localized prostate cancer(PC)or muscle-invasive bladder cancer(BC).Regarding lymphatic leakage management after PLND,there is no standard of care,with different therapeutic approaches having been reported with varying success rates.Methods:Seventy patients underwent pelvic lymphadenectomy during robotic RP and RC with postoperative pelvic drainage volume more than 50 mL/day before the removal of drainage tube,were retrospectively evaluated in this study between August 2015 and June 2023.If the pelvic drainage volume on postoperative Day 2 was more than 50 mL/day,a drainage fluid creatinine was routinely tested to rule out urine leakage.We removed the drainage if the patient had no significant abdominal free fluid collection,no abdominal distension or pain,no fever,and no abdominal tenderness.After 1-day observation of the vital signs and abdominal symptoms,the patient was discharged and followed-up in clinic for 2 weeks after surgery.Results:Forty-one cases underwent the early drainage removal even if the pelvic drainage volume was more than 50mL/day.Among these forty-one cases,twenty-five drainage tubes were removed when drainage volume was more than 100 mL/day.All the forty-one cases with pelvic drainage volume greater than 50mL/day were successfully managed with the early drainage removal.No paracentesis or drainage placement was required.No readmission occured during the follow-up period.Conclusion:It is safe to manage the high-volume pelvic lymphatic leakage by early clamping of the drainage tube,ultrasonography assessment of no significant residual fluid in the abdominal and pelvic cavity,and then the early removal of the drainage tube.展开更多
Background Current prosthetic, small diameter vascular grafts showing poor long term patency rates have led to the pursuit of other biological materials. Biomaterials that successfully integrate into surrounding tissu...Background Current prosthetic, small diameter vascular grafts showing poor long term patency rates have led to the pursuit of other biological materials. Biomaterials that successfully integrate into surrounding tissue should match not only the mechanical properties of tissues, but also topography. Polyglycolic acid (70130) has been used as synthetic grafts to determine whether human vascular smooth muscle cells and endothelial cells attach, survive and secrete endothelin and 6-keto-prostaglandin F1α (6-keto-PGF1α). Methods Endothelial cells and smooth muscle cells were isolated from adult human great saphenous vein. They were seeded on polyglycolic acid scaffold in vitro separately to grew vascular patch (Groups A and B respectively) and cocultured in vitro to grow into vascular patch (Group C). Smooth muscle cells and endothelial cells were identified by immunohistochemical analysis and growth of cells on polyglycolic acid was investigated using scanning electron microscopy. The levels of endothelin and 6-keto-PGF1α in the culturing solutions were examined by radioimmunology to measure endothelial function. Results Seed smooth muscle cells adhered to polyglycolic acid scaffold and over 28 days grew in the interstices to form a uniform cell distribution throughout the scaffold. Then seed endothelial cells formed a complete endothelial layer on the smooth muscle cells. The levels of endothelin and 6-keto-prostaglandin F1 alpha in the culturing solution were (234±29) pg/ml and (428±98) pg/ml respectively in Group C and (196±30) pg/ml and (346±120) pg/ml in Group B; both significantly higher than in Groups A and D (blank control group, all P〈0.05 ). Conclusions Cells could be grown successfully on polyglycolic acid and retain functions of secretion. Our next step is to use human saphenous vein smooth muscle cells and endothelial cells to grow tubular vascular grafts in vitro.展开更多
Background:Delivery room resuscitation assists preterm infants,especially extremely preterm infants(EPI)and extremely low birth weight infants(ELBWI),in breathing support,while it potentially exerts a negative impact ...Background:Delivery room resuscitation assists preterm infants,especially extremely preterm infants(EPI)and extremely low birth weight infants(ELBWI),in breathing support,while it potentially exerts a negative impact on the lungs and outcomes of preterm infants.This study aimed to assess delivery room resuscitation and discharge outcomes of EPI and ELBWI in China.Methods:The clinical data of EPI(gestational age[GA]<28 weeks)and ELBWI(birth weight[BW]<1000 g),admitted within 72 h of birth in 33 neonatal intensive care units from five provinces and cities in North China between 2017 and 2018,were analyzed.The primary outcomes were delivery room resuscitation and risk factors for delivery room intubation(DRI).The secondary outcomes were survival rates,incidence of bronchopulmonary dysplasia(BPD),and