Heart murmurs are sounds that can be heard when the heart valves open and close with each heartbeat. They can be detected by medical professionals using a stethoscope or other devices. Heart murmurs can be categorized into two types: innocent and abnormal. It is possible for individuals to be born with heart murmurs, while others may develop them over time.
Innocent Heart Murmurs
Innocent heart murmurs are a common occurrence in newborns and children, and they typically indicate a normal and healthy heart. These murmurs happen when blood flows faster than usual through the heart. Certain situations, such as exercise, pregnancy, or rapid growth spurts, can lead to this type of heart murmur. Additionally, innocent murmurs can be caused by fever, anemia, or hyperthyroidism.
If an innocent heart murmur does not go away on its own over time, it may become a life-long condition. However, it is important to note that innocent murmurs are unlikely to cause any health problems or result from underlying health issues.
Understanding Abnormal Heart Murmurs in Children
Abnormal heart murmurs pose a greater concern compared to innocent murmurs in children. These murmurs are often observed in children with congenital heart disease, particularly those born with a septal defect or a hole in the heart, as well as in those with a cardiac shunt. These conditions disrupt the normal blood flow between the heart chambers or blood vessels, resulting in an abnormal murmur.
One way to differentiate abnormal murmurs from innocent ones is by observing if the murmur resolves upon standing. If the murmur disappears in this position, it can help rule out the possibility of an abnormal murmur in children.