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Infantile dilated cardiomyopathy due to congenital left main coronary ostial stenosis.

ABSTRACT: Although a rare form of congenital heart disease, anomalies of the coronary arteries can present as heart failure in infants. The most common lesion is an anomalous left coronary artery arising from the pulmonary artery, but other abnormalities can present similarly. This case is an infant who is found to have left coronary ostial stenosis causing dilated cardiomyopathy.

SUBMITTER: Doyle J

PROVIDER: S-EPMC8048097 | biostudies-literature |

REPOSITORIES: biostudies-literature

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An echocardiographic clue for ostial left main coronary artery stenosis.

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Project description:We present the case of an 82-year-old man whose left coronary ostium became obstructed 15 months after transcatheter aortic valve replacement (TAVR) with a balloon-expandable valve. The patient underwent TAVR for symptomatic severe aortic stenosis with no complications. Fifteen months after the initial TAVR, the patient complained of chest pain while exercising, and the exercise stress myocardial perfusion scintigraphy demonstrated the development of regional myocardial ischemia in the region of the left coronary artery. Coronary angiography implied severe stenosis in the ostium of the left coronary artery. Computed tomography angiography and intravascular ultrasonography indicated a soft tissue component along with stent struts, which was considered to cause delayed coronary obstruction. Our report emphasizes the importance of having a low threshold for clinically suspecting delayed coronary obstruction in patients who have undergone TAVR, even after several years of the procedure. <Learning objective:Delayed coronary obstruction (DCO) should be suspected in patients presenting with new ischemic symptoms after transcatheter aortic valve replacement (TAVR). DCO may occur even in the case of TAVR with a balloon-expandable prosthetic valve, on antithrombotic regimens, and several years after the initial procedure.>.

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