Objective To establish a method for the determination of alum residual amount in Rhizoma Pinelliae Preparata from different companies,and to provide a scientific evidence for quality evaluation of Rhizoma Pinelliae Preparata.Methods Na2EDTA titration method was applied for the quantitative analysis.Results There were obvious differences in residual quantity of alum in Rhizoma Pinelliae Preparata from different companies.Conclusion The method is simple,reproducible and accurate,it can be used for the determination of alum residual amount in Rhizoma Pinelliae Preparata.

Objective To investigate the effect of folic acid on plasma homocysteine(Hcy) levels and major cardiovascular events in elderly patients with H hypertension.Methods 200 elderly patients with H hypertension were randomly divided into the observation group and control group with 100 cases in each group according to the digital list methods,the control group was given health education and routine anti-hypertensive drug for treatment while the observation group was given folic acid on basis of the conventional treatment,the Hcy levels after 3 months of treatment and incidence of major cardiovascular events among 3 years of the two groups were compared.Results (1) The level of plasma Hcy in the observation group decreased significantly after treatment,with statistically significant difference when compared with before treatment (t =12.32,P ＜ 0.05),that in the control group had no obvious change after treatment than before treatment,there was statistically significant difference between the two groups after treatment(t =11.45,P ＞ 0.05);(2) The occurrence of cardiovascular events among 3 year after treatment of the observation group was 6 cases,the incidence rate was 6％,the control group occurred 15 cases,the incidence rate was 15％,the difference in the incidence of the two groups was statistically significant(x2 =8.24,P ＜ 0.05).Conclusion Folic acid intervention can reduce the plasma Hcy levels in elderly patients with H hypertension and control the occurrence of cardiovascular events.

Objective This study aims to analyze the independent risk factors associated with postoperative delirium of patients undergoing Stanford A aortic dissection surgery.Methods Clinical data of the patients who underwent Stanford A aortic dissection surgery from December 2014 to October 2015 were collected.All patients received surgery under deep hypothermic circulatory arrest(DHCA) and the nasal temperature goal was below 23℃.After surgery,patients were transferred to the cardiovascular ICU,where they received standard postoperative care.The delirium was diagnosed according to the criteria of the confusion assessment method for the intensive care unit(CAM-ICU).The possible risk factors of pre-operation,during operation or post-operation were analyzed via univariate analysis and multivariate logistic regression to determine the independent risk factorsof postoperative delirium.Results 148 patients underwent Stanford A aortic dissection surgery which the incidence of postoperative delirium was 31.1％ (46/148).Univariate analysis showed the associated risk factors were age,hypertension,cognitive impairment,emergency operation,operation time,aorta clamping time,DHCA time,fluctuation of blood pressure during operation,blood transfusion,quality of sleep,length of ICU stay and electrolyte disturbance(P ＜ 0.05).Multivariate logistic regression analysis revealed that hypertension,cognitive impairment,fluctuation of mean arterial blood pressure(MAP) ＞ 30 mmHg (1 mmHg =0.133 kPa),DHCA time ＞ 40 min,postoperative poor quality of sleep and electrolyte disturbance were independently associated with postoperative delirium after Stanford A aortic dissection surgery(P ＜ 0.05).Conclusion Delirium is a frequent complication.Factors independently associated with delirium are hypertension,cognitive impairment,DHCA time,postoperative poor quality of sleep and electrolyte disturbance.Prevent,assess and manage delirium should be paid more attention and reinforced.

Objective To analyze the incidence rate and the perioperative risk factors associated with delirium after cardiac surgery.Methods We enrolled 622 patients between October 2014 and March 2015 in the department of cardiovascular surgery in Henan Provincial People's Hospital who were allocated to group PD and non-PD according to the Confusion Assessment Method(CAM) after the cardiac operation.Baseline demographics,perioperative data,and postoperative outcomes of these patients were recorded and analyzed via chi-square test and multivariate logistic regression analysis to determine the risk factors of postoperative delirium.Results Postoperative delirium was detected in 102 patients according to CAM criteria.The incidence was 16.4％.Multivariate logistic regression analysis revealed that age (OR =3.456;95％ CI:2.431-4.569),preoperative atrial fibrillation (OR =1.987;95％ CI:3.562-7.862),prolonged surgery duration (OR =1.246;95％ CI:3.164-5.982),postoperative pain (OR =5.356;95 ％ CI:1.386-9.374)were independently associated with postoperative delirium after cardiac surgery.Conclusions Delirium is a frequent complication,age,preoperative atrial fibrillation,prolonged surgery duration,postoperative pain are independent risk factors for delirium following cardiac surgery.Management according to potential risk factors may be associated with preferable therapeutic outcomes.