risk factors for BPD.Results:A cohort of 952 preterm infants were enrolled.The incidence of DRI,chest compressions,and administration of epinephrine was 55.9%(532/952),12.5%(119/952),and 7.0%(67/952),respectively.Multivariate analysis revealed that the risk factors for DRI were GA<28 weeks(odds ratio[OR],3.147;95%confidence interval[CI],2.082–4.755),BW<1000 g(OR,2.240;95%CI,1.606–3.125),and antepartum infection(OR,1.429;95%CI,1.044–1.956).The survival rate was 65.9%(627/952)and was dependent on GA.The rate of BPD was 29.3%(181/627).Multivariate analysis showed that the risk factors for BPD were male(OR,1.603;95% CI,1.061–2.424),DRI(OR,2.094;95% CI,1.328–3.303),respiratory distress syndrome exposed to≥2 doses of pulmonary surfactants(PS;OR,2.700;95%CI,1.679–4.343),and mechanical ventilation≥7 days(OR,4.358;95% CI,2.777–6.837).However,a larger BW(OR,0.998;95% CI,0.996–0.999),antenatal steroid(OR,0.577;95%CI,0.379–0.880),and PS use in the delivery room(OR,0.273;95%CI,0.160–0.467)were preventive factors for BPD(all P<0.05).Conclusion:Improving delivery room resuscitation and management of respiratory complications are imperative during early management of the health of EPI and ELBWI.展开更多
Accidental exposure to the laser may result in visual impairment from retinal injury.Laser-induced damages to the macula include outer retinal disruption,foveal hemorrhage,macular edema,epiretinal membrane,full thickn...Accidental exposure to the laser may result in visual impairment from retinal injury.Laser-induced damages to the macula include outer retinal disruption,foveal hemorrhage,macular edema,epiretinal membrane,full thickness macular hole,etc.[1,2] There are some case reports of visual improvement following the use of oral corticosteroids,but till date,there is no known effective treatment for this condition.[3,4] We report a case series of laser-induced maculopathy treated with standard doses of oral corticosteroids.展开更多
文摘Objective:To correlate the utility of the Fundamentals of Laparoscopic Surgery(FLS)manual skills program with the Objective Structured Assessment of Technical Skills(OSATS)global rating scale in evaluating operative performance.Methods:The Asian Urological Surgery Training and Educational Group(AUSTEG)Laparoscopic Upper Tract Surgery Course implemented and validated the FLS program for its usage in laparoscopic surgical training.Delegates’basic laparoscopic skills were assessed using three different training models(peg transfer,precision cutting,and intra-corporeal suturing).They also performed live porcine laparoscopic surgery at the same workshop.Live surgery skills were assessed by blinded faculty using the OSATS rating scale.Results:From March 2016 to March 2019,a total of 81 certified urologists participated in the course,with a median of 5 years of post-residency experience.Although differences in task time did not reach statistical significance,those with more surgical experience were visibly faster at completing the peg transfer and intra-corporeal suturing FLS tasks.However,they took longer to complete the precision cutting task than participants with less experience.Overall OSATS scores correlated weakly with all three FLS tasks(peg transfer time:r=0.331,r^(2)=0.110;precision cutting time:r=0.240,r^(2)=0.058;suturing with intracorporeal knot time:r=0.451,r^(2)=0.203).Conclusion:FLS task parameters did not correlate strongly with OSATS globing rating scale performance.Although FLS task models demonstrated strong validity,it is important to assimilate the inconsistencies when benchmarking technical proficiency against real-life operative competence,as evaluated by FLS and OSATS,respectively.
文摘Objective:This study aimed to investigate the effectiveness and value of MRI and CT in the diagnosis of retroperitoneal tumours.Methods:60 patients with retroperitoneal tumours admitted to our hospital between July 2022 and March 2023 were selected as the study subjects.All of them received MRI and CT examinations.The detection of the two examination methods was compared and analyzed using the pathological findings as the standard.Results:The detection rate of MRI(58/60,96.67%)was significantly higher than that of CT(50/60,83.33%),and the difference was significant(P=0.015<0.05).Conclusion:Both MRI and CT have important application values in the diagnosis of retroperitoneal tumours.MRI has advantages in observing soft tissue structures,nerve tissues,etc.,and can provide more detailed anatomical structure information,which can help differentiate the retroperitoneal tumours and locate them accurately.CT,on the other hand,has unique advantages in observing the skeletal structure and the density of certain tumours,etc.It can quickly obtain comprehensive imaging information,which helps to determine the extent and invasion of the tumour.
