RESUMEN
In rural settings worldwide, many people live in effective blood deserts without access to any blood transfusion. The traditional system of blood banking is logistically complex and expensive for many resource-restricted settings and demands innovative and multidisciplinary solutions. 17 international experts in medicine, industry, and policy participated in an exploratory process with a 2-day hybrid seminar centred on three promising innovative strategies for blood transfusions in blood deserts: civilian walking blood banks, intraoperative autotransfusion, and drone-based blood delivery. Participant working groups conducted literature reviews and interviews to develop three white papers focused on the current state and knowledge gaps of each innovation. Seminar discussion focused on defining blood deserts and developing innovation-specific implementation agendas with key research and policy priorities for future work. Moving forward, advocates should prioritise the identification of blood deserts and address the context-specific challenges for these innovations to alleviate the ongoing crisis in blood deserts.
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Bancos de Sangre , Transfusión Sanguínea , Humanos , Políticas , Consenso , Población RuralRESUMEN
BACKGROUND AND OBJECTIVES: Research in low-resource settings is inherently challenging. We sought to assess the factors that have impeded or facilitated transfusion medicine (TM) research in various African settings. MATERIALS AND METHODS: A qualitative case study was conducted of selected investigators in Africa; selection was based on productivity-spanning publication, leadership and research in TM. We designed a questionnaire to explore the factors impeding or facilitating TM research to understand the impact on the investigators' careers. Written responses were independently coded and double-checked for precision. Qualitative analysis was conducted, whereby responses were grouped thematically and clustered by relationship. The initial findings were discussed with respondents to validate and refine the interpretations. The recorded transcript was analysed and incorporated into the final analysis. RESULTS: Six investigators participated in the study. Their responses yielded 471 coded comments: 389 from the questionnaires and 82 from the ensuing discussion. The most frequently cited factors described included knowledge and intellectual abilities (n = 104), personal effectiveness (n = 99), research and governance structure (n = 97), and engagement, influence and impact (n = 75). Four relationship clusters emerged from the facilitators (n = 42), barriers (n = 28), and common approaches (n = 26) to research, informing summary themes of adaptation, collaboration, perseverance, and resiliency. CONCLUSION: Individual attributes were found to be central to a successful TM research career in African settings. However, given other public health priorities and constraints, interpersonal relationships, organizational structures and the broader research context were important to TM researchers. Overcoming complexities demands adaptation, collaboration, perseverance and resiliency.
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Medicina Transfusional , Humanos , África , Salud PúblicaRESUMEN
This document provides a commentary and further elaboration on the conclusions reached during a recent international workshop on plasma protein therapies organized by the Working Party for Global Safety of the International Society of Blood Transfusion (ISBT). The workshop addressed the profound deficiency in access to safe plasma protein therapies that persists in low- and middle-income countries (LMICs). We provide additional factual economic and technological information that highlights why local production of small-scale virus-inactivated concentrates of clotting factors and immune globulins from domestic recovered plasma through stepwise introduction of available validated technologies is a pragmatic approach to gradually improve the care of patients with bleeding disorders and immune deficiencies in LMIC while supporting progress toward fractionation of plasma. This strategy is in line with a recent WHO guidance. We stress that the active involvement of international blood donor and blood transfusion organizations, patient organizations, governments and industry will be essential in supporting stepwise and sustainable improvements in access to safe, effective, and quality assured plasma protein therapies.
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Proteínas Sanguíneas , Países en Desarrollo , Factores de Coagulación Sanguínea , Transfusión Sanguínea , Humanos , PlasmaRESUMEN
In April 2017, a workshop sponsored by the National Heart, Lung, and Blood Institute, Division of Blood Diseases and Resources, and the Center for Translation Research and Implementation Science was held to discuss blood availability and transfusion safety in low- and middle-income countries (LMICs). The purpose of the workshop was to identify research opportunities for implementation science (IS) to improve the availability of safe blood and blood components and transfusion practices in LMICs. IS describes the late stages of the translational research spectrum and studies optimal and sustainable strategies to deliver proven-effective interventions. Regional working groups were formed to focus on opportunities and challenges in East Africa, Central/West Africa, Middle East and North Africa, Latin America and the Caribbean, Southeast Asia, Western Pacific Asia, Eastern Europe, and Central Asia. The need for an "adequate supply of safe blood" emerged as the major overriding theme. Among the regional working groups, common cross-cutting themes were evident. The majority of research questions, priorities, and strategies fell into the categories of blood availability, blood transfusion safety, appropriate use of blood, quality systems, health economics and budgeting, and training and education in IS. The workshop also brought into focus inadequate country-level data that can be used as the basis for IS initiatives. A mixed approach of needs assessment and targeted interventions with sufficient evidence base to move toward sustainment is an appropriate next step for blood availability and transfusion safety research in LMICs.
