Cronkhite-Canada syndrome complicated with pulmonary embolism:A case report

BACKGROUND Cronkhite-Canada syndrome(CCS)is a rare disease,that causes gastrointestinal polyps,ectodermal abnormalities,and gastrointestinal symptoms.CCS is prone to thromboembolism,but clinical workers have not yet established a clinical consciousness of preventing thromboembolism.The present case illustrates pulmonary embolism(PE)complicated by CCS.CASE SUMMARY A 46-year-old male patient presented with mucus,purulent,and bloody stool.Ectodermal changes included skin pigmentation,alopecia,and nail dystrophy.Colonoscopy revealed the presence of multiple polyps.After a comprehensive evaluation,the patient was diagnosed with CCS.During the disease,he was also diagnosed with pulmonary embolism,Riehl's melanosis,and intestinal flora imbalance.After symptomatic treatment with omeprazole,mesalazine,rivaroxaban,nutritional support,and regulation of intestinal flora,the patient’s symptoms were significantly relieved.CONCLUSION CCS complicated with PE was reported for the first time in China in this study.Despite the fact that CCS is extremely rare,patients with CCS should be classified as a high-risk venous thromboembolism(VTE)population,and emphasis should be placed on venous thromboembolism risk assessment and stratification,deep venous thromboembolism screening,prevention of VTE,and careful long-term follow-up.

Research progress on the clinical diagnosis and treatment of COPD with pulmonary embolism

Chronic obstructive pulmonary disease(COPD)is one of the most common and important diseases leading to the death of elderly patients in the world at present.It is characterized by continuous airflow restriction and irreversible chronic airway obstruction,which can easily lead to a variety of complications and accompanying symptoms,greatly affecting the quality of life of individuals and increasing the economic burden of families and society.Pulmonary embolism(PE)is one of the complications of COPD,which can lead to pulmonary blood circulation and respiratory failure,with a high risk of death.However,because its clinical symptoms overlap with the symptoms of acute exacerbation of COPD and lack of specific clinical manifestations and laboratory tests,it is easy to be misdiagnosed and ignored,thus delaying the treatment of patients and affecting the prognosis.This article will elaborate on the clinical diagnosis and treatment of chronic obstructive pulmonary disease combined with pulmonary embolism,providing certain value for early identification of COPD combined with PE patients and the severity of the condition.

Pulmonary embolism after shoulder surgery:Is it a real threat?

Pulmonary embolism(PE)is a rare but devastating complication of shoulder surgery.Apart from increased morbidity and mortality rates,it may significantly impair postoperative recovery and functional outcome.Its frequency accounts for up to 5.7%of all shoulder surgery procedures with a higher occurrence in women and patients older than 70 years.It is most commonly associated with thrombophilia,diabetes mellitus,obesity,smoking,hypertension,and a history of malignancy.PE usually occurs secondary to upper or lower-extremity deep vein thrombosis(DVT).However,in rare cases,the source of the thrombi cannot be determined.Prophylaxis for PE following shoulder surgery remains a topic of debate,and the standard of care does not routinely require prophylactic medication for DVT prophylaxis.Early ambulation and elastic stockings are important preventative measures for DVT of the lower extremity and medical agents such as aspirin,low-molecular-weight heparin,and vitamin K antagonists are indicated for high-risk patients,long-lasting operations,or concomitant severe acute respiratory syndrome coronavirus 2 infection.The most common symptoms of PE include chest pain and shortness of breath,but PE can also be asymptomatic in patients with intrinsic tolerance of hypoxia.Patients with DVT may also present with swelling and pain of the respective extremity.The treatment of PE includes inpatient or outpatient anticoagulant therapy if the patient is hemodynamically unstable or stable,respectively.Hemodynamic instability may require transfer to the intensive care unit,and cardiovascular arrest can be implicated in fatal events.An important issue for patients with PE in the postoperative period after shoulder surgery is residual stiffness due to a delay in rehabilitation and a prolonged hospital stay.Early physiotherapy and range-of-motion exercises do not adversely affect the prognosis of PE and are highly recommended to preserve shoulder mobility and function.

