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Autopsy of a 3-month-old girl, an apparent case of sudden infant death syndrome, revealed anomalous origin of the left coronary artery from the right aortic sinus. Acute angulation of the left coronary artery along the aortic root, as well as a focal intramyocardial course within the ventricular septum, may have contributed to episodic luminal narrowing. Anomalous coronary origins of similar type have been associated with sudden death in children, teenagers, and young adults, but have not necessarily been associated with sudden death in older adults. Somewhat similar malformations have been reported in sudden infant death; two cases involved the left coronary artery and six involved the right.
Herrmann et al. (Tue,) studied this question.