Exploring the Feasibility of Machine Learning to Predict Risk Stratification Within 3 Months in Chest Pain Patients with Suspected NSTE-ACS

Objective We aimed to assess the feasibility and superiority of machine learning(ML)methods to predict the risk of Major Adverse Cardiovascular Events(MACEs)in chest pain patients with NSTE-ACS.Methods Enrolled chest pain patients were from two centers,Beijing Anzhen Emergency Chest Pain Center Beijing Bo’ai Hospital,China Rehabilitation Research Center.Five classifiers were used to develop ML models.Accuracy,Precision,Recall,F-Measure and AUC were used to assess the model performance and prediction effect compared with HEART risk scoring system.Ultimately,ML model constructed by Naïve Bayes was employed to predict the occurrence of MACEs.Results According to learning metrics,ML models constructed by different classifiers were superior over HEART(History,ECG,Age,Risk factors,&Troponin)scoring system when predicting acute myocardial infarction(AMI)and all-cause death.However,according to ROC curves and AUC,ML model constructed by different classifiers performed better than HEART scoring system only in prediction for AMI.Among the five ML algorithms,Linear support vector machine(SVC),Naïve Bayes and Logistic regression classifiers stood out with all Accuracy,Precision,Recall and F-Measure from 0.8 to 1.0 for predicting any event,AMI,revascularization and all-cause death(vs.HEART≤0.78),with AUC from 0.88 to 0.98 for predicting any event,AMI and revascularization(vs.HEART≤0.85).ML model developed by Naïve Bayes predicted that suspected acute coronary syndrome(ACS),abnormal electrocardiogram(ECG),elevated hs-cTn I,sex and smoking were risk factors of MACEs.Conclusion Compared with HEART risk scoring system,the superiority of ML method was demonstrated when employing Linear SVC classifier,Naïve Bayes and Logistic.ML method could be a promising method to predict MACEs in chest pain patients with NSTE-ACS.

Role of lumbar puncture in clinical outcome of suspected acute bacterial meningitis

BACKGROUND Meningitis remains a significant source of mortality and morbidity,with an incidence of 1 per 100000 persons in the United States.Guidelines recommend obtaining blood cultures and cerebrospinal fluid(CSF)studies in patients presenting with acute meningitis syndrome,and beginning treatment with broad spectrum antibiotics based on the age and certain predisposing conditions.In some patients however,the diagnostic lumbar puncture(LP)is not performed due to a multitude of reasons,ranging from increased intracranial pressure to failed attempt.In such situations,appropriate therapy is initiated empirically and often continued without establishment of a definitive diagnosis.AIM To determine whether a diagnostic LP in acute meningitis syndrome was associated with a better outcome and less duration of antibiotic therapy,along with potential causes for deferral of procedure.METHODS A retrospective study was conducted amongst the patients presenting to a 360 bedded community hospital in central Massachusetts with a diagnosis of acute meningitis syndrome between January 2010-September 2022.The electronic health records were accessed to collect necessary demographic and clinical data,including etiology of meningitis,lumbar puncture results,reason for procedure deferral,duration of antibiotic therapy and clinical outcome.The patients were subsequently divided into two groups based on whether they received a LP or not,and data was analyzed.RESULTS A total of 169 patients admitted with acute meningitis syndrome between September 2010-2022 were included in the study.The mean age of the participants was 54.3 years(SD+/-19.2 years).LP was performed for 130(76.9%)participants,out of which,28(21.5%)showed some growth in CSF culture.The most commonly identified organism was streptococcus pneumoniae.Amongst the 39 patients in whom LP was deferred,the major reasons recorded were:Body habitus(n=6,15.4%),and unsuccessful attempt(n=4,10.3%).While 93(71.5%)patients with LP received antibiotic therapy,only 19(48.7%)patients without LP received the antibiotics,with the principal reason being spontaneous improvement in sensorium without any diagnosed source of infection.The mean duration of antibiotic use was 12.3 days(SD+/-5.6)in the LP group and 11.5 days(SD+/-7.0)in the non-LP group(P=0.56;statistically not significant).We observed higher long term sequalae in the non-LP group(n=6,15.4%)compared to the LP group(n=9,6.9%).Similarly,the death rate was higher in the non-LP group(n=7,18.0%)compared to the LP group(n=9,6.9%).CONCLUSION LP remains the cornerstone for diagnosing meningitis,but often CSF results are unavailable,leading to empiric treatment.Our study identified that body habitus and unsuccessful attempts were the most common reasons for LP not being performed,leading to empiric antibiotic coverage.There was no difference between the duration of antibiotics received by the two groups,but a lower proportion of patients without LP received antibiotics,attributed to a spontaneous improvement in sensorium.However,the residual neurological sequelae and death rates were higher in patients without LP,signifying a potential under-treatment.A LP remains crucial to diagnose meningitis,and a lack of CSF analysis predisposes to under-treatment,leading to higher neurological sequelae and increased chances of death.