Objective To analyze the nutritional status of patients with continuous ambulatory peritoneal dialysis and explore reasonable and effective nursing measures.Methods Nutritional assessment was performed in 60 patients with continuous ambulatory peritoneal dialysis,using subjective integrated nutritional assessment,dietary analysis,measurement of biochemical indexes of the human body to analyze the factors that might affect the nutritional status of patients.Results 60 cases of malnutrition occurrd in 20 patients (33.3per cent),mainly due to insufficient protein and energy intake,inadequate dialysis,peritoneal inflammation,metabolic acidosis,psychosocial factors and not using erythropoietin,and so on.Conclusions Measures such as emphasis paid to malnutrition status of continuous ambulatory peritoneal dialysis patients,giving guidance of rational diet,performing full implementation of nursing measures according to the related factors,can improve the nutritional status of patients and improve patients' quality of life.

Objective To explore the risk factors and optional treatment strategies for postoperative hypoxemia in patients undergoing acute Stanford A aortic dissection surgery.Methods From December 2012 to April 2014,108 patients received acute Stanford A aortic dissection surgery in Henan Provincial People' s Hospital.Of them,74 men vs.34 women,age (43.2 ± 10.1) years old,and weight (71.3 ± 18.4) kg.The operation was performed within 14 days since disease onset.All patients received surgery under deep hypothermic circulatory arrest(DHCA) and the nasal temperature goal was below 20 ℃ .Postoperative hypoxemia was defined as the arterial partial oxygen over inspired oxygen fraction(PaO2/FiO2) more than 200 after admission to ICU.Pulmonary protective ventilation management took place immediately after hypoxemia was diagnosed.Comparison analysis was performed between hypoxemia group and non-hypoxemia group in age,gender,body mass index (BMI),smoking history,duration of cardiopulmonary bypass(CPB),duration of DHCA,blood transfusion,length of mechanical ventilation,length of ICU stay and mortality.Results The incidence of postoperative hypoxemia was 40.7％ (44/108).There were no statistical differences in age,gender,hypertension,diabetes mellitus or COPD history.In the hypoxemia group,11 cases developed pulmonary infection,3 cases underwent tracheotomy and 10 cases died.In the non-hypoxemia group,4 patients died.Postoperative hypoxemia was significantly associated with more mortality,length of ventilation time,length of ICU stay and in hospital(P ＞ 0.05).Univariate analysis showed the associated factors were BMI,smoking history,preoperative hypoxemia,LVEF ＜ 0.45,operation time,aorta clamping time,DHCA time and blood transfusion.Multivariate analysis showed the independent predictive factors were preoperative hypoxemia,DHCA ＞40 min,blood transfusion ＞ 10 U and BMI ＞25 kg/ m2.Conclusion Obesity,massive blood transfusion,long DHCA time and preoperative hypoxemia are independent risk factors of postoperative hypoxemia in patients undergoing acute Stanford A aortic dissection surgery.Perioperative pulmonary protection should be paid more attention and reinforced.

Objectives To investigate the markers of endothelial injury, adipocytokine and thrombotic activity and explore whether there are cardiovascular disease risk factors in antiretroviral-naive HIV patients. Methods Clinical data and venous blood samples were collected from 43 anti-retroviral naive HIV-infected patients during February -October 2009 in our center, and compared with 17 healthy subjects.Plasma leptin, adiponectin, soluble intercellular adhesion molecule-1 ( sICAM-1 ), D-dimer were measured by ELISA. Four markers and cholesterol, triglyceride, fasting plasma glucose were compared between the two groups. The CD4+ T cells and percentages of CD38, HLA-DR on CD8+ T were determined by flow cytometry and plasma HIV copies were detected with bDNA analyzer among HIV-infected participants.Spearman correlations between the significant markers and CD4+ T cells, CD8+ CD38+/CD8+, CD8+ HLA-DR +/CD8+, HIV viral load were examined among HIV-infected participants. Analyses were conducted by using Stata version 7. Results Thirty-eight of the 43 patients were sexually infected by HIV and the median absolute CD4+ T cell count was ( 133 ± 82 ) cells/μl, HIV RNA was (4. 42 ± 0. 66 ) lg copies/ml. HIV-infected patients, compared with healthy subjects, had lower leptin [11.41 (7.91,14. 53 )μg/L vs 55.31( 16. 49,229.65 ) μg/L, P= 0. 0005], adiponectin [1.79 ( 1.40,4. 00 ) mg/L vs 3.36 ( 2. 92,4. 18 ) mg/L,P =0. 003] and higher sICAM-1 [1.71 (1.11,2.40) mg/L vs 0. 69 ( 0. 57, 0. 80 ) mg/L, P = 0. 0000].No significant differences exist in cholesterol, triglyceride, fasting plasma glucose. For HIV-infected participants, sICAM-1 tended to correlate with CD8+ CD38+/CD8+ and HIV viral load ( r= 0.3378, P= 0.0267;r = 0.3904,P = 0.0096). Conclusion Patients with untreated HIV infection have lower leptin, adiponectin and higher sICAM-1 levels and the relationship of these markers to HIV-mediated atherosclerotic risk requires further study.

