What question did this study set out to answer?

To examine the histopathological features of atherosclerotic plaques and evaluate how pre-existing stenosis influences occlusive coronary thrombosis.

August 1, 1983HeartOpen Access

Plaque rupture with severe pre-existing stenosis precipitating coronary thrombosis. Characteristics of coronary atherosclerotic plaques underlying fatal occlusive thrombi.

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Why the study?

Does the degree of pre-existing coronary stenosis determine whether plaque rupture causes occlusive thrombosis?

To examine the histopathological features of atherosclerotic plaques and evaluate how pre-existing stenosis influences occlusive coronary thrombosis.
Examined coronary arteries using a step-sectioning histological technique across cases with 51 recent coronary artery thrombi and 63 larger intimal hemorrhages.
Assessed the degree of pre-existing luminal narrowing and the composition of thrombi at the rupture sites.
Ruptured atheromatous plaques accounted for 40 of 51 recent coronary artery thrombi and 63 intimal hemorrhages.
Pre-existing histological stenosis exceeding 90% was decisive, nearly always converting plaque rupture into occlusive thrombosis rather than isolated intimal hemorrhage.
Thrombi at the site of rupture were predominantly platelet-rich and frequently contained plaque fragments embedded deep within their core.

Does the degree of pre-existing coronary stenosis determine whether plaque rupture causes occlusive thrombosis?

Population

Coronary atherosclerotic plaques underlying fatal occlusive thrombi (51 recent coronary artery thrombi and 63 larger intimal haemorrhages)

Outcome

Occlusive thrombosis versus intimal haemorrhage following plaque rupture

Severe chronic stenosis (>90%) appears to be a prerequisite for occlusive thrombus formation triggered by acute plaque rupture.

No takes yet. Share an insight, caveat, or question.

Severe stenosis may flag high-risk plaques for thrombosis; cross-sectional data leaves open causal confirmation and clinical translation.

Erling Falk (1983) studied this question.

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