Objective To explore the feasibility of high-frequency ultrasound detecting median nerve (MN) in type 2 diabetes mellitus(T2DM)with diabetic peripheral neuropathy(DPN).Methods Forty-two healthy volunteers were included as control group(Group A).Eighty-eight T2DM patients were divided into two groups according to symptoms,signs and electrophysiological results:with DPN (group C,46 patients) and without DPN (Group B,42 patients).The width(W),thickness(T) and cross-sectional area(CSA) of MN at 6 points [the wrist crease,pisiform bone,hamate bone,the 6 cm proximal to the wrist crease,the 4 cm proximal to tip of the medial epicondyle(ME) and the midpoint of the humerus] were evaluated.ROC curve was plotted to determine clinical diagnostic value of three lines on six points in diagnosis of DPN. Results ①Comparing with Group A,the width(P <0.05) except for the 4 cm proximal to tip of ME and the midpoint of the humerus,the thickness (P <0.05) except for the 4 cm distal to ME and CSAs of all points were enlarged in DPN patients(P <0.001).The width(P <0.05)at the wrist crease,hamate bone and the midpoint of the humerus,the thickness (P <0.01) at the wrist crease and pisiform bone,CSAs (P <0.01) of all sites except for the wrist crease were increased in Group B.Comparing Group B with C, the width at the wrist crease,the thickness in the midpoint of the humerus,CSAs except for the 4 cm proximal to ME and the midpoint of the humerus were dramaticlly increased in Group C(P <0.001).②A diagnostic value comparison:when diagnostic value of W,T and CSA at six points is the most predictive, the sensitivity is 80.4%,84.8%,84.8% respectively and specificities are all 54.8%.Diagnostic value of CSA and T is superior to the width.The CSA and T of the hamate bone level were the most predictive of DPN.The corresponding optimal cut-off value was 0.097 cm 2 ,0.233 cm respectively.Conclusions The backbone and the abnormal changes of different lines of the MN in DPN can be observed by high-frequency ultrasound.The width and thickness of the MN at six points are increased in different degree,but CSAs of all levels can enlarge.When diagnostic value of W,T and CSA at six points is the most predictive for DPN, the sensitivity is superior to specificity respectively.The CSA and T of the hamate bone levelare the most predictive for the evaluation of DPN.

Objective To study the changes of neutrophil surface molecule CD64 and inflammatory factor levels in patients with burn infection. Methods 46 cases of patients with burn infection who were treated in the department of burn in our hospital between March 2010 and October 2015 were selected as the observation group. Meanwhile, 46 cases of healthy people who underwent physical examination in our hospital during the same period were included in the control group. The levels of neutrophil surface molecule CD64, C-reactive protein (CRP), white blood cell count (WBC) and inflammatory factor [interleukin IL-6 (IL-6), interleukin (IL-8), tumor necro-sis factor (TNF-α) in the two groups of subjects were determined by flow cytometry and were compared. Results In the observation group, the levels of CD64, CRP, WBC and inflammatory factors were significantly higher than those in the control group (P < 0.05). Conclusion The levels of CD64, CRP, WBC and inflammatory factors in patients with burn infection are significantly higher than those in healthy people , which indicates that neutrophil surface molecule CD64, inflammatory factors and burn infection are closely correlated.