文摘According to a meta-analysis, H pylori and non-steroidal anti-inflammatory drugs (NSAID) independently and significantly increase the risk of gastroduodenal ulcer and ulcer bleeding. Their coincidence is frequent, demonstration of a possible relationship and consequent attitude is of important implications. But unfortunately, no consensus has been approved in the past years and their interactions are still controversial. H pylori and NSAID are known to share a number of pathogenic mechanisms, but there is no evidence for the significant synergic action between these two risk factors. Their relationship is independent, additive, synergistic or antagonistic without considering the influence of other factors because studies on this subject are different in almost all aspects of their methodology, including the definition of a NSAID user as well as the types, doses, duration and their indications for NSAID use, as well as their end-points, definition of dyspepsia and regimes used for eradication of H pylori. These might contribute to the conflicting results and opinions. H pylori infection in humans does not act synergistically with NSAID on ulcer healing, and there is no need to eradicate it. This notion is supported by the finding that the eradication of H pylori does not affect NSAID induced gastropathy treated with omeprazole and that H pylori infection induces a strong cyclooxygenase-2 (COX-2) expression resulting in excessive biosynthesis of gastroprotective prostaglandin which in turn counteracts NSAID-induced gastropathy and heals the existing ulcer. Other investigators claimed that H pylori infection acts synergistically with NSAID on ulcer development, and H pylori should be eradicated, particularly at the start of long-term NSAID therapy. Eradication of H pylori prior to NSAID treatment does not appear to accelerate ulcer healing or to prevent recurrent ulcers in NSAID users. However, some recommendations can be drawn from the results of clinical trails.
文摘Objective To compare the similarities and differences of early CT manifestations of three types of viral pneumonia induced by SARS-CoV-2(COVID-19),SARS-CoV(SARS)and MERS-CoV(MERS)using a systemic review.Methods Electronic database were searched to identify all original articles and case reports presenting chest CT features for adult patients with COVID-19,SARS and MERS pneumonia respectively.Quality of literature and completeness of presented data were evaluated by consensus reached by three radiologists.Vote-counting method was employed to include cases of each group.Data of patients’manifestations in early chest CT including lesion patterns,distribution of lesions and specific imaging signs for the three groups were extracted and recorded.Data were compared and analyzed using SPSS 22.0.Results A total of 24 studies were included,composing of 10 studies of COVID-19,5 studies of MERS and 9 studies of SARS.The included CT exams were 147,40,and 122 respectively.For the early CT features of the 3 pneumonias,the basic lesion pattern with respect to"mixed ground glass opacity(GGO)and consolidation,GGO mainly,or consolidation mainly"was similar among the 3 groups(χ^2=7.966,P>0.05).There were no significant differences on the lesion distribution(χ^2=13.053,P>0.05)and predominate involvement of the subpleural area of bilateral lower lobes(χ^2=4.809,P>0.05)among the 3 groups.The lesions appeared more focal in COVID-19 pneumonia at early phase(χ^2=23.509,P<0.05).The proportions of crazy-paving pattern(χ^2=23.037,P<0.001),organizing pneumonia pattern(P<0.05)and pleural effusions(P<0.001)in COVID-19 pneumonia were significantly lower than the other two.Although rarely shown in the early CT findings of all three viral pneumonias,the fibrotic changes were more frequent in SARS than COVID-19 and MERS(χ^2=6.275,P<0.05).For other imaging signs,only the MERS pneumonia demonstrated tree-in-buds,cavitation,and its incidence rate of interlobular or intralobular septal thickening presented significantly increased as compared to the other two pneumonia(χ^2=22.412,P<0.05).No pneumothorax,pneumomediastinum and lymphadenopathy was present for each group.Conclusions Imaging findings on early stage of these three coronavirus pneumonias showed similar basic lesion patterns,including GGO and consolidation,bilateral distribution,and predominant involvement of the subpleural area and the lower lobes.Early signs of COVID-19 pneumonia showed less severity of inflammation.Early fibrotic changes appeared in SARS only.MERS had more severe inflammatory changes including cavitation and pleural effusion.The differences may indicate the specific pathophysiological processes for each coronavirus pneumonia.
