Background: Left ventricular noncompaction (LVNC) is a rare cardiomyopathy. long QT syndrome (LQTS) is a rare ion channel disease. and simultaneous occurrence of both is even rarer. Further clinical reports and studies are needed to identify the association between LVNC and LQTS and the underlying mechanism. https://www.vacuumdoctores.shop/product-category/sanding/