Ear Diseases ; congenital ; epidemiology ; Ear, External ; abnormalities ; Ear, Middle ; abnormalities ; Female ; Humans ; Male

Objective To investigate the efficacy and safety of carvedilol in patients with chronic heart failure (CHF).Methods Forty-six patients with CHF were randomly divided into carvedilol group (n=26) and control group (n=20) on the basis of standard therapy including digitalis, diuretics and ACEI. Before and after treatment, NYHA class, echocardiography and adverse reaction were observed. Results The mean dose of carvedilol was titrated to 25.14?3.05mg/day. After treatment, NYHA class was improved in both groups. Left ventricular end-diastolic diameter (LVEDD) measured by echocardiography reduced [(58.79?8.99)mm vs (64.68?10.12) mm,P

Objective To investigate the effects of propofol on the changes in myocardial Toll-like receptor 4 (TLR-4)and TNF-αand NF-κb protein expressions in ischemia-reperfusion injury (I/R).Methods Thirty healthy male SD rats weighing 250-320 g were randomly divided into 3 groups (n=10 for each):Group A,sham operation;Group B,I/R;and Group C,propofol + I/R.In Groups B and C myocardial I/R was induced by occlusion of the left anterior descending artery (LAD)for 30 min,followed by 120 min reperfusion.In Group C propofol was given intravenously 1 0 min before myocardial ischemia,followed by continuous infusion of propofol at 5 mg/(kg·h)until the end of 120 min reperfusion.In Groups A and B normal saline instead of propofol was given. The myocardial tissues were taken at the end of 120 min;ultrastructural changes of myocardial cells were observed under X-ray electron microscope and the expressions of TLR-4 mRNA as well as TNF-αand NF-κb protein were determined.Results Ultrastructural observation under electron microscope showed significantly worsened damage in myocardial tissue structure and mitochondria in Groups B and C compared with Group A.The myocardial expressions of TLR-4 and TNF-αand NF-κb protein were significantly higher in Groups B and C than in control Group A.The myocardial expressions of TLR-4 and TNF-αand NF-κb protein were down-regulated in Group C compared with Group B.Conclusion Intravenous injection of propofol can protect against myocardial damage.Propofol can suppress the increase in myocardial TLR-4 and TNF-αand NF-κb protein expressions induced by I/R.

Objective To evaluate the value of MSCT scores on surgery method selection and its difficulty estimation for hepatic cystic echinococcosis. Methods Based on the CT features of hepatic cystic echinococcosis ( HCE), an integral system including 7 items wasestablished. Images of preoperative CT examination performed on 71 cases of hepatic cystic echnococcosis were retrospectively analyzed by the integral system and compared with actual surgical. Total 93 cystic lesions were divided into 3 groups based on CT scores: Group A suitable for total cystectom (0 to 5 score), Group B suitable for subtotal cystectom (6 to 10 score), and Group C suitable forendocystectomy ( ≥11 scores, or4 score in one item). Spearman rank correlation was used to analyze the relationship between WHO classification of cystic echinococcosis and actual surgery methods, the relationship between operation mode forecasted by CT scores and actual surgery methods, the relationship between vessel scores of cyst and actual surgery methods, and that between biliary score of cyst and actual surgery methods. Fisher exact test and Chi-square test were used to evaluate the incidence of residual cavity in patients with different biliary scores. Results Thirty nine cysts got 0 to 5 scores, 45 cysts got 6 to 10 scores and 9 cysts got more than 10 scores. Total cystectom was performed on 30 cysts, subtotal cystectomy on 40 cysts and performed endocystectomy on 23 cysts, actually. Actual operation methods were correlated with that predicated by CT scores ( r = 0. 741, P ＜ 0. 01 ), and with vessels score and biliary score (r = 0. 587,0. 327 respectively,P ＜ 0. 01 ). The higher the biliary score, the higher the incidence of postoperative biliary tract complications. Conclusions Preoperative CT scoring was an easy and objective way to accurately predict the surgery methods and its difficulty for hepatic cystic cnechnococosis.