Anterior segment changes after pharmacologic mydriasis using Pentacam and optical coherence tomography in angle closure suspects

AIM: To compare the dynamic changes of anterior segment parameters especially iris morphology induced by pharmacologic mydriasis between angle closure suspects and normal controls. METHODS: The study group comprised 19 eyes of 19 angle closure suspects and 19 eyes of 19 age- and sexmatched normal open-angle eyes. Pentacam and optical coherence tomography measurements before and 30min after instillation of compound tropicamide eye drop were performed and compared. Biometric evaluations of iris tomography and anterior chamber angle were estimated by a customized image-processing software. RESULTS: Baseline axial length, iris cross sectional area and volume did not differ significantly between angle closure suspects and normal controls. Angle closure suspects had smaller pupil size, narrower anterior segment dimension and axial length, thinner iris with greater curve in comparison with normal controls. Pharmacologic mydriasis led to significant increments in iris thickness at 750 mu m, anterior chamber depth and volume, whereas significant decrements in iris curve, cross sectional area and volume in both groups. Angle opening distance at 500 mu M was increased significantly in normal controls (from 0.465 +/- 0.115 mm to 0.539 +/- 0.167 mm, P=0.009), but not in angle closure suspects (from 0.125 0.100 mm to 0.145 +/- 0.131 mm, P=0.326). Iris volume change per millimeter of pupil dilation (Delta IV/Delta PD) decreased significantly less in angle closure suspects than normal controls (-2.47 +/- 1.33 mm(2) vs -3.63 +/- 1.58 mm(2), P=0.019). Linear regression analysis showed that the change of angle opening distance at 500 mu M was associated most with the change of central anterior chamber depth (beta= 0.841, P=0.002) and Delta IV/Delta PD (beta=0.028, P=0.002), followed by gender (beta=0. 062, P=0.032). CONCLUSION: Smaller iris volume decrement per millimeter of pupil dilation is related significantly with the less anterior angle opening in angle closure suspects after pharmacologic mydriasis. Dynamic iris change may be as a prospective indicator of iris compressibility and angle closure glaucoma.

Primary stratification and identification of suspected corona virus disease 2019(COVID-19) from clinical perspective by a simple scoring proposal

In this Commentary,we would like to comment on the article titled"A rapid advice guideline for the diagnosis and treatment of 2019 novel coronavirus(2019-nCoV)infected pneumonia(standard version)"as a featured article in Military Medical Research.In the guideline,except for"confirmed cases","suspected cases","close contact"and"suspicious exposure"were defined by clinical perspective based on epidemiological risk,clinical symptoms and auxiliary examination.Combined with our experience,we introduced a simple scoring proposal additionally based on not only CT imaging as strongly recommended by the guideline but also blood routine test,especially for primary screening of such patients in the out-patient department.

Progression rate to primary angle closure following laser peripheral iridotomy in primary angle-closure suspects: a randomised study

AIM:To report the progression rate(PR)to primary angle closure(PAC)following laser peripheral iridotomy(LPI)in PAC suspects(PACS).METHODS:Prospective,randomized controlled interventional clinical trial conducted at the Handan Eye Hospital,China.Totally 134 bilateral PACS,defined as non-visibility of the posterior trabecular meshwork for≥180 degrees on gonioscopy were randomly assigned to undergo LPI in one eye.Gonioscopy and Goldmann applanation tonometry were performed prior to,on day 7 and 12 mo post LPI.RESULTS:Eighty of 134 patients(59.7%)could be followed up at one year.The mean intraocular pressure(IOP)in treated eyes was 15.9±2.6 mm Hg at baseline,15.4±3.0 mm Hg on day 7;16.5±2.9 mm Hg at one month,and 15.5±2.9 mm Hg at 12 mo;the IOP in untreated eyes was similar(P=0.834).One or more quadrants of the angle opened in 93.7%of the LPI treated eyes,but 67.0%(53/79)remained closed in two or more quadrants.The PR to PAC in untreated eyes was 3.75%and one developed acute angleclosure glaucoma(AACG);the PR to PAC in treated eyes was 2.5%and none had developed peripheral anterior synechia(PAS)or AACG.CONCLUSION:LPI can open some of the occludable angle in the majority of eyes with PACS,but 67%continue to have non-visibility of the trabecular meshwork for over 180 degrees.

