Watts D D
Department of Trauma Services, Fairfax Regional Trauma Center, Falls Church, VA, USA.
Ann Emerg Med. 1995 Nov;26(5):635-9. doi: 10.1016/s0196-0644(95)70017-x.
Several studies have examined the effect of early defibrillation by basic EMTs on patient survival. Although the studies have a common theme of early basic EMT defibrillation, they are diverse in locations, devices, control groups, caregivers, and protocols. They provide a confusing array of information that is difficult to review, synthesize, and interpret. Metaanalysis allows data pooling of these primary studies to combine results and statistically compare the observed variation in study outcomes. The purpose of this metaanalysis was to examine the published studies of early basic EMT defibrillation to learn whether this treatment has an effect on survival of out-of-hospital cardiac arrest. Analysis of the 10 studies that met inclusion criteria showed that despite variations in design, the overall effect size for all the studies was .092, indicating a 9.2% increase in survival over what would have been expected had the EMT-Ds not intervened.
多项研究探讨了基础急救医疗技术人员（EMT）早期除颤对患者生存的影响。尽管这些研究都围绕基础急救医疗技术人员早期除颤这一共同主题，但在地点、设备、对照组、护理人员及方案等方面存在差异。它们提供了一系列令人困惑的信息，难以进行回顾、综合及解读。荟萃分析能够将这些原始研究的数据汇总起来，以合并结果并对观察到的研究结果差异进行统计学比较。本荟萃分析的目的是审查已发表的关于基础急救医疗技术人员早期除颤的研究，以了解这种治疗方法对院外心脏骤停患者的生存是否有影响。对符合纳入标准的10项研究进行分析后发现，尽管设计存在差异，但所有研究的总体效应量为0.092，这表明与急救医疗技术员（EMT-D）不进行干预的预期情况相比，生存率提高了9.2%。
