42 days baby heart murmur serious?

If your baby has a heart murmur at 42 days old, it may be serious according to the situation.

Within a few months after birth, due to the immature heart, there may be slight heart murmur. If the baby has no other abnormal manifestations, it is generally not serious and may disappear with the baby's growth and development. However, if the baby's heart murmur is obvious or accompanied by other symptoms, such as shortness of breath, cyanosis, feeding difficulties, etc., it may indicate that there is a heart disease, which is generally more serious.

If the baby has a heart murmur at 42 days old, the family should send it to the hospital in time to clarify the specific cause, so as not to delay treatment and affect the prognosis of the disease.