Comparison of diagnostic validity of two autism rating scales for suspected autism in a large Chinese sample

BACKGROUND Autism is the most common clinical developmental disorder in children.The childhood autism rating scale(CARS)and autistic autism behavior checklist(ABC)are the most commonly used assessment scales for diagnosing autism.However,the diagnostic validations and the corresponding cutoffs for CARS and ABC in individuals with suspected autism spectrum disorder(ASD)remain unclear.Furthermore,for suspected ASD in China,it remains unclear whether CARS is a better diagnostic tool than ABC.Also unclear is whether the current cutoff points for ABC and CARS are suitable for the accurate diagnosis of ASD.AIM To investigate the diagnostic validity of CARS and ABC based on a large Chinese sample.METHODS A total of 591 outpatient children from the ASD Unit at Beijing Children’s Hospital between June and November 2019 were identified.First,the Clancy autism behavior scale(CABS)was used to screen out suspected autism from these children.Then,each suspected ASD was evaluated by CARS and ABC.Receiver operating characteristic(ROC)curve analysis was used to compare diagnostic validations.We also calculated the area under the curve(AUC)for both CARS and ABC.RESULTS We found that the Cronbach alpha coefficients of CARS and ABC were 0.772 and 0.426,respectively.Therefore,the reliability of the CARS was higher than that of the ABC.In addition,we found that the correlation between CARS and CABS was 0.732.Next,we performed ROC curve analysis for CARS and ABC,which yielded AUC values of 0.846 and 0.768,respectively.The cutoff value,which is associated with the maximum Youden index,is usually applied as a decision threshold.We found that the cutoff values of CARS and ABC were 34 and 67,respectively.CONCLUSION This result indicated that CARS is superior to ABC in the Chinese population with suspected ASD.

Suspected SARS-CoV-2 infection with fever and coronary heart disease:A case report

BACKGROUND The coronavirus disease 2019(COVID-19)is an emerging infectious disease caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Suspected cases accounted for a large proportion in the early stage of the COVID-19 outbreak.The deviation of the nucleic acid test by throat swab(the current gold standard of COVID-19)caused by variation in sampling techniques and reagent kits and coupled with nonspecific clinical manifestations make confirmation of the suspected cases difficult.Proper management of the suspected cases of COVID-19 is crucial for disease control.CASE SUMMARY A 65-year-old male presented with fever,lymphopenia,and chest computed tomography(CT)images similar to COVID-19 after percutaneous coronary intervention.The patient was diagnosed as having bacterial pneumonia with cardiogenic pulmonary edema instead of COVID-19.This was based on four negative results for throat swab detection of SARS-CoV-2 nucleic acid using reverse transcriptase-polymerase chain reaction assay and one negative result for serological antibody of SARS-CoV-2 with the serological assay.Additionally,the distribution of ground-glass opacities and thickened blood vessels from the CT images differed from COVID-19 features,which further supported the exclusion of COVID-19.CONCLUSION Distinguishing COVID-19 patients from those with bacterial pneumonia with cardiogenic pulmonary edema can be difficult.Therefore,it requires serious identification.

Highly sensitive troponin I assay in the diagnosis of coronary artery disease in patients with suspected stable angina

