human
My doctor told me I have a heart murmur. What is a heart murmur and what are the symptoms?
assistant
A heart murmur is a sound that can be heard with a stethoscope when blood flows through your heart. It’s caused by an extra sound made by turbulent blood flow as it moves through the heart valves. The most common type of murmur is called a mitral valve prolapse, which means the valve between the left atrium (upper chamber) and left ventricle (lower chamber) of the heart doesn’t close properly. This causes blood to leak back into the left atrium during each heartbeat. Symptoms of a heart murmur include fatigue, shortness of breath, chest pain, palpitations, and fainting.