Bacteriologic Study and Antibiotics Sensitivity of Acute Appendicitis Treated with Laparoscopic Appendectomy

PURPOSE: This study was designed to evaluate the bacteriological characteristics and antibiotics sensitivity in acute appendicitis. METHODS: The microbiologic culture and antibiotics sensitivity tests were done on 165 patients who underwent laparoscopic appendectomy under the diagnosis of acute appendicitis. The postoperative complications were also checked. The microbiologic and clinical results were compared between perforated and non-perforated groups. RESULTS: The most common organism cultured from the periappendiceal fluid was Escherichia coli (51.2%), followed by Enterobacter (16.2%) and Pseudomonas (8.9%). In the antibiotics sensitivity test, ciprofloxacin and levofloxacin were highly susceptible. Ceftriaxone and cefotaxime were also highly susceptible. Piperacillin/tazobactam, imipenem and meropenem were very highly susceptible. The complication rate of perforated appendicitis group (17.9%) was higher than that of the non-perforated appendicitis group (7.1%) (P<0.001). A surgical drain was used more frequently in perforated group (23% vs 84.6%, P<0.001). The mean in-patient days were longer in the perforated group (5.7 vs 7.2 days, P<0.001). In the patients with infectious wound complication, antibiotic resistance was more prominent in the non-perforated group than in the perforated group. CONCLUSION: In the perforated appendicitis group, more precise and careful procedure was required. In the non-perforated appendicitis group, more prudent use of the available antibiotics to conserve valuable therapeutic resources and improved infection control to limit the spread of resistant organisms was required.

Antibiotics Susceptibility Analysis of Sixty-two Clinical Streptococcus pneumoniae Isolates / 中华医院感染学杂志

OBJECTIVE To investigate the in vitro antimicrobial susceptibility of Streptococcus pneumoniae and guide the rational use of drug clinically. METHODS We performed statistical analysis of the susceptibility of 62 strains of S.pneumoniae isolated in our hospital from May 2007 to Aug 2008. RESULTS S.pneumonia e could be isolated from various specimens,most of them were isolated from sputum(84.0%).S.pneumoniae could be detected from many hospital wards,but more strains isolated from pediatric(67.8%) and respiratory(11.4%) departments.A total of 67.7% of S.pneumoniae isolates were penicillin non-susceptible,the resistance prevalence to tetracycline was 87.1%,to erythromycin 79.0% and to trimethoprim/sulfamethoxazole 49%,while they were highly susceptible to ofloxacin(90.3%),vancomycin(91.9%),levofloxacin(95.2%),moxifloxacin(96.8%) and rifampicin(98.4%),and more strains showed multi-resistance from penicillin non-susceptible isolates. CONCLUSIONS The resistance to penicillin of S.pneumoniae is serious in our hospital.The tetracycline and erythromycin are not the best ckoice in treating S.pneumoniae infection,and the new fluroquinolones show strong activity against S.pneumoniae.

Population analysis as a useful method for isolation of herogeneous methecillin-resistant staphylococcus aureus / 临床检验杂志

Objective To develop a new method for the isolation of heterogeneous methecillin-resistant staphylococcus aureus(hetero-MRSA)and study its application in clinical practice.Methods Both the methods of disc agar diffusion and population analysis were used to detect hetero-MRSA from 60 strains of methecillin susceptible staphylococcus aureus(MSSA) which were identified by VITEK AMS.Results Twelve subclones of hetero-MRSA were isolated by population analysis,while only 2 subclones were identified by disc agar diffusion.Conclusion Population analysis is an effective method for the isolation of hetero-MRSA,and its detection rate is higher than that of disc agar diffusion.The heterogeneous methecillin resistance of MSSA should not be overlooked by medical workers.

Staphylococcus Resistance in Nosocomial Infection: An Analysis / 中华医院感染学杂志

OBJECTIVE To study the staphylococcus infection and the drug resistance among the outpetients and the inpatients, and to provide information for the clinical treatment.METHODS To cultivate and isolate bacteria according to the Clinical Laboratory Operation Regulation.Bacteria were identified with the automated analyzer VITEK-60.made by Bio-Merieux Company in France.The drug susceptibility was one with the method of single split agar diffusion.RESULTS Totally 159 strains of Staphylococcus were isolated from the outpatients,(46.1%) of which were MRSA.Most of the infection were caused through genital tract;390 strains of(Staphylococcus) were(isolated) from the inpatients,87.1% of which were MRSA.Most of the infection were caused through respiratory tract.Most of MSSA resisted to penicillin,but MRSA were sensitive to vancomycin and(teicoplanin.) (CONCLUSIONS) Preventing the spread of the MRSA is very important to the control of the nosocomial(infection).As far as the infective situation,most of the outpatients are infected through genital tract;while most of the inpatients are infected through respiratory tract.As far as the drug susceptibility,vancomycin is the best antibiotics,the next is teicoplanin.It is necessary to use combined drugs for the MRSA infection.

Detection of Mycoplasma in Vaginal Secretions and Drug Resistance / 中华医院感染学杂志

OBJECTIVE To understand infection status and drug resistance of Ureaplasma urealyticum(Uu) and Mycoplasma hominis(Mh) in female genitourinary tract in the local region.METHODS The results of mycoplasma cultivation and susceptibility tests of female vaginal secretions specimen in 409 cases during from Sep 2007 to Apr 2008 were analyzed retrospectively.RESULTS Among 409 cases,the positive rates were mycoplasma cultivation(57.2%).Uu(72.6%),Mh(3.4%) and combined infection(23.9%).Drug resistance of Uu to ten kinds of common antibiotics showed that minocycline