BACKGROUND Evaluation of suspected stable angina patients with probable coronary artery disease(CAD)in the community is challenging.In the United Kingdom,patients with suspected stable angina are referred by community physicians to be assessed by specialists within the hospital system in rapid access chest pain clinics(RACPC).The role of a highly sensitive troponin I(uscTnI)assay in the diagnosis of suspected CAD in a RACPC in a“real-life”setting in a non-academic hospital has not been explored.AIM To examine the diagnostic value of uscTnI(detection limit 0.12 ng/L,upper reference range 8.15 ng/L,and detected uscTnI in 96.8%of the reference population),in the evaluation of stable CAD in a non-selected patient group,with several co-morbidities,who presented to the RACPC.METHODS One hundred and seventy two RACPC patients were assigned to either functional or anatomical testing according to the hospital protocol.RESULTS The investigations offered to patients were exercise tolerance test 7.6%,24 h ECG 1.2%,Echocardiogram 14.5%,stress echocardiogram 8.1%,coronary computed tomography angiography(CCTA)12.8%,coronary angiogram 13.4%,17.4%were diagnosed with non-cardiac chest pain,3.5%treated as stable angina,8.2%reviewed by cardiologists,electronic medical records were not available in 10.4%.Receiver operating characteristic curves for CAD used uscTnI values measured in patients who underwent functional testing,angiogram or CCTA.Values>0.52 ng/L showed 100%sensitivity and at>11.6 ng/L showed 100%specificity.In the range>0.52-11.6 ng/L,uscTnI may not have the same diagnostic potential.In patients assigned to coronary angiogram higher concentrations of uscTnI was associated with severe CAD.Low levels of uscTnI and low pre-test probability of CAD(QRISK3)may decrease patient numbers assigned to CCTA.CONCLUSION The uscTnI diagnostic cut-off values in a RACPC will depend on patient population and their presenting co-morbidity.In the presence of clinical comorbidities and previous CAD the uscTnI needs to be used in conjunction with clinical assessment.

Application of the Modality of Multiple Disciplinary Team for a Perioperative Patient with Suspected Novel Coronavirus Pneumonia and Cervical Spine Fracture in Nursing

With the explosive spread of novel coronavirus pneumonia, a major public major public health emergency has been declared around the world. Our country has come to a crucial stage of “external defense input, internal defense rebound” and strict quarantine measures are taken in all ports of entry throughout the country. Operations on patients with cervical spine during the quarantine, which not only increases the risk of surgical treatment, but also increases the difficulty of perioperative nursing. The objective is to explore the result of application of the modality of multiple disciplinary team for a perioperative patient with suspected novel coronavirus pneumonia and cervical spine fracture in nursing. The patient’s condition and nursing measures are studied and discussed from various specialist angle through the multidisciplinary team established by the isolation ward, orthopedics department, emergency department, anesthesiology department, operating room, rehabilitation department, psychology department and so on, and the overall and personalized surgical and nursing planning is formed through interdisciplinary advice. The nursing experience is summarized in this paper.

解决SQL Server数据库被标记为“Suspect”的方法

SQL Server数据库在非正常中断的情况下,常常被标记为"Suspect",而导致数据库不能被访问,产生错误号为926的系统错误。文中给出了一种解决SQL Server数据库被标记为"Suspect"的方法,适用于Sybase SQL Server和Microsoft SQL Server数据库,操作起来简便可行、安全可靠。

Sybase数据库被标记为“suspect”的解决方法

根据维护“宁夏本地计费账务综合系统”Sybase数据库系统的经验和体会 ,对Sybase数据库系统出现的“currentdatabasehasbeenmarkedsuspect”错误问题进行两个方面的分析 。

Case report of a patient with suspected COVID-19 with depression and fever in an epidemic stress environment

During the COVID-19 pandemic,the number of suspected cases,confirmed cases and those who passed away from the virus has been reported in major media and the internet,and has caused a high degree of tension.In addition,people's outdoor activities have been limited,making it more difficult to find outlets for releasing stress.Under this situation,some people began to experience emotions of anxiety and depression.This article reports a case of depression with fever caused by the stress tension of the pandemic.The patient was highly suspected to have contracted COVID-19.The reported patient,who had a history of depression and had been to Wuhan to attend an exam,showed obvious pre-exam anxiety under the epidemic situation,which gradually increased the patient's pressure and then caused some adverse symptoms,such as insomnia,anxiety,sweating and a reoccurrent fever.Local community authorities paid close attention to him and later sent him to a general hospital in Jingmen for quarantine and treatment,as he was suspected of having COVID-19.After being hospitalised for half a month,he was ruled out from having‘COVID-19'and was cured of depression and discharged from the hospital.From this case,we can realise that,under the situation of the epidemic,people are easily prone to insomnia,anxiety and even depression.As clinicians in general hospitals,especially when encountering large emergencies,we must carefully inquire about the patient's medical history while strengthening our understanding of psychiatric knowledge to improve the recognition rate for depression.

Midnight Salivary Cortisol and Other Effective Factors in the Graduation of Clinical Suspect of Cushing Syndrome: Is There Any Reasonable Clinical Score?