文摘Ovarian cancer is one of the three most common gynecological cancers in the world,and is regarded as a priority in terms of women’s cancer.In the past few years,many researchers have attempted to develop and apply artificial intelligence(AI)techniques to multiple clinical scenarios of ovarian cancer,especially in the field of medical imaging.AI-assisted imaging studies have involved computer tomography(CT),ultrasonography(US),and magnetic resonance imaging(MRI).In this review,we perform a literature search on the published studies that using AI techniques in the medical care of ovarian cancer,and bring up the advances in terms of four clinical aspects,including medical diagnosis,pathological classification,targeted biopsy guidance,and prognosis prediction.Meanwhile,current status and existing issues of the researches on AI application in ovarian cancer are discussed.
文摘Objective We developed a universal lesion detector(ULDor)which showed good performance in in-lab experiments.The study aims to evaluate the performance and its ability to generalize in clinical setting via both external and internal validation.Methods The ULDor system consists of a convolutional neural network(CNN)trained on around 80 K lesion annotations from about 12 K CT studies in the DeepLesion dataset and 5 other public organ-specific datasets.During the validation process,the test sets include two parts:the external validation dataset which was comprised of 164 sets of non-contrasted chest and upper abdomen CT scans from a comprehensive hospital,and the internal validation dataset which was comprised of 187 sets of low-dose helical CT scans from the National Lung Screening Trial(NLST).We ran the model on the two test sets to output lesion detection.Three board-certified radiologists read the CT scans and verified the detection results of ULDor.We used positive predictive value(PPV)and sensitivity to evaluate the performance of the model in detecting space-occupying lesions at all extra-pulmonary organs visualized on CT images,including liver,kidney,pancreas,adrenal,spleen,esophagus,thyroid,lymph nodes,body wall,thoracic spine,etc.Results In the external validation,the lesion-level PPV and sensitivity of the model were 57.9%and 67.0%,respectively.On average,the model detected 2.1 findings per set,and among them,0.9 were false positives.ULDor worked well for detecting liver lesions,with a PPV of 78.9%and a sensitivity of 92.7%,followed by kidney,with a PPV of 70.0%and a sensitivity of 58.3%.In internal validation with NLST test set,ULDor obtained a PPV of 75.3%and a sensitivity of 52.0%despite the relatively high noise level of soft tissue on images.Conclusions The performance tests of ULDor with the external real-world data have shown its high effectiveness in multiple-purposed detection for lesions in certain organs.With further optimisation and iterative upgrades,ULDor may be well suited for extensive application to external data.
基金National Natural Science Foundation of China,No.81900641.
文摘BACKGROUND Acute myocardial infarction(AMI)during pregnancy is rare,especially in twin pregnancy,and it can endanger the lives of the mother and children.Except for conventional cardiovascular risk factors,pregnancy and assisted reproduction can increase the risk of AMI during pregnancy.AMI develops secondary to different etiologies,such as coronary spasm and spontaneous coronary artery dissection.CASE SUMMARY A 33-year-old woman,with twin pregnancy in the 31st week of gestation,presented to the hospital with intermittent chest tightness for 12 wk,aggravation for 1 wk,and chest pain for 4 h.Combined with the electrocardiogram and hypersensitive troponin results,she was diagnosed with acute ST-elevation myocardial infarction.Although the patient had no related medical history,she presented several risk factors,such as age greater than 30 years,assisted reproduction,and hyperlipidemia.After diagnosis,the patient received antiplatelet and anticoagulant treatment.Cesarean section and coronary angiography performed 7 d later showed stenosis and thrombus shadow of the right coronary artery.After receiving medication,the patient was in good condition.CONCLUSION This case suggests that,with the widespread use of assisted reproductive technology,more attention should be paid to perinatal healthcare,especially when chest pain occurs,to facilitate early diagnosis and intervention of AMI,and the etiology of AMI in pregnancy needs to be differentiated,especially between coronary spasm and spontaneous coronary artery dissection.
