The "lub-dub" sound heard during a heartbeat is caused by the closure of the valves that allow blood to enter and exit the heart's pumping chambers. In addition to the two valve closure sounds, there is a third sound called a cardiac murmur, which is brought on by turbulent (rapid) blood flow. As long as the blood flow is turbulent, the heart murmur is typically "innocent" and won't need to be treated. One in every four youngsters will have heart murmurs while they are growing up. However, some irregular blood flow noises could indicate a structural issue or heart abnormality, necessitating additional testing by a cardiologist. Many heart murmur characteristics can be assessed by your child's doctor to determine whether it is normal or abnormal and whether further testing by a paediatric cardiologist is necessary. An electrocardiogram (ECG), which examines the heart rhythm and looks for any abnormal electrical patterns, is a common screening test if your child is referred to a specialist. In some cases, an echocardiogram, which is a focused ultrasound of the heart to look for structural abnormalities, may also be performed.
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