The Value of MLPR,NLR,and RDW in the Assessment of Combined Pulmonary Embolism in Elderly Patients with AECOPD

Objective:To investigate the diagnostic value of the monocyte-to-large-platelet ratio(MLPR),neutrophil-to-lymphocyte ratio(NLR),and red blood cell distribution width(RDW)for pulmonary embolism(PE)in patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD).Methods:A total of 60 elderly AECOPD patients were enrolled and divided into embolus group(12 cases)and thrombus group(48 cases)according to whether they were combined with pulmonary embolism and the MLPR,NLR,and RDW values of the two groups were determined respectively.Results:The patients in the two groups had different degrees of vascular structural and functional abnormalities,and the MLPR,NLR,and RDW in the embolus group were significantly higher than those in the thrombus group(P<0.05);while the differences in NLR and RDW between the two groups were not significant.Conclusion:MLPR,NLR,and RDW can provide an objective basis for assessing PE in elderly AECOPD patients.

Anticoagulation therapy for pulmonary embolism involving a myxoma mimicking, giant type C thrombus: A case report

Right heart thrombus(RHTh) with concurrent acute pulmonary embolism(PE) is rare and can seriously destabilize hemodynamics, leading to an emergency situation with high mortality. Diagnosis and treatment of RHTh with acute PE are not yet standardized. There are few reports of acute PE concurrent with RHTh and even less is known about patients with a right heart mural thrombus. For physicians, the diagnostic choice and treatment of these patients are particularly difficult due to the lack of knowledge. Here, we report a rare case of partial mural RHTh(type C RHTh) with acute PE. The mural mass in the right heart was initially diagnosed as atrial myxoma according to transthoracic echocardiography(TTE), and both pulmonary embolus and the mural mass were completely absorbed after administering Rivaroxiban. This case suggests that TTE alone is insufficient to identify and diagnoses a right heart mural mass such as this. However, novel oral anticoagulants may be effective at alleviating PE with type C RHTh.

Massive pulmonary embolism in Klippel-Trenaunay syndrome after leg raising:A case report

BACKGROUND Klippel-Trenaunay syndrome(KTS)is a rare congenital disorder characterized by a combination of capillary malformations,soft-tissue or bone hypertrophy,and varicose veins or venous malformations.The syndrome predisposes patients to hypercoagulable states,including venous thromboembolism and pulmonary embolism(PE).CASE SUMMARY A 12-year-old girl with KTS was scheduled excision of verrucous hyperkeratosis in the left foot and posterior aspect of the left leg and left thigh and excision of a cutaneous hemangioma in the right buttock.After induction,the surgeon elevated the patient’s leg for sterilization,whereupon she experienced a massive PE and refractory cardiac arrest.Extracorporeal membrane oxygenation(ECMO)was performed after prolonged resuscitation,and she had a return of spontaneous circulation.After this episode,the patient was discharged without any neurologic complications.CONCLUSION The mechanism of PE,a lethal disease,involves a preexisting deep vein thrombosis that is mechanically dislodged by compression or changing positions and travels to the pulmonary artery.Therefore,patients predisposed to PE should be prescribed prophylactic anticoagulants.If the patient has unstable vital signs,resuscitation should be started immediately,and extracorporeal cardiopulmonary resuscitation should be considered in settings with existing ECMO protocols,expertise,and equipment.Awareness of PE in patients with KTS while leg raising for sterilization is critical.

CT肺动脉血管造影联合血清Apelin-13、IL-38在急性肺栓塞诊断中的临床价值

目的探究CT肺动脉血管造影(CTPA)联合血清Apelin-13、白细胞介素-38(IL-38)在急性肺栓塞(APE)诊断中的临床价值。方法选取2021年5月-2023年5月本院收治的116例疑似APE患者,患者均行CTPA,根据其检测结果分为APE组和非APE组;酶联免疫吸附法检测Apelin-13、IL-38水平;APE的影响因素采用多因素Logistic回归分析;绘制ROC曲线分析血清Apelin-13、IL-38对APE的诊断价值。结果116例患者经过CTPA诊断出APE 49例(42.24%),主要包括23例中心型,82例偏心型,15例附壁血栓型,19例完全堵塞型。APE组血清Apelin-13、IL-38水平显著高于非APE组(P<0.05)。多因素Logistic回归分析得知Apelin-13、IL-38为影响APE的危险因素(P<0.05)。根据ROC曲线得知,血清Apelin-13诊断APE的AUC为0.859,血清IL-38诊断APE的AUC为0.864,二者联合诊断APE的AUC为0.952,二者联合优于各自单独诊断(Z_(联合vs Apelin-13)=2.681、Z_(联合vs IL-38)=2.739,P均<0.05)。结论Apelin-13、IL-38在APE患者血清中明显升高,CTPA可显示APE的部位和类型,CTPA联合血清Apelin-13、IL-38可提高APE的诊断价值。