文摘Objective:This study aimed to describe the implementation of the surgical safety check policy and the surgical safety checklist for invasive procedures outside the operating room(OR)and evaluate its effectiveness.Methods:In 2017,to improve the safety of patients who underwent invasive procedures outside of the OR,the hospital quality and safety committee established the surgery safety check committee responsible for developing a new working plan,revise the surgery safety check policy,surgery safety check Keywords:Invasive procedures outside the operating room Safety management Surgical safety checklist Patient safety form,and provide training to the related staff,evaluated their competency,and implemented the updated surgical safety check policy and checklist.The study compared the data of pre-implementation(Apr to Sep 2017)and two post-implementation phases(Apr to Sep 2018,Apr to Sep 2019).It also evaluated the number of completed surgery safety checklist,correct signature,and correct timing of signature.Results:The results showed an increase in the completion rate of the safety checklist after the program implementation from 41.7%(521/1,249)to 90.4%(3,572/3,950),the correct rates of signature from 41.9%(218/521)to 99.0%(4,423/4,465),and the correct timing rates of signature from 34.4%(179/521)to 98.5%(4,401/4,465),with statistical significance(P<0.01).Conclusion:Implementing the updated surgery safety check significantly is a necessary and effective measure to ensure patient safety for those who underwent invasive procedures outside the OR.Implementing surgical safety checks roused up the clinical staff's compliance in performing safety checks,and enhanced team collaboration and communication.
文摘PRELUDE A handful of Qinghao(Artemisiae Annuae Herba)in 2 liters of water,immersed for more than an one thousand years,blossomed for you.One mission made up of thousands of experiments.Extracted the essence of ancient culture,yet deeply implanted in the contemporary world,helped mankind to survive a catastrophe.
文摘Background:Numerous previous studies have shown that renal insufficiency (RI) in patients with acute coronary syndrome is associated with poor cardiovascular outcomes.These studies do not well address the impact of RI on the long-term outcome of patients with acute ST-elevation myocardial infarction (STEMI) in China.The aim of this study was to investigate the association of admission RI and inhospital and long-term mortality of patients with acute STEMI.Methods:This was a multicenter,observational,prospective-cohort study.718 consecutive patients were admitted to 19 hospitals in Beijing within 24 hours of onset of STEMI,between January 1,2006 and December 31,2006.Estimation of glomerular filtration rate (eGFR) was calculated using the modified abbreviated modification of diet in renal disease equation-based on the Chinese chronic kidney disease patients.The patients were categorized according to eGFR,as normal renal dysfunction (eGFR ≥ 90 ml·min^-1·1.73 m^-2),mild RI (60 ml·min^-1· 1.73 m^-2 〈 eGFR 〈 90 ml·min^-1· 1.73 m^2) and moderate or severe RI (eGFR 〈 60 ml·min^-1· 1.73 m^2).The association between RI and inhospital and 6-year mortality of was evaluated.Results:Seven hundred and eighteen patients with STEMI were evaluated.There were 551 men and 167 women with a mean age of 61.0 &#177; 13.0 years.Two hundred and eighty patients (39.0%) had RI,in which 61 patients (8.5%) reached the level of moderate or severe RI.Patients with RI were more often female,elderly,hypertensive,and more patients had heart failure and stroke with higher killip class.Patients with RI were less likely to present with chest pain.The inhospital mortality (1.4% vs.5.9% vs.22.9%,P 〈 0.001),6-year all-cause mortality (9.5% vs.19.8 vs.45.2%,P 〈 0.001) and 6-year cardiac mortality (2.9% vs.12.2% vs.23.8%,P 〈 0.001) were markedly increased in patients with RI.After adjusting for other confounding factors,classification of admission renal function was an independent predictor of inhospital mortality (Odd ratio,1.966; 95% confidence interval [CO,1.002-3.070,P =0.019),6-year all-cause mortality (relative risk [RR] =1.501,95% CI:1.018-4.373,P =0.039) and 6-year cardiac mortality (RR =1.663,95% CI:1.122-4.617,P =0.042).Conclusions:RI is very common in STEMI patients.RI evaluated by eGFR is an important independent predictor of short-term and long-term outcome in patients with acute STEMI.
文摘Objective:Transoral scarless thyroid surgery has proven to be a popular alternative to traditional approaches.Transoral robotic thyroidectomy(TORT)has been reported using ports on the lower lip and axilla.Avoiding axillary incision can further reduce scars on the armpit.Here,we present our preliminary data from the initial 20 consecutive patients to explore the feasibility of three-port TORT without axillary incision.Methods:From September 2017 to June 2019,we performed TORT at Beijing United Family Hospital using three intraoral ports without axillary incision via the da Vinci Si system with three robotic arms.The outcomes of the procedure were retrospectively reviewed.Results:Among 20 patients(mean age 30±7 years;mean tumor size 1.64±0.96 cm),16 patients underwent unilateral thyroid lobectomy and four had total thyroidectomy with or without central neck dissection.Eighteen patients had papillary thyroid carcinomas(PTC),one had a follicular thyroid carcinoma,and one had a thyroid adenoma.The mean surgical time was 221±68 min.The mean number of retrieved central lymph nodes in the PTC patients was 5.6±5.There was no permanent vocal cord palsy or hypocalcemia postoperatively.One patient had transient vocal cord palsy,which resolved within 1 week.Paresthesia of the lower lip and the chin was observed in nine patients,and one patient had a first-degree burn of the skin flap due to the lens.Conclusion:Three-port TORT without axillary incision is feasible for selected patients and would be a potential alternative for remote-access thyroid surgery to avoid leaving scars on the neck or the armpit.