To evaluate right atrial ( RA ) structure and function of different left ventricular geometry in patients with obstructive sleep apnea syndrome ( OSAS ) by real‐time three‐dimensional echocardiography ( RT‐3DE) . Methods One hundred and ninety‐nine patients with habitual snoring were diagnosed as OSAS by polysomnography with apnea hypopnea index ≥ 5/h . Fifty gender ,age matching healthy people were selected as control group . Blood pressure and general clinical characteristics were collected and echocardiography was performed next morning . On the basis of left ventricular mass index , relative wall thickness ,left ventricular end‐diastolic diameter ,patients were divided into 6 groups :normal geometry ( NG) ,concentric remodeling ( CR) ,eccentric non dilated hypertrophy ( ND‐EH ) ,concentric non dilated hypertrophy ( ND‐CH ) ,eccentric dilated hypertrophy ( D‐EH ) ,and concentric dilated hypertrophy ( D‐CH) .Full volume images at apical four‐chamber view were collected . Right atrial volume‐time curve , RA maximum volume ( RAVmax ) , RA minimum volume ( RAVmin ) , RA pre‐contraction volume ( RAVpre‐a) were analyzed with QLab workstation . Following parameters including RA total emptying volume ( RA TotEV ) , RA total emptying fraction ( RA TotEF ) , RA passive emptying volume ( RA PassEV ) ,RA passive emptying fraction ( RA PassEF) ,RA active emptying volume ( RA ActEV ) ,RA active emptying fraction ( RA ActEF) were calculated . All structural parameters were corrected by BSA . Results①RA structural parameters :compared with control and NG groups ,RAVmax ,RAVmin ,RAVmin/BSA , RAVpre‐a and RAVpre‐a/BSA were increased in ND‐EH ,ND‐CH and D‐( CH+ EH) groups ( P ＜0 .05) . Compared with control ,NG and CR groups ,RAVpre‐a and RAVpre‐a/BSA were increased in ND‐EH ,ND‐CH and D‐( CH + EH ) groups , RAVmax , RAVmax/BSA , RAVmin , RAVmin/BSA , RAVpre‐a and RAVpre‐a/BSA were increased in ND‐CH and D‐( CH+EH ) groups( P ＜0 .05) . Compared with control , NG ,CR and ND‐EH groups ,RAVmax ,RAVmax/BSA ,RAVpre‐a and RAVpre‐a/BSA were increased in ND‐CH ,D‐( CH+EH) groups ,RAVmin and RAVmin/BSA were increased in D‐( CH+ EH ) group ( P ＜0 .05) . Compared with control ,NG ,CR ,ND‐EH and ND‐CH groups ,RAVpre‐a and RAVpre‐a/BSA were increased in D‐( CH + EH ) group ( P ＜ 0 .05 ) . ② RA reservoir function parameters :compared with control ,NG and CR groups ,RA TotEV was increased in ND‐CH and D‐( CH+ EH ) groups ( P ＜0 .05 ) . Compared with control ,NG ,CR and ND‐EH groups ,RA TotEV was increased in D‐( CH + EH ) group ( P＜0 .05) . ③ RA conduit function parameters :compared with control ,NG and CR groups ,RA PassEF was decreased in ND‐EH ,ND‐CH and D‐( CH + EH ) groups ,RA PassEV was decreased in ND‐CH and D‐( CH+EH) groups( P ＜0 .05) . Compared with control ,NG ,CR and ND‐EH groups ,RA PassEV was decreased in D‐( CH+EH) group ,RA PassEF was decreased in ND‐CH and D‐( CH+ EH ) groups ( P ＜0 .05) . ④ RA pump function parameters :compared with control ,NG and CR groups ,RA ActEF were increased in ND‐CH and D‐( CH+EH) groups ( P ＜0 .05 ) ; Compared with control ,NG ,CR and ND‐EH groups ,RA ActEV was increased in ND‐CH and D‐( CH+EH) groups ( P ＜0 .05) . Conclusions Different left ventricular geometric patterns have different RA structure and function in OSAS ,patients with ND‐CH and D‐( CH + EH ) have worse RA structure and function . T he results of this study suggested that the clinical need to pay attention to the RA structure and function of OSAS patients with dilated LV H .

Objective:To investigate the risk factors of long-term mortality in patients with acute pulmonary embolism (APE) and to explore the predictive value of echocardiography.Methods:A total of 109 APE patients admitted in First Hospital of Shanxi Medical University between December 2010 and November 2014 were enrolled in this study. APE was diagnosed by computed tomography pulmonary angiography (CTPA) or ventilation-perfusion pulmonary scintigraphy. Transthoracic echocardiography (TTE) parameters and clinical parameters within 48 h of onset were collected. All the patients were treated with standard anticoagulation, thrombolysis, or thrombectomy. Regular follow-up was carried out, with the average follow-up period of (7.20±1.04) years. The patients were divided into survival group and fatal group according to their follow-up results. The echocardiographic parameters and primary biochemical laboratory parameters within 48 h after onset were compared between the survival group and the fatal group by t test or χ 2 test. Cox regression analysis was conducted to analyze the influencing factors of long-term prognosis of patients with APE. Survival analysis was performed in patients with echocardiographic assessment of right ventricular (RV) enlargement and/or dysfunction and without RV enlargement and/or dysfunction by Kaplan-Meier method, and the survival curves were plotted. The comparison between the two groups was performed by log-rank test. Results:The average follow-up period was (7.20±1.04) years. Fourteen patients were lost in the follow-up, and 95 patients were included in the final analysis, among whom 58 survived and 37 died with a fatality rate of 39.0%. Cox regression analysis showed that age ( HR=2.32, 95% CI:1.31-4.13, P=0.004), malignancy ( HR=6.49, 95% CI:2.32-18.14, P<0.001), right atrial (RA)/left atrial (LA) area ratio ( HR=2.01, 95% CI:1.16-3.48, P=0.013), RV enlargement and/or dysfunction ( HR=5.90, 95% CI: 1.45-23.94, P=0.013), Charlson comorbidity index (CCI) score ( HR=1.75, 95% CI: 1.04-2.96, P=0.035), low oxygen saturation ( HR=1.70, 95% CI:1.14-2.53, P=0.009) were independent risk factors associated with long-term mortality in patients with APE. Kaplan Meier survival curve analysis showed that the cumulative survival rates of patients with RV enlargement and/or dysfunction at 1, 3, 5 and 7 years were 92.8%, 66.7%, 59.4% and 52.2% respectively, and those without RV enlargement and/or dysfunction were 96.2%, 92.3%, 84.6% and 84.6%,respectively (log rank test, P=0.006). Conclusions:Patients with APE have high long-term mortality. Early echocardiographic RV enlargement and/or dysfunction, RA/LA area ratio, age, malignant tumor, CCI score and low oxygen saturation are independent risk factors related to long-term mortality in patients with APE. Ultrasound evaluation of patients with RV enlargement and/or dysfunction has a certain value in predicting long-term mortality in patients with pulmonary embolism.