Adult ; Aged ; Aged, 80 and over ; Carcinoma, Squamous Cell ; pathology ; Female ; Humans ; Laryngeal Neoplasms ; pathology ; Lymphatic Metastasis ; pathology ; Lymphatic Vessels ; pathology ; Male ; Middle Aged ; Neck ; pathology ; Neoplasm Staging

With the approaches of lifecycle, structurizing and prototype applied, the dynamic management subsystem for medical equipment is developed, and thus the management level and economic benefit can be improved.

Objective To determine the median effective dose(ED50)of etomidate inhibiting responses to endotracheal intubation when combined with dexmedetomidine in the patients with obstructive jaundice. Methods American Society of Anesthesiologists physical status Ⅱ or Ⅲ patients with obstructive jaundice,aged 45-63 yr,with body mass index of 18-30kg/m2,scheduled for elective operations under general anesthesia,were divided into control group(group C)and dexmedetomidine group(group D)using a random number table. At 15min before induction of anesthesia,normal saline 0.1 ml/kg was infused intravenously in group C,and dexmedetomidine 0.4 μg/kg was infused intravenously in group D. Anesthesia was induced with midazolam 0.05 mg/kg,fentanyl 4 μg/kg,etomidate and cisatracurium 0.15 mg/kg. The ED50 of etomidate was determined using Dixon′s up-and-down method. Etomidate was injected intravenously at the initial dose of 0.2 mg/kg in the first patient in each group. Each time the dose increased/decreased in the next patient according to whether or not the increase in mean arterial pressure and/or heart rate ≥ 20% of the baseline value within 3min after endotracheal intubation. The ratio between the two successive doses was 1.1. The number of patients in whom inhibition was effective or ineffective was recorded,and the ED50 and 95% confidence interval of etomidate inhibiting responses to intubation were calculated using Probit analysis. Results The ED50 (95% confidence interval)of etomidate inhibiting responses to intubation was 0.185(0.162-0.201)mg/kg in group C,the ED50(95% confidence interval)of etomidate inhibiting responses to intubation was 0.129(0.093-0.143)mg/kg in group D,and there was significant difference between the two groups(P<0.05).Conclusion When combined with dexmedetomidine,the ED50 of etomidate inhibiting responses to endotracheal intubation is 0.129 mg/kg in the patients with obstructive jaundice.

OBJECTIVE: To establish a HPLC - UV method for determination of hydroxycamptothecin(HCPT) in rabbit tissues (liver, kidney, stomach, lung, spleen, heart, intestine) .METHODS: After homogenization, tissue samples and internal standard, eamptothecine, were precipitated with CH3OH-CH3CN( 1 : 1) and then centrifugalized.20?l of supernatant was injected and measured by HPLC - UV method.The chromatographic column was Lichrospher C18 column: (250mm ? 4.6mm, 5?m), CH3CN - 0.075mol/L NH4AC buffer(pH6.4) (30 : 70, contain 5mol/L tyiethylamine) served as mobile phase with flow rate of 1.0ml/ min .Detection wavelength was 384nm .RESULTS: The retention time of hydroxyeamptothecin was 4.5min.A good linearity was shown in the concentration range of (40- 1 600)ng/ml .The recovery was between 95.24% and 107.58% . The intra day RSD was less than 7.70% and the inter - day RSD was less than 6.69% .CONCLUSION: This method is simple,pratical and accurate.It could be applied to pharmacokinetic study of hydroxyeamptothecin.

Objective To explore the relationships between erythropoietin( EPO), endothelin - 1 (ET - 1) and perinatal anoxia. Method ELISA was used to test cord blood EPO and ET-1 in 54 high risk neonates as subjects and 14 healthy neonates as controls.Results The cord blood EPO levels in amniotic fluids turbid Ⅲ degree group and group eclampsia/pre - eclampsia were higher than those in control group (t= 4.0842,3 680 allP

Objective To investigate the factors for retinopathy in premature infants. Methods Ophthalmologic mydri was conducted in premature infants and acording to the international classification of ROP, they were diagnosed as ROP. The risk factors of the incidence of ROP were statistically and respectively analyzed. Results Among total of 47 patients, 11 patients were found retinopathy of prematurity. Conclusion The body weight is lower, the gestation is shorter, incidence of ROP is the higher.