Intraincisional antibiotic in addition to systemic antibiotic treatment fails to reduce wound infection rates in contaminated abdominal surgery

One hundred ninety patients with peritonitis at the time of abdominal surgery were allocated at random to systemic antibiotic treatment alone or systemic antibiotic treatment combined with topical application of antibiotics in the wound at the time of wound closure. The overall wound infection rate was 17 percent without significant difference between the two treatment groups (P>0.80).     

不同湿热环境下颅脑火器伤死亡因素分析

目的　研究高温高湿环境下颅脑火器伤后生命体征变化特点及死亡因素。　方法　杂种猫 3 2只随机分为 4组 ,火器伤后分别放入A (2 5℃、相对湿度 50 % )、B (3 5℃、相对湿度85% )、C(3 8℃、相对湿度 90 % )、D(40℃、相对湿度 95% )四种环境中。每隔 10min记录一次血压、脉搏、呼吸频率及体温 ,到 6h时结束实验。　结果　常温枪伤组实验过程中生命体征稳定 ,随着温度及湿度的增加 ,各组动物相同时相点的体温、呼吸及心率均明显不同 (P <0 .0 5)。A组、B组动物在伤后 6h内均无死亡。C组 1.5h开始死亡 ,至 5h动物全部死亡 ,平均生存时间为 3 .4h。D组 0 .5h开始死亡 ,至 2 .5h动物全部死亡 ,平均生存时间为 2 .0h。　结论　高温高湿环境对颅脑火器伤时的生命体征变化和死亡率影响显著     

重组生长激素对腹部大手术患者血浆蛋白的影响

目的研究重组人生长激素（rhGH）对腹部大手术患者术后代谢、免疫功能和术后并发症的影响。方法回顾性分析腹部大手术患者79人，其中37人为治疗组，42人为对照组。治疗组手术后第2天开始，每天皮下注射思真（重组人生长激素，瑞士雪兰诺公司生产）8U，对照组给予安慰剂（生理盐水），共用7d；分别在治疗前，治疗后3、7、10、14d检测血浆白蛋白、前白蛋白及转铁蛋白水平。记录切口愈合情况及术后并发症情况。结果（1）治疗前，两组白蛋白、前白蛋白及转铁蛋白水平差异无统计学意义（P〉0．05）；治疗后3d，两组白蛋白水平差异无统计学意义（P〉0．05），且均低于治疗前；治疗组前白蛋白、转铁蛋白均高于对照组（P〈0．05）；治疗后7d，治疗组3项指标均高于对照组。（2）治疗组切口愈合情况明显优于对照组（P〈0.05）。（3）治疗组术后并发症发生率明显低于对照组（P〈0．05）。结论腹部大手术患者术后应用重组人生长激素可以提高免疫功能，促进切口愈合，减少术后并发症的发生。     

Closed suction drainage after orthopaedic surgery: evidence versus practice

Abstract Closed suction drainage systems are commonly used in orthopaedic surgery, particularly in joint arthroplasty. The rationale for the use of drains is a theoretical reduction of wound haematomas and infection. However the benefit of using drains after total hip or knee arthroplasty is controversial. Several reports have shown that the use of drains does not reduce infection and morbidity and is an unnecessary and potentially dangerous practice. In fact most studies highlighted that at best their use appears to make no difference to important clinical outcomes. Recently a metaanalysis raised the question about the usefulness of closed suction drainage again, concluding that it has no major benefits. The purpose of this study was to review the evidences available concerning the utility of closed suction drainage outlining that this practice is not supported by clinical evidence.     

铜绿假单胞菌QS系统对大鼠皮肤溃疡面生物被膜形成的影响

目的 对比野生型铜绿假单胞菌及LasI和RhlI突变株铜绿假单胞菌感染大鼠皮肤溃疡创面后生物被膜形成的差异,探讨铜绿假单胞菌LasI及Rhll基凶在活体生物被膜形成中的作用.方法 制备大鼠皮肤溃疡模型,共60个创面,分成3组,前两组分别接种导人绿色荧光蛋白(GFP)质粒的野牛型铜绿假单胞菌及LasI和RhlI突变株铜绿假单胞菌,另一组不接种细菌作为空白对照组.分别于术后1、3 7 10 d切取标本,每个标本分成两等份,分别进行细菌学检测和光学显微镜及荧光显微镜观察二组上皮化及生物被膜形成情况.结果 除了第7天外,在第1、3、10天感染了野牛型铜绿假单胞菌创而组织内细菌数多于LasI及RhlI缺陷组的细菌数.空白对照组细菌数则更少,且野生组上皮化较慢,生物被膜较厚.结论 活体内LasI及RhlI基因缺损的铜绿假单胞菌生物被膜形成能力及组织感染能力均低于野生株.     

