Cardiac Sympathetic Nerve Activity: Understanding Normal Control And The Causes Of The Increase In Heart Failure

Abstract

Heart failure is a condition in which the heart muscle becomes weak and is unable to pump sufficient blood around the body to provide adequate perfusion of the organs. This results in breathlessness, lethargy, fatigue, mental confusion and eventually death. At present the life expectancy of patients with heart failure is poor, with a 5 year survival of 25% in men and 38% in women. It is the only form of heart disease that is increasing, the reason being that thousands of patients who have survived heart attacks or had coronary bypass operations go on to develop heart failure. In heart failure there is a very large increase in the activity of the nerves that stimulate cardiac rate and contrac..

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