基金funded by Natural Science Foundation of Beijing(7222081)National Natural Science Foundation of China(82101369)Science Program for Fostering Young Scholars(QNPY2020009).
文摘Objective Pial arteriovenous fistulas(PAVFs)are rare and mostly observed in children.However,the overall angioarchitecture,clinical features,treatments and long-term prognosis for pediatric patients remain unclear.Methods Clinical data of consecutive 42 pediatric PAVFs were documented and analysed.According to the differences of age distribution and clinical features,they were split into a younger group(≤3 years old;20 cases)and an older group(3-14 years old;22 cases).Results Their mean age was 4.9±3.9 years,and the mean preoperative modified Rankin Scale(mRS)score was 1.64±1.57.Fourteen patients(33.3%)were asymptomatic,followed by epilepsy(21.4%),intracranial haemorrhage(16.7%),hydrocephalus(9.5%),developmental delay(7.1%),intermittent headache(7.1%)and congestive heart failure(4.8%).Annual bleeding rate and rebleeding rate before treatment reached 3.86%and 3.17%.Poor venous drainage including sinus dynamic obstruction(21 cases,50.0%)and sinus occlusion(17 cases,40.48%)were found with high frequency among these patients.Finally,33 cases were cured(78.57%),and 4 cases faced surgery-related complications(9.52%).During 24-140 months’follow-up,the mean mRS score reduced to 0.57±0.40.However,only 22 cases(52.38%)recovered to absolutely normal,and poor venous drainage was the risk factor for patients’incomplete recovery(p=0.028,Exp(B)=14.692,95%CI 1.346 to 160.392).Compared with the older group,younger group showed more chronic symptoms,more secondary pathological changes,more times treatment and worse prognosis(p=0.013,0.002,0.000 and 0.032,respectively).Conclusions Pediatric PAVF has different angioarchitectures,clinical features and prognoses in different age groups.Poor venous drainage is an important factor leading to poor prognosis,and it accounts for incomplete recovery in nearly half of patients.
文摘Background:Radical prostatectomy(RP)and radical cystectomy(RC)with concurrent pelvic lymph node dissection(PLND)are considered as the curative surgical treatment options for localized prostate cancer(PC)or muscle-invasive bladder cancer(BC).Regarding lymphatic leakage management after PLND,there is no standard of care,with different therapeutic approaches having been reported with varying success rates.Methods:Seventy patients underwent pelvic lymphadenectomy during robotic RP and RC with postoperative pelvic drainage volume more than 50 mL/day before the removal of drainage tube,were retrospectively evaluated in this study between August 2015 and June 2023.If the pelvic drainage volume on postoperative Day 2 was more than 50 mL/day,a drainage fluid creatinine was routinely tested to rule out urine leakage.We removed the drainage if the patient had no significant abdominal free fluid collection,no abdominal distension or pain,no fever,and no abdominal tenderness.After 1-day observation of the vital signs and abdominal symptoms,the patient was discharged and followed-up in clinic for 2 weeks after surgery.Results:Forty-one cases underwent the early drainage removal even if the pelvic drainage volume was more than 50mL/day.Among these forty-one cases,twenty-five drainage tubes were removed when drainage volume was more than 100 mL/day.All the forty-one cases with pelvic drainage volume greater than 50mL/day were successfully managed with the early drainage removal.No paracentesis or drainage placement was required.No readmission occured during the follow-up period.Conclusion:It is safe to manage the high-volume pelvic lymphatic leakage by early clamping of the drainage tube,ultrasonography assessment of no significant residual fluid in the abdominal and pelvic cavity,and then the early removal of the drainage tube.
