Mill wheel murmur | definition of mill wheel murmur by Medical dictionary
mill wheel murmur
mill wheel mur·mur
churning cardiac murmur produced by air embolism to the heart; also heard in pneumohydropericardium.A temporary loud, machinery-like, churning or splashing sound due to blood mixing with air in the right ventricle, best heard over the precordium, which is a late sign of significant—i.e., > 200 mL—venous air embolism, accompanied by increased pressure, cyanosis, tachycardia, syncope. It may be of pleural, pericardial, or cardiac origin
References in periodicals archive
Heart auscultation revealing air sucking or mill wheel murmur
, a churning and splashing sound, can lead to immediate identification of air embolism.
The distinctive mill wheel murmur
is heard over the precordium.