Clin Infect Dis:复发性艰难梭状芽胞杆菌感染的管理

2015-02-04 张振江 编译 医学论坛网

粪微生态移植是复发性艰难梭状芽胞杆菌感染最具成本效益的疗法。不论是通过鼻胃管还是结肠镜给药,使用经筛选的健康捐献者的冷冻粪便都是有效的。 在首次发作应用抗菌药物治疗后,30%的患者复发艰难梭状芽胞杆菌(CDI)感染,在发作≥2次的患者中,60%复发。多种策略被用来管理复发性CDI,包括长期口服万古霉素,口服非达霉素以及粪微生态移植(FMT)。FMT已被证明是有效的,可能通过恢复正常肠

粪微生态移植是复发性艰难梭状芽胞杆菌感染最具成本效益的疗法。不论是通过鼻胃管还是结肠镜给药,使用经筛选的健康捐献者的冷冻粪便都是有效的。

在首次发作应用抗菌药物治疗后,30%的患者复发艰难梭状芽胞杆菌(CDI)感染,在发作≥2次的患者中,60%复发。多种策略被用来管理复发性CDI,包括长期口服万古霉素,口服非达霉素以及粪微生态移植(FMT)。FMT已被证明是有效的,可能通过恢复正常肠道菌群起作用。然而,审美障碍、关于FMT给药途径的问题以及关于招募和筛选粪便捐献者的问题限制了该方法的使用。现在,两个研究小组调查了后两个问题。

Konijeti和同事对复发性CDI的4种竞争策略(甲硝唑、万古霉素、非达霉素和FMT)进行了成本-效益决策分析。他们将FMT的结肠镜给药作为基本策略,但也检查了十二指肠灌注和灌肠。研究人员对5种治疗方案进行了分析,主要终点是增量成本效益比。经结肠镜给药的FMT被认为是最有成本效益的。对于没有可用FMT的临床机构,最具成本效益的方法是初始万古霉素治疗。

在一项包含20例复发CDI患者的开放标签、随机对照试验中,Youngster和同事比较了冰冻粪便悬浮液的经鼻胃管(NGT)和结肠镜给药方法,粪便来自经过病原体筛查的不相关捐献者。结果,14名参与者(70%)经过第一次灌注后痊愈,5名参与者经过第二次灌注后痊愈,4名参与者在8周的随访期间没有复发。NGT和结肠镜给药的终点相似。

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这两项研究的结果为肠微生态移植作为复发性艰难梭状芽胞杆菌感染的初始治疗提供了强有力的证据。目前,FMT应用受到限制,部分原因是招募和筛选捐献者的物流和费用。如果来自经筛选捐献者的冰冻粪便样品能得到广泛应用,FMT疗法将得到很好的推广。

原始出处:

Management of Recurrent Clostridium difficile Infection .Neil M. Ampel, MD reviewing Konijeti GG et al. Clin Infect Dis 2014 Mar 31.Youngster I et al. Clin Infect Dis 2014 Apr 23. 

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