In heart sound contain of two sound "Lub" and "Dub" When one of these sounds is not distinct, but is more of a gurgle, a person is said to have a heart murmur. What could cause this?

Answer 1

Heart murmurs sometmes, but not always, indicate a heart valve problem. Some types of murmurs are harmless. For a list of possible causes, see
http://www.mamashealth.com/heart/hmurmur.asp