Background: Diagnosis of Cushing’s Syndrome (CS) at the right time and with the right method is getting more important for the patients and clinicians due to high mortality rate. The most appropriate laboratory test will provide great benefits in terms of cost-effectiveness in the well-chosen group of patients. Selection of the high risk group is of crucial importance for the true diagnosis and treatment on time. Aim: The aim of this study was to evaluate the worth of the midnight salivary cortisol and to establish other effective factors in the graduation of clinical suspect of CS. Material and Methods: 115 patients were evaluated in weight, height, body mass index (BMI), waist/hip ratio, systolic, diastolic blood pressures, hirsutism, weight gain, purple-stria, plethore, buffalo-hump, supraclavicular fullness, temporal fat cushion, acnea, moonface, proximal muscle weakness, lower limb edema, ecchymosis, loss of libido, depression, diabetes mellitus, hypertension, allopecia of all patients were noted in the evaluation forms (23 findings). Patients were grouped according to clinical scores, low (16). Results: When we compare the groups in terms of midnight salivary cortisol, morning salivary cortisol after overnight dexamethasone suppression test, we found statistically significant relationship between the low and high clinical score groups, as well as between medium and high score groups (p: 0.0001). Urinary free cortisol was statistically significant only between low and high clinical score groups (p: 0.0001). Conclusion: This clinical scoring system which includes clinical signs and laboratory findings both, can be used for selection of the high risk group.

Human Immunodeficiency Virus and Immunological Profiles among Suspected Tuberculosis Cases in Mombasa County, Kenya

Background: Human immunodeficiency virus (HIV) is a major public health concern and cause of death globally including Kenya. HIV infection is characterised by CD4+ lymphocyte depletion manifested through the loss of the immune response capacity. Aim: This study aimed to determine the prevalence of HIV infection and CD4+T cell counts among suspected tuberculosis (TB) cases seeking healthcare at TB clinics in Mombasa County, Kenya. Study Design: Hospital and laboratory based cross-sectional study was carried between May 2011 and November 2013 in Coast General Referral Hospital, Tudor, Port-Reitz, Mlaleo, Likoni and Mikandani districts and sub-districts hospitals. Methodology: A total of 500 suspected TB cases (271 males and 229 females) were screened for HIV infection using Trinity Biotech Uni-GoldTM test and positives confirmed with the enzyme- linked immunosorbent assay. CD4+ and CD8+T cells were analyzed using a BD FACS Count flow cytometer. A questionnaire was used to collect demographic data of the participants. Results: In total, 127 (25.4%) of the suspects were HIV infected 55.1% females and 44.9% males. Females were significantly affected than males (OR = 0.78;95% CI: 0.44 - 1.37;p = 0.042). The majority (36.2%) of the HIV cases were in the 25 - 34 years age group followed by the 35 - 44 (33.9%), 45 - 54 (16.5%) and 18 - 24 (7.1%) age groups, respectively. Widowed (AOR = 6.14;95% CI: 1.53 - 20.54;p < 0.033), alcohol (AOR = 2.83;95% CI: 1.71 - 4.87;p < 0.001) and condom use (AOR = 2.31;95% CI: 1.62 = 4.71;p < 0.002) were risk factors associated with HIV infection. The mean CD4 cell count was 333.27 ± 150.59 cells/mm3 and it was higher in males (343.05 ± 149.33 cells/mm3) than females (325.93 ± 152.92 cells). The mean values of white blood cells (5.9 ± 2.42) × 109/l), packed cell value (34.1% ± 4.3%), platelets (195.16 ± 88.7) × 109/l and erythrocyte sedimentation rate (102.0 ± 17.4 mm/hr) were significantly lower than the control group (p < 0.05). Conclusion: The prevalence of HIV infection among suspected TB cases was 25.4% which was higher than the current national average HIV prevalence of 6.9%. Lower CD4+ lymphocyte count was found to be the only predicting factor for HIV. There was a significant relationship between CD4/ESR and HIV infection.