Objective:To investigate the correlations between serum E selectin, intercellular adhesion molecule 1 (ICAM-1), vascular cell adhesion molecule 1 (VCAM-1) and left ventricular geometry and function in patients with obstructive sleep apnea syndrome (OSAS) combined with prehypertension (pre-HT).Methods:A total of 462 patients with pre-HT and OSAS diagnosed by polysomnography (PSG) in the sleep monitoring unit of the Department of Respiratory and Critical Care Medicine at the First Hospital of Shanxi Medical University from July 2019 to July 2022 were restrospectively analysed, and 52 patients with pure pre-HT (pre-HT group) and 73 patients with pure OSAS (OSAS group) in the same period were selected as the control group. OSAS and pre-HT patients were divided into four groups according to left ventricular geometry: normal geometry (NG) group, concentric remodeling (CR) group, eccentric hypertrophy (EH) group and concentric hypertrophy (CH) group. The general clinical data, PSG parameters, blood biochemical parameters and left ventricular structure and function parameters were compared among the six groups. Pearson correlation and multivariate Logistic regression were used to analyze the correlation between E-selection, ICAM-1, VCAM-1, general clinical data, PSG parameters, blood biochemical parameters with left ventricular geometry and function.Results:①Serum E selectin, ICAM-1, and VCAM-1 concentrations increased sequentially from the NG, CR, and EH to CH groups, with the most significant increase in CH group (all P<0.05). In addition, there were statistically significant differences in age, body mass index (BMI), OSAS severity, neck circumference, waist circumference, systolic blood pressure (SBP), diastolic blood pressure (DBP), Glu, lowest oxygen saturation (Lowest-SaO 2), mean oxygen saturation (Mean-SaO 2), percentage of time with oxygen saturation below 90% of total sleep time (T90), left ventricular end-diastolic diameter (LVEDd), interventricular septal thickness (IVST), left ventricular posterior wall thickness (LVPWT), left ventricular mass index (LVMI), relative ventricular wall thickness (RWT), left ventricular ejection fraction (LVEF), peak mitral early diastolic flow velocity/peak mitral late diastolic flow velocity (E/A), E wave deceleration time (DT), A wave duration (AD), and isovolumic relaxation time (IVRT), and overall long-axis longitudinal strain (GLS) and so on(all P<0.05). ②Pearson correlation analysis showed that E selectin was negatively correlated with LVEF, E/A, e′, E/e′, IVRT, and GLS ( r=-0.236, -0.131, -0.224, -0.215, -0.285, -0.336; all P<0.05). ICAM-1 was negatively correlated with LVEF, E, E/A, e′, IVRT, and GLS( r=-0.130, -0.129, -0.104, -0.351, -0.252, -0.259; all P<0.05). VCAM-1 was negatively correlated with E, e′, and IVRT ( r=-0.132, -0.312, -0.387; all P<0.001). ③Multifactorial logistic regression analysis showed that E selectin and VCAM-1 were independently correlated with EH (β=1.139, OR=3.124, P=0.030; β=1.288, OR=3.626, P<0.001) and with CH (β=1.178, OR=3.248, P=0.013; β=1.108, OR=3.028, P<0.001). Conclusions:E selection and VCAM-1 were independently correlated with hypertrophic left ventricular geometry, suggesting that E selectin and VCAM-1 may be involved in the process of abnormal left ventricular structure and function in patients with OSAS combined with pre-HT.