Prevalence,pattern, sensitivity and resistance to antibiotics of different bacteria isolated from port site infection in low risk patients after elective laparoscopic cholecystectomy for symptomatic cholelithiasis at tertiary care hospital of Kashmir

The aim of this study was to determine specific pattern of port site microbial colonisation, sensitivity and resistance to different antibiotics of bacteria isolated from port site infection (PSI) in low risk patients after elective laparoscopic cholecystectomy in surgical wards at tertiary care hospital of Kashmir. This is a prospective study. The study included 675 consecutive patients of postoperative PSI after elective laparoscopic cholecystectomy for symptomatic cholelithiasis over a period of 12 months. Culture swabs were taken from port sites with signs of PSI and transported to the microbiology laboratory. The positive swab cultures were subjected to antibiotic susceptibility test. The data obtained was analysed by using appropriate statistical analytical tests. The incidence of PSI after elective laparoscopic cholecystectomy is 6·7%. The commonest organism responsible for PSI is pseudomonas, 19 (42·2%) cases. Most of the strains of organisms isolated were resistant to commonly used antibiotics in the hospital,pseudomonas was found 100% resistant to the combination of ampicillin + sulbactum and ceftriaxone and it was sensitive to imipenem, amikacin and vancomycin in 89·47,57 and 52·63% of cases respectively. Our study will be helpful in choosing effective empirical prophylactic antibiotic therapy in cases of elective laparoscopiccholecystectomy and will have a great impact on morbidity and mortality in them because of PSI.     

The role of the computerized tomography scanner in the cross-transmission of carbapenem-resistant Acinetobacter baumannii between hospitalized patients

ObjectiveTo assess the role of the computerized tomography (CT) scanner in cross-transmission of carbapenem-resistant Acinetobacter baumannii between hospitalized patients undergoing CT scan.MethodsA single-centre retrospective observational analysis of inpatients undergoing CT scans. Patient-unique CT scans were defined as ‘index cases’ (patients undergoing CT scan with carbapenem-resistant Acinetobacter baumannii (CRAB) colonization documented during the previous 60 days), ‘incident cases’ (patients found colonized with CRAB within 14 days following CT scan), and ‘negative cases’ (negative for CRAB before and after CT scan). CRAB acquisition was analysed by time interval between CT scan and CT scan of the prior index-case patient.ResultsAmongst 73 047 CT scans performed over 5 years, 4834 scans were performed within 12 hours of an index case. CRAB acquisition was detected in 20 patients (incident cases), including 16/2725 (5.8/1000 scans) who underwent CT scan within 6 hours of an index-case CT scan and 4/2109 (1.9/1000 scans) who had their CT scan 7–12 hours after the CT scan of an index-case patient (p 0.033, risk ratio 3.1, 95%CI 1.03–9.25). Patient characteristics for the two time periods were similar. While not the only significant predictor of CRAB acquisition (others included age and length of hospital stay prior to the CT scan), the time elapsed from an index case remained a significant predictor for CRAB acquisition on multivariate analysis (OR 0.84, 95%CI 0.74–0.95, p 0.007).ConclusionsPerforming a CT scan within 6 hours of a CT scan performed in a CRAB-positive patient was an independent predictor of CRAB acquisition, approximately tripling the risk. This probably reflects poor infection control practice in the CT suite.     

Current Treatment of High Grade Osteosarcoma of the Extremity: Review

Abstract

The authors review their lengthy experience in treating high grade osteosarcoma of the extremity. During the past 20 years many advances have been made in treating high grade osteosarcoma of the extremity. Twenty years ago, in spite of amputation, most patients with this tumor died, whereas today most are cured and amputation is avoided. These advances are mainly due to the development of effective adjuvant and neoadjuvant chemotherapy regimens. This review reports on the progress and controversies in the treatment of osteosarcoma.     

用于HIV新发感染检测的亲和力方法的研究进展

艾滋病病毒(HIV)新发感染率的估算方法主要有三种:队列研究、数学模型法和实验室方法。其中利用实验室方法检测横断面样本,从而估算新发感染率,已经成为HIV新发感染率重要的估算方法之一,越来越受到重视。在所有实验室检测方法中亲和力方法出现较早,发展历史较长,从20世纪90年代前后至今,已有20多年的研究历史,最近几年更是有了较大的发展。文章通过对亲和力方法的原理、亲和力指数方法用于HIV新发感染检测的现场应用研究,以及亲和力方法的最新研究进展,限制性抗原亲和力方法的研发和初步评价三部分内容的介绍,综述亲和力方法用于HIV新发感染检测的最新进展。     

一清胶囊在肺结核合并革兰阴性菌感染中的成本-效果分析

目的 对内毒素检测阳性的肺结核患者实施不同治疗策略,分析不同策略的成本-效果,为利用一清胶囊治疗革兰阴性菌(G)感染提供理论和经济学依据.方法 120例内毒素检测阳性的肺结核患者随机分为治疗组和对照组,治疗组同时接受一清胶囊联合常规的抗菌治疗,对照组仅进行常规的抗菌治疗.分别记录患者的CRP的复常时间、体温复常时间、内毒素转阴时间以及影像的感染情况改善程度进行成本-效果分析.结果 治疗组的CRP复常时间、体温复常时间和内毒素转阴时间均明显短于对照组.两组患者均未观察到空洞闭合,但治疗组47例患者的结核病灶有吸收好转(有效率78.3％)；对照组33例患者的结核病灶有吸收好转(有效率55.0％),两组比较差异有统计学意义(x2=4.97,P＜0.05).成本-效果分析表明对照组疗效较差且治疗成本明显偏高(P=0.013).结论 一清胶囊与常规抗菌治疗之间具有协同作用,能明显缩短病程和住院时间,两者联用成本效果更好,具有重要的经济价值.     

The Relationship of CCR5 Antagonists to CD4+ T-Cell Gain: A Meta-Regression of Recent Clinical Trials in Treatment-Experienced HIV-Infected Patients

Abstract

Purpose: Lower CD4+ T-cell counts are related to increased morbidity and mortality despite virologic suppression. CCR5 antagonists are associated with robust CD4+ T-cell responses. We examined the relationship of CCR5 antagonists to CD4+ T-cell gains. Design: Meta-regression of recent phase 2–3 trials evaluating new antiretroviral agents in treatment-experienced subjects. Methods: We analyzed the relationship of CCR5 antagonists to CD4+ T-cell count increase 24 weeks after initiating the new regimen using a linear model with generalized estimating equations controlling for differing rates of virologic suppression. Each treatment group was treated as a data point weighted by sample size. Results: We included 46 treatment groups from 17 trials (11 groups from 5 trials used CCR5 antagonists). Controlling for average baseline HIV-1 RNA and proportion of subjects achieving HIV-1 RNA <50 copies/mL, use of a CCR5 antagonist was associated with an additional significant CD4+ T-cell gain of +30/μL (95% CI, 19–42) at 24 weeks compared to treatment groups not using a CCR5 antagonist. Conclusions: Use of a CCR5 antagonist was associated with an enhanced CD4+ T-cell count response independent of virologic suppression. This observation supports further evaluation of CCR5 antagonists in patients with discordant immunologic and virologic responses to ART.