Guide To Heart Murmurs: Tricuspid Regurgitation Murmur

WHAT IS IT?

A tricuspid regurgitation murmur is a fairly self descriptive medical term. It is a heart murmur caused by the regurgitation of blood from the right ventricle to the right atrium (through the tricuspid valve).

Source
WHAT CAUSES IT?

This heart murmur can be caused by:

FEATURES OF AUSCULTATION

Where to listen: this murmur is typically heard over the lower left sternal border. 

Classically an mitral regurgitation murmur is heard best at the apex of the heart and can radiate to the axilla (source).

When to listen: this is a holosystolic murmur and can be best appreciated during systole (BEGINS after S1 and ENDS before S2)

What to listen for: typically this murmur is described as a holosystolic, high pitched “blowing murmur”. 

IMPACT OF BEDSIDE MANEUVERS ON THIS MURMUR

Various bedside movements can be performed that can help inform what type of murmur is present. The following maneuvers will have the listed effects on an aortic stenosis murmur:

  • Valslava will cause the murmur intensity to
  • Standing up will cause the murmur intensity to
  • Rapid squatting will cause the murmur intensity to

 

Page Updated: 02.19.2017