Many things: There are many types of murmurs that sound and behave differently. Commonly it's related to how blood flows through different parts of your heart.
Answered 5/31/2014
5.7k views
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
8 doctors weighed in across 3 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question