Heart attacks can occur without any blocked arteries
the verdict
SUPPORTED
the evidence backs this
confidence 84/100
Heart attacks can indeed occur without blocked arteries, a condition clinically recognized as myocardial infarction with nonobstructive coronary arteries (MINOCA).
Evidence for · 3
Transient Left Ventricular Dysfunction from Cardiomyopathies to Myocardial Viability: When and Why Cardiac Function Recovers.
2024 · cited by 23
Discusses myocardial infarction with non-obstructive coronary arteries (MINOCA) as a condition leading to ventricular dysfunction without typical epicardial blockages.
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More for · 2
Myocardial infarction with nonobstructive coronary arteries (MINOCA): a narrative review.
2025 · cited by 2
Defines MINOCA as myocardial infarction cases occurring with less than 50% narrowing of the coronary arteries.
Myocardial Infarction with Nonobstructive Coronary Arteries (MINOCA): Unveiling Sex-Specific Differences in Pathophysiology, Diagnosis, and Management
2025 · cited by 2
Characterizes MINOCA as myocardial injury without significant coronary artery obstruction due to diverse mechanisms like vasospasm or microvascular dysfunction.