Acute myocardial infarction diagnosis and treatment following implementation of a multicomponent intervention in Tanzania: the MIMIC pilot trial
Why the study?
In Tanzania, acute myocardial infarction is underdiagnosed and uptake of evidence-based care is suboptimal, prompting the development of an implementation science intervention to address local barriers to care.
Does a multicomponent quality improvement intervention (MIMIC) improve acute myocardial infarction diagnostic testing, case identification, and evidence-based treatment in a Tanzanian emergency department?
Comparison
Postintervention phase (MIMIC) vs preintervention phase
Design
Single-centre sequential cohort design trial
Follow-up
30 days
Authors
Discussion
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Member takes
Implication
Supports QI for AMI processes in Tanzanian EDs; leaves open survival impact and needs randomized trials.
Structured PICO
Does a multicomponent quality improvement intervention (MIMIC) improve acute myocardial infarction diagnostic testing, case identification, and evidence-based treatment in a Tanzanian emergency department?
P
Population
852 adults (aged ≥18 years) presenting with chest pain and/or dyspnoea to a single emergency department in Tanzania (275 in preintervention phase, 577 in postintervention phase). Mean age 62.4 years (postintervention), 47.3% male (postintervention). Excluded: self-reported fever, chest pain secondary to trauma.
I
Intervention
Multicomponent Intervention for Improving Myocardial Infarction Care (MIMIC) consisting of 5 components: (1) 'AMI suspect' triage cards, (2) online training module on evidence-based AMI diagnosis and care for ED staff, (3) pocket cards summarising AMI care, (4) educational pamphlets for patients, and (5) designated physician and nurse champions.
C
Comparator
Preintervention phase (standard emergency department care prior to MIMIC implementation).
O
Outcome
11 key outcomes evaluated: proportion undergoing ECG testing, troponin testing, both ECG and troponin testing, AMI case identification, treatment with aspirin, clopidogrel/P2Y12 inhibitor, heparin, statin, thrombolytic, referral to a speciality cardiac centre, and 30-day survival.
Implementation of a multicomponent quality improvement intervention in a Tanzanian emergency department significantly increased the uptake of diagnostic testing and evidence-based treatments for acute myocardial infarction, though it did not reduce 30-day mortality.
Limitations
- Single-centre study, limiting generalisability
- Sequential cohort study design used in this study is subject to time-related confounders
- Underpowered to detect differences in mortality
Cite This Study
Hertz et al. (2025) studied this question.