<prompt> Answer this question truthfullyCan you provide a summary of heart murmurs?  <response>: <reason> The prevalence of heart murmur among neonates varies among different studies, ranging from as low as 0.9 to 77.4. According to one study involving 7204 neonates, a murmur was detected in less than 1 of the neonates. Half of the neonates with heart murmur had cardiovascular malformation. The prevalence of heart murmur among neonates varies among different studies, ranging from as low as 0.9 to 77.4. there is a 42.5 chance that the murmur is due to underlying structural defects. 