心电图联合PESI评分在急性肺栓塞病情分层及预后预测中的价值

目的探讨心电图联合肺栓塞严重程度指数(PESI)评分在急性肺栓塞(APE)患者病情分层及预后预测中价值。方法选取2020年1月至2023年5月医院收治的APE者122例为APE组,同期在体检中心匹配136例健康体检者为对照组,对比两组心电图特征,分析不同病情患者的心电图评分、PESI评分。APE患者接受常规治疗30 d,对比不同预后患者心电图评分、PESI评分,分析心电图联合PESI评分对预后预测价值。结果APE组S_(Ⅰ)Q_(Ⅲ)T_(Ⅲ)、V_(1)导联T波倒置、V_(2)导联T波倒置、V_(1)、V_(2)导联ST段抬高<0.1 mV、心房颤动、顺钟转位发生率高于对照组(P<0.05)。重度患者心电图评分、PESI评分高于中度与轻度患者,中度患者心电图评分、PESI评分高于轻度患者(P<0.05)。经Pearson分析,心电图评分、PESI评分与病情程度呈正相关(P<0.05)。受试者工作特征(ROC)曲线图显示,心电图评分、PESI评分联合应用对APE患者预后预测价值的曲线下面积(AUC)为0.803,高于单一指标的预测价值(P<0.05)。高水平心电图评分、PESI评分的APE患者发生预后不良的危险度为低水平的3.351倍、4.919倍(P<0.05)。结论心电图与PESI评分联合应用可有效预测APE患者预后状况,动态监测心电图、PESI评分变化,可为临床病情评估提供依据,便于临床制定针对性治疗方案。

NLR、PLR和sPESI评分对急性肺栓塞患者30天死亡的预测价值

目的探讨中性粒细胞与淋巴细胞比值(neutrophil to lymphocyte ratio,NLR)、血小板与淋巴细胞比值(platelet to lymphocyte ratio,PLR)和简化版肺栓塞指数(simplified pulmonary embolism severity index,sPESI)评分对急性肺栓塞(acute pulmonary embolism,APE)患者30天死亡的预测价值。方法回顾分析2017年1月~2021年12月首都医科大学宣武医院住院的291例APE患者的临床资料,收集入院时白细胞计数(white blood cell,WBC)、NLR、PLR、sPESI评分等指标。病例随访或电话随访其30天内死亡情况,根据预后分成死亡组和存活组,比较两组患者上述指标的区别。应用多因素Logistic回归分析APE患者30天死亡的独立危险因素,比较NLR、PLR及联合sPESI评分对死亡预测的受试者工作特征(receiver operating characteristic,ROC)曲线下面积的区别。结果APE患者30天内死亡11例(3.78%),生存280例(96.22%)。死亡组患者WBC、NLR、PLR和sPESI评分大于存活组(P<0.05);多因素Logistic回归分析显示,PLR、NLR和sPESI评分为APE患者30天死亡的独立危险因素(P<0.05)。PLR预测APE患者30天死亡的ROC曲线下面积(area under ROC curve,AUC)为0.799(P=0.001),NLR的AUC为0.827(P=0.001),sPESI评分的AUC为0.874(P=0.001),PLR、NLR与sPESI评分预测死亡的AUC比较,差异无统计学意义(P=0.181,0.340);NLR联合sPESI评分的AUC为0.925(P=0.001),大于NLR的AUC(P=0.004)。PLR联合sPESI评分的AUC为0.901(P=0.001),大于PLR的AUC(P=0.002)。结论NLR、PLR和sPESI评分是APE患者30天死亡的独立危险因素,均对预后具有一定的评估价值。PLR、NLR分别联合sPESI评分对预后的评估价值大于单独应用PLR和NLR。

Peripheral primitive neuroectodermal tumor of the kidney presenting with pulmonary tumor embolism: A case report

Peripheral primitive neuroectodermal tumor(PNET) of the kidney is a rare, aggressive tumor known for its recurrence and metastatic potential. Despite the frequency of venous extension to the renal veins and inferior vena cava, pulmonary tumor embolism at the initial presentation is not common. We report a case of 22-year-old female with PNET of the kidney who presented with tumor embolism in the inferior vena cava(IVC) and bilateral pulmonary artery. The patient underwent surgical resection and histopathological analysis confirmed the presence of tumor within the IVC and pulmonary arteries. The patient received adjuvant chemotherapy and is currently doing well on follow-up.

