David J Meier M.D.

Atrial fibrillation is a heart condition that occurs due to an irregular or abnormal beating of the heart. It is a serious medical condition that can result in fatality if not treated.An abnormal heartbeat takes place when the pace of the atria and that of the ventricles are not in harmony. The...

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...

Secondary hypertension refers to high blood pressure that is caused by other diseases. This is a less common form of hypertension when compared to ‘essential’ or ‘primary’ hypertension. A number of conditions that affect heart, kidneys or endocrine system may result in secondary...

There are numerous people who complain about waking up with a fast-beating heart. While some think this isn’t anything to worry about, there are studies that link waking up with an irregular heartbeat to sleep apnea. Sleep apnea is a very common sleeping disorder that is very alarming. In fact,...

Through closed vessels the closed circulatory system transports blood. This includes the arteries, veins, and the capillaries. Blood vessels that start from the heart are arteries and vessels that carry blood back to the heart are veins.ArteriesArteries are located deep in the body and have thick...

Atypical myocardial infarction often occurs in older patients with a pronounced cardiosclerosis, circulatory failure, and often with people who have a history of heart attacks.The symptoms may confuse you, or make you think that they are not associated with the heart.Usually, atypical manifestations...