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Definition of faint of heart. : lacking the courage to face something difficult or dangerous âusually used in the phrase not for the faint of heart This is a difficult climb that is not for the faint of heart.
Heart murmurs are extra and abnormal heart sounds that may be an indication of a problem in the cardiac cycle. Murmurs sound like clicks, knocks, snaps or whooshing. The four normal heart sounds are a consequence of vibration of the flow of blood and closure of the heart valves. Similarly heart murmurs are a result of vibration caused by turbulent flow or abnormal closure of the heart valves. A murmur is not always an indication of a problem though and most are benign or innocent murmurs.