Case Report
Spontaneous Coronary Artery Dissection
Abstract
A 45-year-old female athlete with no history of cardiovascular disease or coronary risk factors presented with a non–ST-segment elevation myocardial infarction due to spontaneous right coronary artery dissection. She was treated medically with resolution of her symptoms. Repeat angiography due to recurrent exertional chest discomfort showed TIMI-3 flow and no evidence of dissection. Intravascular ultrasound documented discrete areas of resolving hematoma, but no dissection flap or impingement of the lumen >30%. A coronary computed tomography 6 months later revealed absence of any vascular abnormalities. This rare but potentially lethal condition should be considered in the differential diagnosis of young patients with chest pain, myocardial infarction, or sudden cardiac death, especially if it involves women either in the peripartum period or those using oral contraceptives, or patients without evidence of coronary atherosclerosis or traditional cardiovascular risk factors.
Key Points
* Spontaneous coronary artery dissection (SCAD) should be considered in the differential diagnosis of young patients with chest pain, myocardial infarction, or sudden cardiac death, especially women either in the peripartum period or using oral contraceptives, or patients without evidence of coronary atherosclerosis or traditional cardiovascular risk factors.
* Diagnosis is generally done with standard coronary angiography, occasionally with the assistance of intravascular ultrasound. Multidetector row computed coronary angiography may also facilitate the diagnosis of SCAD, especially in the emergency setting, but experience with this technique is still very limited.
* Treatment option (percutaneous coronary intervention with stenting, conservative medical management, or coronary artery bypass graft) is determined by the location of dissection, number of vessels involved, compromise of coronary blood flow, extent of jeopardized myocardium, and hemodynamic status.
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