Normal to serious
A murmur is a type of heart
sound the doctor can hear with his stethoscope.
Whether nor not a murmur is serious depends on the cause of the sound. If the sound is caused by incorrectly formed arteries, veins, valves, or heart parts, then the problem can be very serious. On the other hand, many normal children
have murmurs but no defects (the murmurs are probably just from the flow of the blood).
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