William David Sullivan M.D.

Recommended Articles

• The Human Heart: Function, Chambers, and Location

  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...

• Do I Have Hypertension?

  High blood pressure, also known as hypertension, refers to the increased pressure exerted on the walls as blood passes through arteries. Normal blood pressure is measured as 120/80 mm Hg. Pressure in the range of 120/80 and 139/89 mm Hg is referred to as pre-hypertension, and those above the higher...

• Men Who Do Not Have Children Are at Risk for Heart Disease

  A new study has show that men who do not have children are more likely to die from a heart complication or condition, when compared to men who did have children. In this study, the researchers followed more than 135,000 older men for a decade to observe the impact of fatherhood on health. Study...

• What are the Signs and Symptoms of Congestive Heart Failure?

  Congestive Heart Failure is also called as heart failure, CHF, cardiac failure, left sided heart failure or right sided heart failure. It is a condition in which the heart's function to contract and pump blood is inadequate to meet the needs of the body and the lungs. The blood from the right...

• What are the Stages of Congestive Heart Failure?

  Once a heart failure is diagnosed, it is evaluated. To commence the proper evaluation of heart failure, it is essential to share a complete and accurate history of what you are experiencing and what you have experienced so far with your doctor. Providing a complete and accurate history of your...

• What Is Nicotine?

  IntroductionNicotine is an alkaloid stimulant that comes from the nightshade family of plants, particularly from the leaves of tobacco. The type of nicotine found in tobacco plants is called Nicotiana tabacum. Nicotine can also be synthetically produced. Thousands of chemicals are contained in...