What is lmca full form in medical?

**LMCA** stands for **Left Main Coronary Artery** in medical terminology. It is a vital artery that arises from the aorta and supplies oxygenated blood to a large portion of the heart muscle, specifically the left side of the heart. The LMCA typically branches into the left anterior descending (LAD) artery and the left circumflex (LCx) artery, both of which are essential for proper cardiac function. Blockage or narrowing of the LMCA is particularly dangerous and can lead to serious conditions like myocardial infarction or sudden cardiac death. Timely diagnosis and treatment, such as angioplasty or bypass surgery, are critical for survival.