Clinical probability and risk analysis of patients with suspected pulmonary embolism

BACKGROUND: Pulmonary embolism(PE) is one of the most frequent diseases that could be missed in overcrowded emergency departments as in Turkey. Early and accurate diagnosis could decrease the mortality rate and this standard algorithm should be defi ned. This study is to fi nd the accurate, fast, non-invasive, cost-effective, easy-to-access diagnostic tests, clinical scoring systems and the patients who should be tested for clinical diagnosis of PE in emergency department.METHODS: One hundred and forty patients admitted to the emergency department with the fi nal diagnosis of PE regarding to anamnesis, physical examination and risk factors, were included in this prospective, cross-sectional study. The patients with a diagnosis of pulmonary embolism, acute coronary syndrome or infection and chronic obstructive pulmonary disease(COPD) were excluded from the study. The demographics, risk factors, radiological fi ndings, vital signs, symptoms, physicallaboratory fi ndings, diagnostic tests and clinical scoring systems of patients(Wells and Geneva) were noted. The diagnostic criteria for pulmonary emboli were: fi lling defect in the pulmonary artery lumen on spiral computed tomographic angiography and perfusion defect on perfusion scintigraphy.RESULTS: Totally, 90(64%) of the patients had PE. Age, hypotension, having deep vein thrombosis were the risk factors, and oxygen saturation, shock index, BNP, troponin and fi brinogen levels as for the biochemical parameters were signifi cantly different between the PE(+) and PE(–) groups(P<0.05).The Wells scoring system was more successful than the other scoring systems.CONCLUSION: Biochemical parameters, clinical findings, and scoring systems, when used altogether, can contribute to the diagnosis of PE.

Evaluation of computed tomography obstruction index in guiding therapeutic decisions and monitoring percutanous catheter fragmentation in massive pulmonary embolism

In the present study, we evaluated computed tomography pulmonary angiography （CTPA） in guiding therapeutic decisions and monitoring patients undergoing percutaneous catheter fragmentation in acute massive pulmonary embolism. From Jan 2003 to Dec 2009, 35 patients were diagnosed with acute massive pulmonary embolism by CTPA （TO） and treated with percutaneous catheter fragmentation. The severity was assessed by CT obstruction index （Qanadli index） and compared with Miller index. CTPA, oxygen saturation （SaO2） and pulmonary artery pressure were performed as follow-up index. The mean percentage of Qanadli index was （55 ± 13）% （range, 40%- 75%）, and Miller index was （62 ± 15）% （range, 45%-85%）. Correlations between them were statistically significant （r = 0.867, P 〈 0.0001）. The Qanadli index showed significant reduction [TO： （55±13）%; TI： （12±10）%; P 〈 0.001] in 33 patients. Significant correlation was observed between the Qanadli index, SaO2 （r = 0.934）, and pulmonary artery pressure （r = 0.813）. The Qanadli index provides an accurate method for distinguishing massive pulmonary embolism from sub-massive pulmonary embolism. It can be used to determine therapeutic options and monitor clinical outcomes.

Saddle pulmonary embolism is not a sign of high-risk deterioration in non-high-risk patients: A propensity score-matched study