Prediction of Criminal Suspects Based on Association Rules and Tag Clustering

To date, not many studies have been conducted on criminal prediction. In this study, the criminal data related to city S is divided into a training data set and a validation data set at a 1:1 ratio in light of the personal tag data and the travel and accommodation data of criminals and ordinary people in city S. Firstly, the FP-growth algorithm is adopted to calculate association rules between the criminals and the ordinary people in their travel and hotel accommodation data, in order to discover criminal suspects based on association rules. Secondly, the DBSCAN algorithm is employed for clustering of the tag data of the criminals and the ordinary people, followed by similarity calculation, in order to discover criminal suspects based on tag clustering. Lastly, intersection operation is performed on the above two sets of criminal suspects, and the resulting intersection is verified against the criminal validation set for elimination of criminals who appear in the intersection so as to obtain final criminal suspects. Results show that a set of 648 criminal suspects is retrieved based on the association rules calculated by the FP-growth algorithm, while a set of 973 criminal suspects is retrieved based on DBSCAN clustering and cosine similarity of the personal tags;the number of criminal suspects is narrowed down to 567 after the intersection operation of the two sets, and 419 of the 567 criminal suspects are further verified to be criminals using the validation set, thereby leaving the other 148 to be the final criminal suspects and giving a prediction accuracy of 73.9%. The data mining method of criminal suspects based on association rules and tag clustering in this study has been successfully applied to the police system of city S, and the experiment proves the effectiveness of this method in detecting criminal suspects.

DNA damage and neurodegeneration:the unusual suspect

Neurodegenerative diseases are caused by the loss of neuro- nal cells. As neurons deteriorate, a patient may experience relatively mild symptoms such as failing to name objects and people. However, with the progression of the disease, symp- toms worsen resulting in loss of independence and a sense of＂loss of oneself＂. Finally, the patient dies from a variety of complications.

浅谈object、suspect和protest的微妙用法

英语中有些动词的用法对学生来说十分微妙,我们叫它微妙动词(tricky verbs)。这类动词的微妙之处表现在两个方面:一是词义不易用汉语确切地解释清楚,二是由于搭配关系引起误解或造成使用上的困难。现将object、suspect和protest的微妙用法归纳如下: 学生在学习object这个词的时候,往往只记住汉语释义是“反对”,并记住它的后面要跟to,由于这两个意思在脑子里扎根较深,所以往往忽视了。object与宾语从句连用时意义上发生了变化,当它与宾语从句连用时,从句是指“反对的理由”而不是指“反对的内容”。object that…是指出“…作为反对的理由”,而不是“反对或不赞成”。例如:

On the Perfection of Legislation on Property Rights Protection of Criminal Suspects in Investigation Process

The property rights of a criminal suspect are an important component of human rights,but,unfortunately,may be restrained by factors in the investigation process like judicial stereotypes,legal regulations,and a lack of initiative on the part of the rights holder,which,from time to time,may result in infringements of such rights.Thus it is necessary for us to probe into the reasons why such infringements occur and sort out the contents about enhancing property rights protection of criminal suspects in the amendment to Criminal Procedure Law.To counter the existing disregard for property rights protection of criminal suspects and its legislative deficiency,judicial reform must be carried out as to three aspects:procedural improvement,institutional establishment,and judicial transformation property rights ideas in criminal proceedings.

Blood from Mosquito Traps Finnish Suspect

Police in Finland believe they have caught a car-thief thanks to a DNA sample taken from a sample of his blood found inside a mosquito.

Analysis of Clinical and Imaging Characteristics of Suspected and Confirmed COVID-19 Patients

Objective:To analyze the clinical characteristics and chest CT imaging characteristics of patients with confirmed COVID-19(COVID-19)and patients with suspected COVID-19.Methods:The study time span was from February 2020 to May 2020.The case samples were selected from 72 patients with confirmed covid-19 and suspected covid-19 diagnosed and treated by The First People’s Hospital of Yinchuan and Yinchuan Temporary Emergency Hospital,including 38 patients with confirmed covid-19 and 34 patients with suspected covid-19.All patients underwent laboratory examination and chest CT examination,and the specific examination results were compared and analyzed.Results:There were significant differences in number of white blood cell,percentage of lymphocytes,creatine kinase and erythrocyte sedimentation rate between confirmed and suspected COVID-19 patients(P<0.05).The CT imaging characteristics of COVID-19 patients were compared with those of suspected COVID-19 patients.The lesions of COVID-19 patients were mostly characterized by mixed ground glass density and pure ground glass density.There were vascular thickening and interstitial thickness increase,and accompanied by bronchiectasis or air bronchogram.The distribution of lesions was mostly subpleural without pleural effusion.The lesion area of suspected COVID-19 patients mostly showed solid density and mixed ground glass density.The lesion was distributed along bronchovascular and pleural effusion was observed.Conclusion:There are some differences in biochemical indexes and chest CT images between confirmed and suspected covid-19 patients,which can be used for differential diagnosis.