Objective To explore relationship of the anesthetic risks and intraoperative complications.Methods Preoperative anesthetic risks were assessed with Hussman's method from May 2015 to May 2016 in 2 494 surgical patients, including 1 462 males and 1 032 females.Intraoperative data and complications were tracked and recorded.Results Three hundred and thirty-six intraoperative complications occurred, accounting for 13.47% of total patients.The cardiovascular complications were a major intraoperative complications, accounting for 80.7%.2 494 patients were graded respectively into risk grade 1 with 1 540 (61.75%), grade 2 with 660 (26.46%), grade 3 with 202 (8.10%), grade 4 with 80 (3.21%) and grade 5 with 12 (0.48%).The incidence of complications were 112 (7.28%), 82 (12.42%), 82 (40.59%), 50 (62.50%) and 10 (83.33%) respectively.The sensitivity of prediction was 33.33%, 24.40%, 24.40%, 14.88% and 2.78%;the specificity 33.76%, 73.26%, 94.44%, 98.61% and 99.91%;and the accuracy 33.76%, 66.64%, 85.01%, 87.33% and 86.85%, respectively, in patients with risk grade 1, 2, 3, 4 and 5.Conclusion Hussman's method of anesthetic risks well predicts the intraoperative complications.

Objective: To understand the status of awarences and the influencing factors of food safety among medical students in Shangdong Province,and to provide a reference for improving a healthy eating habit among students on their knowledge about food safety,attitude and behavior. Methods: A total of 2 322 students from 2 medical colleges and universities in Shandong province selected through stratified cluster sampling were investigated with questionnaires. Results: Univariate analysis of variance showed that food safety knowledge differed by gender, grade, major, origin of student, whether learned nutrition knowledge, monthly cost on food (χ2/H=20.48, 128.02, 98.61, 36.50, 77.60, 171.03,P<0.01). In multiple Logistic regression analysis, results showed that gender, major,origin of student, monthly cost on food and the attention of food affect college students’ food safety awareness (P<0.05). Conclusion Food safety awareness among medical students in Shandong Province is relatively high but varies by multiple factors. It is necessary to improve food safety awareness of medical students through various channels.

Objective:To evaluate the diagnostic value of cardiac magnetic resonance (CMR) in myocardial contusion.Methods:A case-control study was performed on 42 patients with blunt chest injury treated in Affiliated Hospital of Hangzhou Normal University from September 2018 to January 2021. There were 24 males and 18 females, with the age range of 23-66 years [(44.2±10.9)years]. The patients were divided into myocardial contusion group ( n=20) and non-myocardial contusion group ( n=22) according to the clinical diagnostic criteria of myocardial contusion (cardiac troponin I>0.06 ng/ml). All the patients underwent CMR examination within 7 days after hospitalization, and eletrocardiography (ECG) as well as transthoracic echocardiography (TTE) examinations with 24 hours. Abnormal findings on CMR, ECG and TTE were compared between the two groups. The receiver operating characteristic (ROC) curve was used for the comparison of the diagnostic efficacy of CMR, ECG and TTE for myocardial contusion. The area under the curve (AUC), sensitivity, specificity, positive predictive value and Youden index of CMR, ECG and TTE were calculated, respectively. Results:There were 15 patients (75%) presenting CMR abnormalities in myocardial contusion group compared to 2 patients (9%) in non-myocardial contusion group ( P<0.01). CMR abnormalities mainly included myocardial oedema, ischemia or hemorrhage, which were located in the left ventricle of 12 patients (71%), right ventricle of 3 (18%) and ventricular septal of 3 (12%). There were 12 patients (60%) showing ECG abnormalities in myocardial contusion group compared to 7 patients (32%) in non-myocardial contusion group ( P>0.05). Abnormal ECG changes included 8 patients (42%) with sinus tachycardia or bradycardia, 5 (26%) with ST-T changes, 3 (16%) with atrial premature beat, 2 (11%) with bundle branch block and 1 (5%) with frequent premature ventricular contractions. There were 10 patients (50%) showing TTE abnormalities in myocardial contusion group compared to 9 patients (41%) in non-myocardial contusion group ( P>0.05). TTE abnormalities manifested as left ventricular diastolic dysfunction in 12 patients (63%) and wall motion abnormalities in 7 (37%). The AUC of CMR, ECG and TTE for diagnosing myocardial contusion was 0.83 (95% CI 0.70-0.96), 0.64 (95% CI 0.47-0.81) and 0.55 (95% CI 0.70-0.72), respectively. For CMR, ECG and TTE, the diagnostic sensitivity was 75.0%, 60.0% and 50.0%, with the specificity of 91.0%, 68.2% and 59.1%, the positive predictive value was 88.2%, 63.2% and 52.6%, and the Youden index of 66.0, 28.2 and 9.1, respectively. Conclusion:CMR can accurately detect myocardial contusion, with better diagnostic performance than ECG and TTE as well as relatively higher sensitivity and specificity, indicating that CMR has great value for clinical diagnosis of myocardial contusion.