Quantitative flow ratio and intravascular ultrasound guided percutaneous coronary intervention of left anterior descending lesion concomitant with severe coronary myocardial bridge

Severe coronary stenosis concomitant with congenital coronary myocardial bridge(MB)is a tough scenario for cardiologist to perform revascularization,for which the complication rates including in-stent restenosis,stent fracture,stent thrombosis and even coronary perforation are still high.[1,2]Meanwhile,the necessity of revascularization in such patients is worth prudent evaluation.Cardiac imaging modalities are crucial and helpful in making revascularized decisions and strategies.Herein,we report a case using quantitative flow ratio(QFR)and intravascular ultrasound(IVUS)to facilitate accurate revascularization in a patient with both severe coronary stenosis and deep coronary MB.

Angiographic differentiation of systolic narrowing of the left anterior descending coronary artery in hypertrophic cardiomyopathy from myocardial bridges

To the Editor： I read with great interest the case report of multiple myocardial bridges affecting both coronary arteries in a patient with hypertrophic cardiomyopathy. However, I differ with the authors in their interpretation of the coronary arteriograms.