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中级医疗保健提供者能否像医生一样安全有效地进行早期药物流产?尼泊尔的一项随机对照等效性试验。

Can midlevel health-care providers administer early medical abortion as safely and effectively as doctors? A randomised controlled equivalence trial in Nepal.

机构信息

UNDP/UNFPA/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Department of Reproductive Health and Research, WHO, Geneva, Switzerland.

出版信息

Lancet. 2011 Apr 2;377(9772):1155-61. doi: 10.1016/S0140-6736(10)62229-5.

Abstract

BACKGROUND

Medical abortion is under-used in developing countries. We assessed whether early fi rst-trimester medical abortion provided by midlevel providers (government-trained, certified nurses and auxiliary nurse midwives) was as safe and effective as that provided by doctors in Nepal.

METHODS

This multicentre randomised controlled equivalence trial was done in fi ve rural district hospitals in Nepal. Women were eligible for medical abortion if their pregnancy was of less than 9 weeks (63 days) and if they resided less than 90 min journey away from the study clinic. Women were ineligible if they had any contraindication to medical abortion. We used a computer-generated randomisation scheme stratified by study centre with a block size of six. Women were randomly assigned to a doctor or a midlevel provider for oral administration of 200 mg mifepristone followed by 800 μg misoprostol vaginally 2 days later, and followed up 10-4 days later. The primary endpoint was complete abortion without manual vacuum aspiration within 30 days of treatment. The study was not masked. Abortions were recorded as complete, incomplete, or failed (continuing pregnancy). Analyses for primary and secondary endpoints were by intention to treat, supplemented by per-protocol analysis of the primary endpoint. This trial is registered with ClinicalTrials.gov, NCT01186302.

FINDINGS

Of 1295 women screened, 535 were randomly assigned to a doctor and 542 to a midlevel provider. 514 and 518, respectively, were included in the analyses of the primary endpoint. Abortions were judged complete in 504 (97.3%) women assigned to midlevel providers and in 494 (96.1%) assigned to physicians. The risk difference for complete abortion was 1.24% (95% CI -0.53 to 3.02), which falls within the predefined equivalence range (-5% to 5%). Five cases (1%) were recorded as failed abortion in the doctor cohort and none in the midlevel provider cohort; the remaining cases were recorded as incomplete abortions. No serious complications were noted.

INTERPRETATION

The provision of medical abortion up to 9 weeks’ gestation by midlevel providers and doctors was similar in safety and effectiveness. Where permitted by law, appropriately trained midlevel health-care providers can provide safe, low-technology medical abortion services for women independently from doctors.

FUNDING

UNDP/UNFPA/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Department of Reproductive Health and Research (RHR), World Health Organization.

摘要

背景

在发展中国家,药物流产的使用率较低。我们评估了由中级提供者(政府培训认证的护士和助理护士助产士)提供的早期第一孕期药物流产是否与尼泊尔的医生提供的药物流产一样安全有效。

方法

本多中心随机对照等效性试验在尼泊尔的五家农村地区医院进行。如果妊娠小于 9 周(63 天),并且距研究诊所的路程少于 90 分钟,那么妇女就有资格接受药物流产。如果存在任何药物流产禁忌症,则妇女不符合条件。我们使用了由研究中心分层的计算机生成的随机分组方案,块大小为 6。妇女被随机分配给医生或中级提供者,口服 200mg 米非司酮,2 天后阴道给予 800μg 米索前列醇,然后在 10-4 天后进行随访。主要终点是在治疗后 30 天内无人工真空抽吸的完全流产。该研究未进行设盲。流产被记录为完全流产、不完全流产或失败(继续妊娠)。主要和次要终点的分析均按意向治疗进行,主要终点的方案分析进行补充。该试验在 ClinicalTrials.gov 上注册,编号为 NCT01186302。

结果

在筛查的 1295 名妇女中,有 535 名被随机分配给医生,542 名被随机分配给中级提供者。分别有 514 名和 518 名妇女被纳入主要终点分析。在接受中级提供者治疗的 504 名(97.3%)妇女和接受医生治疗的 494 名(96.1%)妇女中,流产被判定为完全流产。完全流产的风险差异为 1.24%(95%CI-0.53 至 3.02),这在预定的等效范围内(-5%至 5%)。在医生组中记录了 5 例(1%)流产失败,而在中级提供者组中则没有;其余病例被记录为不完全流产。未观察到严重并发症。

解释

由中级提供者和医生提供的妊娠 9 周以内的药物流产在安全性和有效性方面相似。在法律允许的情况下,经过适当培训的中级医疗保健提供者可以独立于医生为妇女提供安全、低技术的药物流产服务。

资金来源

联合国开发计划署/联合国人口基金/世界卫生组织/世界银行人类生殖研究、发展和研究培训特别方案(HRP),生殖健康和研究部(RHR),世界卫生组织。

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