This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Cardiac murmurs

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Heart murmurs are caused by turbulent blood flow through valves or ventricular outflow tracts.

Factors that cause cardiac murmurs can have effects throughout the body. A thorough examination may be sufficient for diagnosis and auscultation serves as supportive evidence. In practice, there is a limited combination of physical signs and murmurs.

Certain characteristics of cardiac murmurs can imply a specific diagnosis e.g. a continuous machinery-like murmur in a neonate indicates a patent ductus arteriosus.

Note: low- and medium-frequency sounds (eg mid-diastolic murmurs) are more easily heard with the bell of the stethoscope applied lightly to the skin. High-frequency sounds (eg some regurgitant murmurs, ejection murmurs) are more easily heard with the diaphragm.

Note also that as far as a cardiologist is concerned, a heart murmur is not a sound - it is a murmur.

Related pages

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page