Henry P Gong M.D.

What is cholesterol?Cholesterol is primarily produced in the liver, which makes approximately 1,000 milligrams of cholesterol per day. However, it can also be produced by the cells lining the small intestines and also by each cell present in the body. Abnormally low cholesterol levels would mean...

What are The Signs and Symptoms of Atrial Fibrillation?Atrial fibrillation also called A-Fib is a condition of the heart which causes irregular heartbeats or arrhythmia. It causes abnormal vibrations in the atria chamber of the heart and also the ventricle chamber. In a healthy human heart, the...

What is lightheadedness?Lightheadedness or feeling faint may not always be a cause for concern. However, it may also indicate an underlying health problem and can increase the risk of falling and fall-related injuries. If you feel lightheaded, drink water or fluids containing electrolytes and take...

Ischemia refers to the condition in which the muscles of the heart do not get an adequate supply of oxygen. This mostly happens because of reduced blood flow to the cardiac muscles either due to complete blockages or due to a partial block in the blood vessels that carry blood. This condition, also...

What Does a Heart Surgeon Do?A heart surgeon or cardiovascular surgeon is known for operating on the heart as well as the blood vessels for repairing any damage that has been caused to the heart. This could be due to any kind of disorder or disease of the cardiovascular system. Most of the time, the...

What is a bubble study?A bubble study is a type of echocardiogram, which is the ultrasound of the heart. An echocardiogram is done to visualize the heart and its surrounding areas. Better images of the heart can be produced when a “contrast” is used during the echocardiogram. In a bubble study,...