William E. Callaghan M.D.

Atrial fibrillation is a condition that causes abnormal vibrations in the heart chambers. It leads to changes in the heartbeat ratesand the pulse. As a result, it may cause clotting of blood in the heart chambers. Such quivering sensations are mostly experienced in the atria and ventricle chambers...

Enlarged heart or cardiomegaly is an indication of an underlying condition rather than a disease in itself. Enlargement makes the heart work harder than normal and weakens the heart muscles after a period of time. An enlarged heart has a number of causes including hypertension and coronary artery...

Too Much Sitting May Increase the Chance of Dying “Spending too much time sitting may increase the odds of dying due to any cause”, says a new study published in the Archives of Internal Medicine. The chances of dying from any cause increases by as much as 40% in people who spend a lot of time...

IntroductionThe human heart is a part of the cardiovascular system that is situated in the middle of the chest between the lungs. Its exact location is slightly positioned to the left and behind the sternum (breastbone). The size of the heart is approximately the size of your fist. Its function...

Results of a study presented in the Experimental Biology 2012 meeting in San Diego showed that coping with mental stress is harder on a  woman's heart, when compared to that of men. Researcher Chester Ray, PhD, professor of medicine, and cellular and molecular physiology at Penn State's College of...

Any condition of the heart should be taken seriously, as heart conditions can cause very serious damage to the body, especially if not treated quickly and adequately. While all heart abnormalities should be treated as quickly as possible, it is important to understand the differences between atrial...