William Overton Harris M.D.

Atrial fibrillation (also called AFib) is a heart arrhythmia infection. It causes sporadic electrical signals within the atria, affecting heart rate. This is referred to as rapid ventricular rate (RVR). Atrial fibrillation derives from unusual electrical impulses within the heart.Factors to consider...

Worried about your cholesterol and triglyceride levels? Planning to take another blood test to check on your cholesterol levels? Did you get a warning from your physician regarding elevated levels of triglycerides and LDL (low-density lipoproteins, the ‘bad’ cholesterol) cholesterol in your...

Lupus is a chronic autoimmune condition that causes damage to all parts of the body including the skin, joints, and internal organs....

Our heart rate is automatically controlled by the autonomic nervous system (ANS) that has two divisions: sympathetic and parasympathetic. The part of the ANS that is responsible for raising a person’s heart rate through the sympathetic plexus is the sympathetic division. The parasympathetic...

High blood pressure or hypertension is a chronic condition that may lead to other complications, including organ damage, gradually over a period of time. The blood pressure may become very high and severe all of a sudden resulting in a condition referred to as hypertensive crisis. Hypertensive...

According to a new study, survivors of a heart attack who get angry easily and are stressed out will have increased chances of another heart attack. In this study, about 50% of the heart attack survivors who had very high scores for anger and stress on the psychological tests had a fatal or...