A Module about Hypertension


  • Prof. K. R. Vasantha Kohila, Dr. V. Hemavathy


Hypertension or elevated blood pressure  is a serious medical condition that significantly increases the risks of heart, brain, kidney and other diseases.Hypertension, also known as high or raised blood pressure, is a condition in which the blood vessels have persistently raised pressure. Blood is carried from the heart to all parts of the body in the vessels. Each time the heart beats, it pumps blood into the vessels. Blood pressure is created by the force of blood pushing against the walls of blood vessels (arteries) as it is pumped by the heart. The higher the pressure, the harder the heart has to pump. Blood pressure is the product of cardiac output multiplied by peripheral resistance. Cardiac output is the product of the heart rate multiplied by the stroke volume. In normal circulation, pressure is exerted by the flow of blood through the heart and blood vessels. High blood pressure, known as hypertension, can result from a change in cardiac output, a change in peripheral resistance or both.   Hypertension is a condition where the blood pressure is constantly higher than normal.. The effects of hypertension include heart attacks. Some patients may require medication for high blood pressure and others may be able to use diet and exercise to control it with regular check up from a qualified health care provider.