What is Dynamic Auscultation in heart surgery?
It involves determining the effects on heart sounds and murmurs of various physiological and pharmacological manoeuvres, which alter the circulatory dynamics.
The manoeuvres commonly employed are:
1) Respiration
2) Valsalva manoeuvre
3) Postural changes.
4)Premature ventricular contractions.
5)Isomatrix exercise.
6)Pharmacologic agents, e.g., amyl nitrite.