A random sample survey was conducted in 17 community medical institutes in 4 districts in Beijing.Among an effective sample of 385 residents.47.5％ (n =183)of community residents chose community medical institutes for first contact care while 52.5％ (n =202) opted for class other hospitals.Residents with lower education levels tended to choose community medical institutes (P =0.01).And those with chronic diseases preferred to choose communities (P=0.00).

Objective To investigate the qualitative diagnosis of salivary gland mass with contrastenhanced ultrasound(CEUS).Methods The CEUS manifestations in 78 cases with salivary gland mass were observed after intravenous bolus injection with contrast agent SonoVue and confirmed by histology.Results Among 78 salivary gland masses,there were 29 cases with pleomorphic adenomas (37.2％),19with Warthin's tumors (24.4 ％),7 with basal cell adenomas (8.9 ％),and 11 with the other benign masses (14.1％),12 with malignant tumors (15.4％).The intensity of contrast-enhanced masses,whether the enhanced mass margin was clear,whether the peripheral enhancement rim was complete and whether the mass was enlarged were the diagnostic criteria to differentiate the benign and malignant tumors.The accuracy,the sensitivity,specificity,positive predictive value and negative predictive value were 87.2％,95.2％,56.3％,89.4％,75.0％ respectively,and the results also displayed positive likelihood ratio and negative likelihood ratio were 2.178,0.085 respectively.Although they presented with the highest incidence among benign tumors,their CEUS manifestations showed remarkable statistical differences when the pleomorphic adenoma was compared with Warthin' s tumor and basal cell adenoma respectively in enhancement intensity(P ＜0.01) while there were no statistical differences between Warthin's tumors and basal cell adenomas (P ＞0.05).Conclusions CEUS manifestations of salivary gland mass were helpful to the differential diagnosis of various salivary gland tumors.

OBJECTIVE:To systematically evaluate therapeutic efficacy and safety of Yupingfeng powder in adjavant therapy of allergic rhinitis,and to provide evidence-based reference for clinical treatment. METHODS:Retrieved from Wanfang database,VIP,CJFD,CBM,Cochrane Library,EMBase and PubMed,RCTs about Yupingfeng powder combined with chemical medicine (trial group)vs. chemical medicine alone in the treatment of allergic rhinitis were collected. Meta-analysis was conducted by using Rev Man 5.2 statistical software after data extraction and quality evaluation according to Cochrane system evaluation method 5.1.0. RESULTS:A total of 15 RCTs were included,invovling 1366 patients. The results of Meta analysis showed that response rate [OR=3.95,95%CI(2.80,5.58),P<0.001],recurrence rate [OR=0.37,95%CI(0.22,0.63),P<0.001] and the incidence of ADR [OR=0.15,95%CI(0.06,0.35),P<0.001] in trial group were significantly higher than control group,with statistical significance. CONCLUSIONS:Yupingfeng powder in adjuvant therapy of allergic rhinitis show good therapeutic efficacy and can reduce recur-rence rate with good safety.

Objective To evaluate the 64-slice CT angiography in characterizing the coronary venous anatomy and the arterio-venous relationship.Methods Sixty-four slice CT coronary veins angiography images of 300 patients(187 men and 113 women,)were analyzed.The visibility of the coronary veins and arterio-venous spatial relationship were assessed qualitatively on two-and three-dimensional displays.The diameter of the coronary sinus ostium(CSO),middle cardiac vein ostium(MCVO)and posterior vein of left ventricle ostium(PVLVO)were measured.All data was statistically processed with SPSS for Windows.Results The CS,great cardiac vein(GCV)and MCV could be clearly visualized in all of the images.1-3 branches of PVLV could be observed in 273 patients(91.0%).Small cardiac vein(SCV)and Marshall vein were found in 56(18.7%)and 24(8.0%)cases respectively.Three patients had permanent vena cava superior on the left and one patient had a CS diverticulum.Posterior descending artery(PDA)was concomitant with MCV in 189 cases(63.0%)and intersected with MCV in 96 cases(32.0%).Left circumflex artery(LCX)was concomitant with CS in 122 cases(40.7%),intersected with MCV in 15 cases(5.0%),and intersected with PVLV in 104 cases(34.7%).There were no significant differences in age,sex and CHD groups among CSO,MCV,PVLV value.The supero-inferior diameter of CSO had a significant difference between male and female(F=6.67,P＜0.05).Conclusion Sixty-four slice CT venous angiography is able to be used for guiding electrophysiological procedures,which is especially useful due to the considerable variations in venous anatomy.

Objective To prospectively evaluate the sensitivity and specificity of ankle brachial index (ABI) in the diagnosis of lower extremity arterial disease(LEAD)by using conventional digital subtraction angiography (DSA) as the reference standard, and to research the threshold value of ABI screening test for diagnosis. Methods A total of 383 consecutive patients (245 men and 138 women, mean age (64.1±11.7) years] underwent conventional DSA and ABI measurement. Receiver operator characteristics (ROC) analysis was performed to assess possible threshold values for predicting the LEAD in these patients. Results Conventional DSA was used as the gold standard in defining≥50% luminal stenosis for the diagnosis of LEAD. 0. 95 was the overall cutoff of ABI which was associatcd with 93.0% sensitivity, 85.0% specificity, 8.81 positive likelihood ratio(+LR) and 0. 23 negative likelihood ratio(-LR) for detection of hemodynamically significant stenosis (lesions>≥50%) in all 383 subjects (P<0.01). The area under the ROC curve was 0. 953(95%CI 0.920～0.985). Conclusions ABI measurement is an accurate and reliable non-invasive alternative to conventional DSA in the diagnosis of lower extremity arterial disease. And the cut-off 0.95 is the threshold ABI value for detecting LEAD in Chinese population.

