Myocardial bridge

Hi and welcome to the forum! I am glad that I can help you.

You would like to know the cause of your current condition.

A myocardial bridge is a condition when one of the coronary arteries tunnels through the myocardium instead of resting on top of it (which is anatomically normal). As the heart squeezes to pump blood, the muscle that grows around one of the larger arteries exerts pressure across the bridge and constricts the artery. This condition is present from birth. It can lead to uncomfortable, powerful heartbeats, tachycardia and angina.

According to the data that you described, you may be experiencing a mild myocardial bridge. Since the heart muscle suffers from hypoxia when the heart pumps stronger and faster, symptoms common for angina pectoris may appear such as chest pain, that radiates to the left shoulder, left arm and jaws. If this type of pain lasts longer than 20 to 30 minutes and doesn't improve by taking medications, it is considered a heart attack. To avoid a heart attack you may consider keeping your heartbeat on the normal 60 to 80 beats per minute. Avoid caffeine and tea, because these substances have a stimulative effect on the heartbeat by increasing it. You may also consider taking medications for treatment of tachycardia after previous consultation with a cardiologist.

Please keep in mind that I provide medical information only. I am not able to diagnose medical conditions online. Please contact your doctor for further advice and information about diagnosis and treatment of your current condition.