基金a grant from the Capital Medical Development Scientific Research Fund(No.2002-306)
文摘Background Current prosthetic, small diameter vascular grafts showing poor long term patency rates have led to the pursuit of other biological materials. Biomaterials that successfully integrate into surrounding tissue should match not only the mechanical properties of tissues, but also topography. Polyglycolic acid (70130) has been used as synthetic grafts to determine whether human vascular smooth muscle cells and endothelial cells attach, survive and secrete endothelin and 6-keto-prostaglandin F1α (6-keto-PGF1α). Methods Endothelial cells and smooth muscle cells were isolated from adult human great saphenous vein. They were seeded on polyglycolic acid scaffold in vitro separately to grew vascular patch (Groups A and B respectively) and cocultured in vitro to grow into vascular patch (Group C). Smooth muscle cells and endothelial cells were identified by immunohistochemical analysis and growth of cells on polyglycolic acid was investigated using scanning electron microscopy. The levels of endothelin and 6-keto-PGF1α in the culturing solutions were examined by radioimmunology to measure endothelial function. Results Seed smooth muscle cells adhered to polyglycolic acid scaffold and over 28 days grew in the interstices to form a uniform cell distribution throughout the scaffold. Then seed endothelial cells formed a complete endothelial layer on the smooth muscle cells. The levels of endothelin and 6-keto-prostaglandin F1 alpha in the culturing solution were (234±29) pg/ml and (428±98) pg/ml respectively in Group C and (196±30) pg/ml and (346±120) pg/ml in Group B; both significantly higher than in Groups A and D (blank control group, all P〈0.05 ). Conclusions Cells could be grown successfully on polyglycolic acid and retain functions of secretion. Our next step is to use human saphenous vein smooth muscle cells and endothelial cells to grow tubular vascular grafts in vitro.
文摘Background:Delivery room resuscitation assists preterm infants,especially extremely preterm infants(EPI)and extremely low birth weight infants(ELBWI),in breathing support,while it potentially exerts a negative impact on the lungs and outcomes of preterm infants.This study aimed to assess delivery room resuscitation and discharge outcomes of EPI and ELBWI in China.Methods:The clinical data of EPI(gestational age[GA]<28 weeks)and ELBWI(birth weight[BW]<1000 g),admitted within 72 h of birth in 33 neonatal intensive care units from five provinces and cities in North China between 2017 and 2018,were analyzed.The primary outcomes were delivery room resuscitation and risk factors for delivery room intubation(DRI).The secondary outcomes were survival rates,incidence of bronchopulmonary dysplasia(BPD),and risk factors for BPD.Results:A cohort of 952 preterm infants were enrolled.The incidence of DRI,chest compressions,and administration of epinephrine was 55.9%(532/952),12.5%(119/952),and 7.0%(67/952),respectively.Multivariate analysis revealed that the risk factors for DRI were GA<28 weeks(odds ratio[OR],3.147;95%confidence interval[CI],2.082–4.755),BW<1000 g(OR,2.240;95%CI,1.606–3.125),and antepartum infection(OR,1.429;95%CI,1.044–1.956).The survival rate was 65.9%(627/952)and was dependent on GA.The rate of BPD was 29.3%(181/627).Multivariate analysis showed that the risk factors for BPD were male(OR,1.603;95% CI,1.061–2.424),DRI(OR,2.094;95% CI,1.328–3.303),respiratory distress syndrome exposed to≥2 doses of pulmonary surfactants(PS;OR,2.700;95%CI,1.679–4.343),and mechanical ventilation≥7 days(OR,4.358;95% CI,2.777–6.837).However,a larger BW(OR,0.998;95% CI,0.996–0.999),antenatal steroid(OR,0.577;95%CI,0.379–0.880),and PS use in the delivery room(OR,0.273;95%CI,0.160–0.467)were preventive factors for BPD(all P<0.05).Conclusion:Improving delivery room resuscitation and management of respiratory complications are imperative during early management of the health of EPI and ELBWI.
文摘Accidental exposure to the laser may result in visual impairment from retinal injury.Laser-induced damages to the macula include outer retinal disruption,foveal hemorrhage,macular edema,epiretinal membrane,full thickness macular hole,etc.[1,2] There are some case reports of visual improvement following the use of oral corticosteroids,but till date,there is no known effective treatment for this condition.[3,4] We report a case series of laser-induced maculopathy treated with standard doses of oral corticosteroids.