Key result
Performing cardiovascular magnetic resonance imaging within 7 days of admission for MINOCA resulted in fewer normal scans (4% vs 13%) and a higher rate of myocarditis diagnosis (53% vs 36%).
Why the study?
CMR is crucial for diagnosing the cause of MINOCA, but the timing of CMR performance may impact diagnostic yield.
Does performing CMR within 7 days of admission improve the diagnostic yield in patients with MINOCA compared to performing it after 7 days?
Cohort (n=203)
Does performing CMR within 7 days of admission improve the diagnostic yield in patients with MINOCA compared to performing it after 7 days?
Absolute Event Rate: 4% vs 13%
Performing CMR within 7 days of admission in patients with MINOCA increases the diagnostic yield, particularly for identifying myocarditis, and reduces the rate of non-diagnostic normal scans.
Authors
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Early CMR was associated with higher myocarditis yield in MINOCA; hypothesis-generating and requires randomized confirmation before practice change.
Puig et al. (2022) conducted a cohort in Myocardial infarction with nonobstructive coronary arteries (MINOCA) (n=203). Early cardiovascular magnetic resonance (CMR) imaging (≤7 days) vs. Late CMR (>7 days) was evaluated on Normal CMR (no underlying diagnosis identified). Performing cardiovascular magnetic resonance imaging within 7 days of admission for MINOCA resulted in fewer normal scans (4% vs 13%) and a higher rate of myocarditis diagnosis (53% vs 36%).
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