Ayieko Philip, English Mike
Kenya Medical Research Institute/Wellcome Trust Collaboration, Nairobi, Kenya.
Pediatr Infect Dis J. 2007 May;26(5):432-40. doi: 10.1097/01.inf.0000260107.79355.7d.
Pneumonia is a leading cause of morbidity and mortality in children worldwide. Appropriate management depends on accurate assessment of disease severity, and for the majority of children in developing countries the assessment is based on clinical signs alone. This article reviews recent evidence on clinical assessment and severity classification of pneumonia and reported results on the effectiveness of currently recommended treatments.
Potential studies for inclusion were identified by Medline (1990-2006) search. The Oxford Center for Evidence Based Medicine criteria were used to describe the methodologic quality of selected studies.
In the included studies the sensitivity of current definitions of tachypnea for diagnosing radiologic pneumonia ranged from 72% to 94% with specificities between 38% and 99%; chest indrawing had reported sensitivities of between 46% and 78%. Data provide some support for the value of current clinical criteria for classifying pneumonia severity, with those meeting severe or very severe criteria being at considerably increased risk of death, hypoxemia or bacteremia. Results of randomized controlled trials report clinically defined improvement at 48 hours in at least 80% of children treated using recommended antibiotics. However, a limitation of these data may include inappropriate definitions of treatment failure.
Particularly with regard to severe pneumonia, issues that specifically need to be addressed are the adequacy of penicillin monotherapy, or oral amoxicillin or alternative antibiotics; the timing of introduction of high-dose trimethoprim-sulfamethoxazole in children at risk for or known to be infected by HIV and the value of pulse oximetry.
肺炎是全球儿童发病和死亡的主要原因。恰当的治疗取决于对疾病严重程度的准确评估,而对于发展中国家的大多数儿童来说,评估仅基于临床体征。本文综述了有关肺炎临床评估和严重程度分类的最新证据,以及目前推荐治疗方法有效性的报告结果。
通过检索Medline(1990 - 2006年)确定可能纳入的研究。采用牛津循证医学中心的标准来描述所选研究的方法学质量。
在纳入的研究中,当前呼吸急促定义对诊断放射性肺炎的敏感性在72%至94%之间,特异性在38%至99%之间;有报告称胸凹陷的敏感性在46%至78%之间。数据为当前肺炎严重程度分类临床标准的价值提供了一些支持,符合重度或极重度标准的患者死亡、低氧血症或菌血症风险显著增加。随机对照试验结果报告,使用推荐抗生素治疗的儿童中,至少80%在48小时时临床症状有改善。然而,这些数据的一个局限性可能包括治疗失败的定义不恰当。
特别是对于重症肺炎,需要特别解决的问题包括青霉素单药治疗、口服阿莫西林或替代抗生素的充足性;对有感染HIV风险或已知感染HIV的儿童引入高剂量甲氧苄啶 - 磺胺甲恶唑的时机以及脉搏血氧饱和度测定的价值。