Hill Jenny, Hoyt Jenna, Achieng Florence, Ouma Peter, L'lanziva Anne, Kariuki Simon, Desai Meghna, Webster Jayne
Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, United Kingdom.
Kenya Medical Research Institute/Centers for Disease Control Research and Public Health Collaboration, Kisumu, Kenya.
PLoS One. 2016 Mar 17;11(3):e0150259. doi: 10.1371/journal.pone.0150259. eCollection 2016.
The World Health Organization recommends intermittent preventive treatment in pregnancy (IPTp) with sulphadoxine-pyrimethamine (SP) alongside long-lasting insecticide-treated nets (LLIN) and case management for reducing the risks associated with malaria in pregnancy in areas of moderate-to-high transmission in sub-Saharan Africa. Due to increasing Plasmodium falciparum resistance to SP, the search for alternative drugs or strategies to control malaria in pregnancy is a priority. We assessed the acceptability among pregnant women and health providers of intermittent screening and treatment (ISTp) and IPTp with dihydroartemisinin-piperaquine (DP) as alternative strategies in the context of an un-blinded clinical trial.
Qualitative data were collected through ten focus group discussions with women participating in a randomized controlled trial to evaluate ISTp or IPTp with DP (multi-day regimen) versus IPTp with SP (single dose) in western Kenya. Individual in-depth interviews were conducted with 26 health providers working in the trial facilities and trial staff.
Women appreciated the advantages of being tested with a rapid diagnostic test (RDT) at every ANC visit (although a few women disliked finger pricks) and accepted that they would not receive any antimalarial when tested RDT-negative. There were differences in women's experiences of the efficacy of antimalarials between the trial arms, with more women in the IPTp-SP arm reporting they had experienced malaria episodes. Side effects were experienced among women taking DP and SP. Although women and trial staff reported adherence to the full DP regimen within the trial, health providers were not confident that women would adhere to multi-day regimens in non-trial settings. Health providers recognized the advantages of ISTp in reducing unnecessary exposure to drugs, but lacked confidence in the reliability of RDTs compared to microscopy.
Our findings indicate that, within a trial context, ISTp-DP and IPTp-DP were generally acceptable among both users and providers and were regarded as potentially valuable alternatives to IPTp-SP. Several challenges were identified the most important of which was concerns with achieving adherence to DP in non-trial settings, requiring operational feasibility studies in routine health systems. Policy adoption of ISTp with RDTs would require a major shift in thinking among health providers due to lack of confidence in RDTs.
世界卫生组织建议,在撒哈拉以南非洲中度至高度传播疟疾的地区,除了使用长效驱虫蚊帐(LLIN)和病例管理外,采用周效磺胺-乙胺嘧啶(SP)进行孕期间歇性预防治疗(IPTp),以降低与妊娠疟疾相关的风险。由于恶性疟原虫对SP的耐药性不断增加,寻找替代药物或控制孕期疟疾的策略成为当务之急。在一项非盲法临床试验中,我们评估了孕妇和卫生服务提供者对间歇性筛查和治疗(ISTp)以及使用双氢青蒿素-哌喹(DP)进行IPTp作为替代策略的接受程度。
通过与参与一项随机对照试验的女性进行十次焦点小组讨论收集定性数据,该试验旨在评估在肯尼亚西部使用DP进行ISTp或IPTp(多日疗法)与使用SP进行IPTp(单剂量)的效果。对在试验设施工作的26名卫生服务提供者和试验工作人员进行了个人深度访谈。
女性赞赏每次产前检查时使用快速诊断检测(RDT)进行检测的优点(尽管有少数女性不喜欢手指采血),并接受RDT检测呈阴性时不会接受任何抗疟药物治疗。试验组之间女性对抗疟药物疗效的体验存在差异,IPTp-SP组中更多女性报告她们曾经历过疟疾发作。服用DP和SP的女性都出现了副作用。尽管女性和试验工作人员报告在试验期间遵守了完整的DP治疗方案,但卫生服务提供者不确定女性在非试验环境中是否会遵守多日治疗方案。卫生服务提供者认识到ISTp在减少不必要的药物暴露方面的优点,但与显微镜检查相比,他们对RDT的可靠性缺乏信心。
我们的研究结果表明,在试验环境中,ISTp-DP和IPTp-DP在使用者和提供者中总体上是可以接受的,并且被视为IPTp-SP的潜在有价值的替代方案。确定了几个挑战,其中最重要的是担心在非试验环境中实现对DP的依从性,这需要在常规卫生系统中进行操作可行性研究。由于对RDT缺乏信心,采用基于RDT的ISTp政策需要卫生服务提供者的思维发生重大转变。