Baclofen Pretreatment Attenuates the Suppressant Effect of Intraperitoneal Administration of Cholecystokinin (CCK) on Food Intake in Rats

The aim of this study was to investigate whether pretreatment with the GABAB receptor agonist baclofen could prevent the inhibitory effect of systemically administered cholecystokinin (CCK) on food intake in rats. Baclofen (2 mg/kg, SC) administered 60 min prior to IP injection of CCK (5 μg/kg) significantly attenuated the suppressant effect of the peptide on feeding in nondeprived rats (Experiment 1) and rats that had been deprived of food for 22 h (Experiment 2). Baclofen had no significant effects on food intake when administered alone. The results suggest that the inhibitory effect of exogenous peripheral CCK on food intake may be dependent on an interaction with a GABAB-receptor mediated mechanism. Copyright © 1996 Elsevier Science Inc.     

重组人酸性成纤维细胞生长因子促进创伤愈合的研究

目的：研究重组人酸性成纤维细胞生长因子（rh-aFGF)对兔创伤的促愈合作用。方法：采用兔背部刀割伤模型，将rh-aFGF溶液隔日一次滴注于创面，用创面照像、透明膜描记称量法记录伤后第4、8、12、16天创面面积，用注水法测量伤腔容积，伤后第8、16天取创面组织，观察创面的病理学变化，包括肉芽组织生长与再上皮化情况。结果：rh-aFGF可明显加速兔皮肤创伤的愈合，使创面面积明显缩小（P＜0．05），使伤腔容积明显减少（P＜0．05）。组织学检查：rh-aFGF组创面伤后8天成纤维细胞生长活跃、数量多，其毛细血管胚芽与成纤维细胞数量显著多于对照组；伤后16天，创面收缩与再上皮化明显，新生上皮向创面中心爬行较快。结论：rh-aFGF对兔背部刀伤创面有明显的促修复作用。     

纳洛酮治疗急性重型颅脑损伤

我院自2001年1月-2001年12月,共应用盐酸纳洛酮治疗急性中、重型颅脑损伤35例,取得一定的疗效,现报告如下.……     

Quantification of risk factors in Hospital infection at a surgical service

In this paper we have analyzed several risk factors for developing nosocomial infections at a Surgical Service of the Hospital Clinico Universitario San Cecilio 2>, based on a retrospective follow-up program designed specifically for this study. Of all patients admitted to the Service from January 1 to June 17, 1987, we examined the following variables: age, sex, cause of admission, emergency or non-emergency admission, operation and related variables. The overall rate of nosocomial infections was 16.46%. The most significant risk factors we found were operation , which had a linear correlation coefficient of '0.929 (p < 0.01) with hospital infection when stratified by its lenght, advanced age ( >60 years old), especially in non-operated patients, and chemoprophylaxis. Such risk factors were ascertained taking into account the confounding effect produced by the variables studied in this survey.Corresponding author.     

In vitro Virulenz wundinfizierender Staphylokokken-Isolate von schwerbrandverletzten Patienten

Zusammenfassung 30Staphylococcus aureus Stämme von drittgradig verbrannten Patienten wurden hinsichtlich ihrer Fähigkeit zur Hämolysingenerierung und ihres Vermögens zur Histaminfreisetzung aus Mastzellen (RPMC) untereinander verglichen. Die bakteriellen Kulturüberstande von 8 Stämmen aus Wundbiopsien zeigten signifikant niedrigere in vitro Aktivitäten als die übrigen Staphylokokken-Kulturüberstände. Bei dem Vergleich der in vitro Aktivitäten der gewaschenen Bakterienzellen ergab sich ein umgekehrtes Verhältnis. Diese Befunde zeigen, daß beiS. aureus Isolaten, welche zum Zeitpunkt einer invasiven Brandwundeninfektion isoliert werden können, die mikrobiellen Pathogenitätsfaktoren an die Bakterienzelle gebunden bleiben.

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In vitro measurement of pathogenicity ofStaphylococcus aureus isolated from heavily burned patients

Summary The hemolysin and histamine releasing activity of 30S. aureus strains isolated from third degree burns of heavily burned patients was detected. The culture supernatants (cs) ofStaphylococcus aureus isolated during episodes of invasive burn wound infection displayed significantly lower amounts of hemolysin and histamine releasing activity as compared to cs of bacteria isolated when no sign of septicemia was present. In contrast, when washed bacterial cells were analysed, a reversed ratio could be observed. These data clearly indicate that in strains isolated during invasive burn wound infection pathogenicity factors remain attached to the bacterial surface of the staphylococci investigated.

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