ArticleResearch square2025
Sustainability and normalization of an intervention to improve evidence-based myocardial infarction care in Tanzania.
Article in Research square, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: The Multicomponent Intervention to Improve Acute Myocardial Infarction Care (MIMIC) was developed to address gaps in AMI diagnosis and treatment in northern Tanzania. Although initial implementation was promising, many quality improvement interventions are not sustained after research support ends, especially in resource-limited settings. Evaluating sustainability and normalization is essential for understanding the long-term impact of implementation research. We evaluated these outcomes for the MIMIC intervention in a Tanzanian emergency department following a pilot implementation trial. Methods: We conducted a cross-sectional survey of all full-time emergency department clinicians (n = 35) at Kilimanjaro Christian Medical Centre (KCMC) using two validated implementation science tools: the Clinical Sustainability Assessment Tool (CSAT) and the Normalization MeAsure Development (NoMAD) questionnaire. The CSAT assesses seven domains, with higher scores reflecting greater perceived sustainability. The NoMAD measures four constructs, with higher scores indicating stronger normalization. For each domain, scores were summarized descriptively (means, standard deviations) and compared by provider type (doctors vs. registered nurses) using independent t-tests. Results: All 35 eligible clinicians (100%) completed the survey. Mean CSAT domain scores ranged from 5.81 (SD 1.04) for Conclusions: This study is among the first to apply the CSAT and NoMAD tools to evaluate a quality improvement intervention in sub-Saharan Africa. Findings indicate that MIMIC is both highly sustainable and normalized in routine care at KCMC, as reflected by consistently high mean domain scores across both instruments, although formal thresholds for these measures have not yet been established. Strengthening organizational capacity and long-term support, particularly financing and team coordination, may further enhance sustained implementation.
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