Left main coronary artery compression due to pulmonary artery dilatation complicated by acute biventricular dysfunction: a case report.

ABSTRACT:

Background

Left main coronary artery (LMCA) compression by a dilated pulmonary artery (PA) is one of the lesser known but severe complications in the setting of severe pulmonary hypertension (PH). This phenomenon can lead to critical myocardial ischaemia and poses unique diagnostic and therapeutic challenges.

Case summary

A 36-year-old female with PH due to peripheral pulmonary arterial stenoses presented with significant dyspnoea and exercise intolerance. Echocardiography revealed mild biventricular systolic dysfunction. Right heart catheterization confirmed severe pre-capillary PH, while coronary computed tomography angiography demonstrated a dilated PA compressing the proximal LMCA. Invasive coronary angiography confirmed a subocclusive LMCA stenosis, but during the proce

SUBMITTER: Corradetti S 

PROVIDER: S-EPMC12505292 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature