User talk:Sreelbs

MURMURS...............................................
HEART SOUNDS One of the earliest non invasive measures of health in humans was the sounds made by the beating heart. After Laennec’s invention of the stethoscope,it became apparent that heart sounds could be more complex than a simple lub dub. Heart produces acoustical vibrations as a result of the mechanical action of pumping blood to lungs and other parts of the body. These heart sounds are low frequency transient signals which are produced by the opening and closing vibrations of different heart valves.