BACKGROUND: There is controversy regarding whether saddle main pulmonary artery(MPA) embolism represents a high risk of deterioration in non-high-risk acute pulmonary embolism(PE) patients. This study aims to address this issue by conducting a propensity score matching(PSM) study.METHODS: A total of 727 non-high-risk acute PE patients were retrospectively evaluated. We evaluated the Bova score and risk stratification to examine the risk of deterioration. Deterioration defined as any adverse event within 30 days after admission. Computed tomographic pulmonary angiography was used to identify the embolism type. All patients were matched into four subgroups by PSM according to age, sex, Bova score, and risk stratification:(1) MPA and non-MPA embolism;(2) non-saddle MPA and non-MPA embolism;(3) saddle MPA and non-saddle MPA embolism;(4) saddle MPA and non-MPA embolism. Correlations were analyzed using Cox regression analysis, and deterioration risk was compared between subgroups using Kaplan-Meier analysis.RESULTS: Cox regression analysis revealed that MPA embolism was correlated with deterioration, regardless of whether saddle MPA embolism was included or excluded. Saddle MPA embolism was not correlated with deterioration, regardless of comparison with non-saddle MPA embolism or non-MPA embolism. Patients with MPA and non-saddle MPA embolism presented a high risk for deterioration(logrank test=5.23 and 4.70, P=0.022 and 0.030, respetively), while patients with saddle MPA embolism were not at a high risk of deterioration(log-rank test=1.20 and 3.17, P=0.729 and 0.077, respetively).CONCLUSIONS: Saddle MPA embolism is not indicative of a high risk of deterioration in nonhigh-risk acute PE patients.

Could the number of CT angiograms be reduced in emergency department patients suspected of pulmonary embolism?

This study was undertaken to identify the prevalence of pulmonary embolism （PE） in the emergency department （ED） of an urban teaching hospital and also to test a Bayesian model in estimating the number of CT pulmonary angiography （CTA） expected to be performed in an emergency department. The data for this study was obtained through a retrospective review of electronic medical records for all ED patients suspected of PE who underwent chest CTA or ventilation perfusion scanning （V/Q） between 2009 and 2010. The data is presented as means and standard deviation for continuous variables and percentages with 95% confidence intervals （95%CI） for proportions. The prevalence of PE was used as pre-test probability in the Bayesian model. Post-test probability was obtained using a Fagan nomogram and likelihood ratios for CTA. A total of 778 patients （560 females） with mean age of 50 years （range 18-98 years） were enrolled （98.3% underwent chest CTA and 1.7% underwent V/Q scan）. A total of 69 patients had PE, rendering an overall prevalence of 8.9% （95%CI, 7.1% to 11.1%） for PE. We calculated that 132 CTA＇s per year could be avoided in our institution, without compromising safe exclusions of PE （keeping post-test probability of PE below 2%）. Despite differences in our patient populations and/or study designs, the prevalence of PE in our institution is about average compared to other institutions. Our proposed model for calculating redundant chest CTA is simple and can be used by institutions to identify overuse of CTA.

Evolving paradigm of thrombolysis in pulmonary embolism:Comprehensive review of clinical manifestations,indications,recent advances and guideline

Thrombolytic therapy has been the mainstay for patients with pulmonary embolism(PE).Despite being linked to a higher risk of significant bleeding,clinical trials demonstrate that thrombolytic therapy should be used in patients with moderate to high-risk PE,in addition to hemodynamic instability symptoms.This prevents the progression of right heart failure and impending hemodynamic collapse.Diagnosing PE can be challenging due to the variety of presentations;therefore,guidelines and scoring systems have been established to guide physicians to correctly identify and manage the condition.Traditionally,systemic thrombolysis has been utilized to lyse the emboli in PE.However,newer techniques for thrombolysis have been developed,such as endovascular ultrasound-assisted catheter-directed thrombolysis for massive and intermediatehigh submassive risk groups.Additional newer techniques explored are the use of extracorporeal membrane oxygenation,direct aspiration,or fragmentation with aspiration.Because of the constantly changing therapeutic options and the scarcity of randomized controlled trials,choosing the best course of treatment for a given patient may be difficult.To help,the Pulmonary Embolism Reaction Team is a multidisciplinary,rapid response team that has been developed and is used at many institutions.Hence to bridge the knowledge gap,our review highlights various indications of thrombolysis in addition to the recent advances and management guidelines.

Role of Pulmonary Embolism Response Team in patients with intermediate-and high-risk pulmonary embolism:a concise review and preliminary experience from China

Intermediate-and high-risk pulmonary embolism(PE)is a life-threatening medical emergency with high morbidity and mortality.Many of the treatment options for PE involve clinicians from multiple disciplines.Pulmonary Embolism Response Teams(PERTs)have been developed to coordinate the multidisciplinary team of clinicians to streamline the decision making process and develop individualised treatment plans in a timely fashion.The first PERT was established in 2012 and subsequently multiple centres worldwide have introduced this model for the management of intermediate-and high-risk PE.In this review,we evaluate the organisational structure and algorithms of different PERT services and compare data from pre-and post-PERT services to determine the impact of PERT on outcomes.We consider the cost and time implications of this multidisciplinary 24-hour service and suggest areas for further research and review.