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Seguridad de la Sangre/normas , Evaluación de Necesidades/tendencias , Seguridad de la Sangre/economía , Transfusión Sanguínea/economía , Transfusión Sanguínea/normas , Educación , HumanosRESUMEN
Transfusion has been tainted with the risk of contracting an infection - often severe - and fears about this risk are still prevailing, in sharp contrast with the actual risk in Western countries. Those actual risks are rather immunological, technical (overload) or metabolic. Meanwhile, in developing countries and particularly in Africa, transfusion transmitted infections (TTIs) are still frequent, because of both the scarcity of volunteer blood donors and resources and the high incidence and prevalence of infections. Global safety of blood components has been declared as a goal to be attained everywhere by the World Heath Organization (WHO). However, this challenge is difficult to meet because of several intricate factors, of which the emergence of infectious agents, low income and breaches in sanitation and hygiene. This review aims at encompassing the situation of TTIs in different settings and means that can be deployed to improve the situation where this can possibly be.
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Infecciones/etiología , Reacción a la Transfusión , Humanos , Infecciones/epidemiología , Factores de RiesgoRESUMEN
Infectious risk associated with blood transfusion remains a major public health challenge in Africa, where prevalence rates of the major transfusion-transmissible infections (ie, hepatitis B, hepatitis C, human immunodeficiency virus, and syphilis) are among the highest in the world. Resource-limited blood services often operate with minimal predonation screening safeguards, prompting exclusive reliance on laboratory testing to mitigate infectious risk. Transfusion screening with rapid diagnostic tests (RDTs) has been adopted in areas that lack the capacity to support the routine use of more sophisticated technologies. However, uncertainty surrounding the performance of some RDTs in the field has spurred debate regarding their application to blood donation screening. Our review of the literature identified 17 studies that evaluated RDTs for the infectious screening of blood donors in Africa. The review highlights the variable performance of available RDTs and the importance of their use in a quality-assured manner. Deficiencies in performance observed with some RDTs underscore the need to validate test kits prior to use under field conditions with locally acquired samples. Suboptimal sensitivities of some available tests, specifically hepatitis B virus rapid assays, question their suitability in single-test algorithms, particularly in high-prevalence regions. Although RDTs have limitations, many of which can be addressed through improved training and quality systems, they are frequently the only viable option for infectious screening in resource-poor African countries. Therefore, additional studies and specific guidelines regarding the use of RDTs in the context of blood safety are needed.
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Donantes de Sangre , Enfermedades Transmisibles/diagnóstico , Pruebas Diagnósticas de Rutina/métodos , Pruebas Diagnósticas de Rutina/estadística & datos numéricos , Tamizaje Masivo/métodos , África/epidemiología , Seguridad de la Sangre/normas , Seguridad de la Sangre/estadística & datos numéricos , Transfusión Sanguínea/normas , Patógenos Transmitidos por la Sangre/aislamiento & purificación , Enfermedades Transmisibles/sangre , Enfermedades Transmisibles/epidemiología , Selección de Donante/métodos , Humanos , Factores de TiempoRESUMEN
To determine the factors associated with thrombocytopenia among pregnant women in Cameroon, this cross-sectional survey studied 1124 pregnant women aged 15-40 years (mean: 25.35+/-5.48) attending antenatal clinics at two hospitals in Yaoundé. Each woman underwent a thorough medical interview and clinical examination and complete blood count to diagnose anaemia and thrombocytopenia (platelets<150x10(9)/L). When thrombocytopenia was identified, a battery of other tests followed: standard coagulation screening tests, HIV screening, and thick and thin blood films to identify blood parasites. The prevalence of thrombocytopenia was 8.9% (N=100). While a prolonged bleeding time was noted in 20% of women with thrombocytopenia, the Quick test (prothrombin time) and kaolin-cephalin clotting time were normal in all of them. The major factors associated with thrombocytopenia were anaemia (29.8%), history of intermenstrual bleeding (25.7%), history of preeclampsia (23.3%), current hypertensive disorders (23.2%), malaria (22.3%), HIV infection (21.0%) and the absence of antimalaria prophylaxis (16.2%). Thrombocytopenia was not significantly associated with third-trimester bleeding (P=0.57) or with a history of postpartum haemorrhage (P=0.06).