Objective: To explore the influencing factors of slow blood flow phenomenon after emergency percutaneous coronary intervention (PCI) in patients with acute myocardial infarction (AMI). Methods: Clinical and PCI angiographic data of 488 patients, who were diagnosed as AMI and received primary PCI in our hospital from Jan 2010 to Jun 2011, were retrospectively analyzed. Patients were divided into slow blood flow group (n=51, TIMI flow ≤ grade 2) and normal flow group (n=437, TIMI flow= grade 3). Their clinical characteristics between two groups were compared. Results: Compared with normal flow group, there were significant reductions in percentages of thrombus aspiration (75.3% vs. 60.8%) and application of platelet glycoprotein IIb/IIIa receptor antagonist (81.7% vs. 68.6%) during PCI, and significant rise in total length of implanted stents [(31.8±12.2) mm vs. (35.7±12.0) mm] in slow blood flow group, P<0.05 all. Multi-factor Logistic regression analysis indicated that percentages of thrombus aspiration during PCI and total length of stents were independent influencing factors for slow blood flow (P<0.05 both). Conclusion: Percentages of thrombus aspiration and total length of stents during PCI are independent influencing factors for slow blood flow.

ObjectiveTo evaluate the efficacy and safety of tirofiban in treatment of ST segment elevation acute myocardial infarction(STEAMI) no-reflow and acute thrombosis after emergency percutaneous coronary intervention(PCI). MethodsForty patients which were made definite diagnosis of STEAMI were intra-coronary artary injection fortirofiban after emergency PCI stenting occured no-reflow and acute thrombosis. First,the dose of 0.4μg·kg-1·min-1 was given from intra--coronary artary injection of tirofiban within three minutes, after 30min the dose were given 0.1μg·kg-1·min-1 for 48 hours. ResultsThe no re-flow and acute thrombosis was completely disappeared within five minutes,at the time,side effect with in one week was not observed. ConclusionsTirofiban treatment by direct injection in coronary arteries combined with emergency PCI, can increase the repeffusion rate of infarction related vessel in AMI patients,and improve TIMI reflow. This reperfusion method was effective and safe.

Objective To evaluate the influence of renal insufficiency (RI) on long-term major adverse cardiac events (MACE) of patients with acute myocardial infarction (AMI) plus metabolic syndrome (MetS) and received percutaneous coronary intervention (PCI). Methods This was a retrospective study. From February, 2011 to Octorber, 2013 , we consecutivly enrolled 223 AMI patients with MetS in the First Affiliated Hospital of China Medical University. There were 88 patients with RI in group A, and 135 patients as the control group (group B). Patients were followed up for major adverse cardiac events (MACE) for 1 year. Results Compared with group B, the incidence of 1-year MACE of patients in group A was increased (36.4% vs. 18.5%, P= 0.003). Result of Cox proportional hazard regression analysis showed that RI was a predictive factor for 1-year MACE (HR = 3.56,95%CI 1.004 ~ 4.170, P = 0.002). Conclusion The incidence of 1-year MACE for AMI patients with RI and MetS post-PCI was high. RI was a risk factor for poor prognosis of AMI patients with MetS.

Objective To investigate the relationship between two-lung ventilation (TLV) with single-lumen endotracheal tube (SLT), one-lung ventilation (OLV) with double-lumen endotracheal tube (DLT) and postoperative pulmonary complications (PPCs) after total thoracoscopic cardiac surgery. Methods The clinical data of patients who underwent totally thoracoscopic cardiac surgeries in the Guangdong Provincial People’s Hospital from October 2019 to October 2021 were retrospectively analyzed. The patients were divided into 2 group according to the type of endotracheal tube, including a SLT group and a DLT group. Baseline data, surgical variables and PPCs were compared. The influencing factors of PPCs in the two groups were analyzed by binary logistic regression analysis. Results Finally 349 patients were enrolled, including 180 males and 169 females with an average age of (50.0±14.8) years. There were 219 patients in the SLT group and 130 patients in the DLT group. There was no statistical difference in baseline data, surgical variables or PPCs between the two groups (P＞0.05). Binary logistic regression analysis showed that PPCs were related to body mass index in the SLT group (OR=0.778, 95%CI 0.637 to 0.951, P=0.014) and preoperative smoking history in the DLT group (OR=0.058, 95%CI 0.004 to 0.903, P=0.042). Conclusion For the patients who undergo totally thoracoscopic cardiac surgery, TLV with SLT and OLV with DLT show no significant association with PPCs. At the same time, PPCs are associated with body mass index in the SLT group, while associated with preoperative smoking history in the DLT group.