Choriocarcinoma-associated pulmonary thromboembolism and pulmonary hypertension： a case report

Cases of pulmonary embolism and pulmonary artery hypertension caused by choriocarcinoma represent a rare clinical emergency. We report a case of a 25-year-old woman who presented with pulmonary embolism and hyper- tension and died soon after complete pulmonary embolectomy. A related literature review revealed that almost all of these patients had previously experienced a spontaneous abortion （average, 6 months） and were not pregnant.

Perioperative Management of Case of Gynecological Malignancy with Bilateral Deep Venous Thrombosis of Lower Limbs Along with Pulmonary Embolism

We describe the anaesthetic management of 45 year female patient with pre-existing deep venous thrombosis (DVT) and pulmonary embolism (PE) who was subsequently scheduled for an laparotomy. Before planning the surgical procedures, adequate anticoagulation must be achieved to prevent further complications of DVT, thromboembolism, and pulmonary embolism in particular. The risk of stopping the anticoagulation prior to surgery must be considered and adequately discussed with the patient and surgeons. The anaesthetic plan must be selected keeping in mind the coagulation status and the need of anticoagulation in the postoperative period.

A fast-track diagnostic and therapeutic strategy for acute pulmonary embolism patients at peri-operational period

Acute pulmonary embolism(APE) in operation room is a constant,lethal but treatable disease.A fast determination of APE in an operation room is currently difficult due to a non-specificity on its signs,symptoms,electrocardiograph findings,arterial blood gas abnormalities and chest X-rays.Clinically,an APE can automatically originate from a small and clinically asymptomatic embolus to massive,proximal emboli with shock during a scheduled surgery period.An accurate,brief and prompt diagnostic and therapeutic strategy for APE in a peri-operation period is crucial for anesthesiologists to make a decision on an appropriate clinical intervention to improve patients' outcomes.The purpose of this mini-review article is to illuminate a fast-track diagnostic and therapeutic strategy for APE patients in a perioperative period through a hybrid of the high sensitive and high specific viable diagnostic modality of D-dimer assay in conjunction with necessary emergent pulmonary angiography(EPA),including digital subtraction angiography(DSA),or a spiral computed tomography angiography(sCTA) for APE patients' diagnosis and treatment during operation.The postulated fast-track diagnostic and therapeutic strategy can effectively confirm or exclude highly suspected APE and simultaneously provide fast therapeutic opportunities for APE patients at an operative period.

Cardiac arrest secondary to pulmonary embolism treated with extracorporeal cardiopulmonary resuscitation:Six case reports

BACKGROUND Massive pulmonary embolism(PE)results in extremely high mortality rates.Veno-arterial extracorporeal membrane oxygenation(VA-ECMO)can provide circulatory and oxygenation support and rescue patients with massive PE.However,there are relatively few studies of extracorporeal cardiopulmonary resuscitation(ECPR)in patients with cardiac arrest(CA)secondary to PE.The aim of the present study is to investigate the clinical use of ECPR in conjunction with heparin anticoagulation in patients with CA secondary to PE.CASE SUMMARY We report the cases of six patients with CA secondary to PE treated with ECPR in the intensive care unit of our hospital between June 2020 and June 2022.All six patients experienced witnessed CA whilst in hospital.They had acute onset of severe respiratory distress,hypoxia,and shock rapidly followed by CA and were immediately given cardiopulmonary resuscitation and adjunctive VA-ECMO therapy.During hospitalization,pulmonary artery computed tomography angiography was performed to confirm the diagnosis of PE.Through anticoagulation management,mechanical ventilation,fluid management,and antibiotic treatment,five patients were successfully weaned from ECMO(83.33%),four patients survived for 30 d after discharge(66.67%),and two patients had good neurological outcomes(33.33%).CONCLUSION For patients with CA secondary to massive PE,ECPR in conjunction with heparin anticoagulation may improve outcomes.