Hamman sign

Ham·man sign

(ham'ăn),
a crunching, rasping sound, synchronous with heart beat, heard over the precordium and sometimes at a distance from the chest in mediastinal emphysema.

Hamman sign

A substernal crepitance, which is typically synchronous with the heartbeat, caused by percolation of air into the mediastinum.

Hamman sign

Physical exam A crunching sound synchronous with heartbeat, which may be heard in Pts with mediastinal emphysema, pneumopericardium

Ham·man sign

(ham'ăn sīn)
A crunching, rasping sound, synchronous with heart beat, heard over the precordium and sometimes at a distance from the chest in mediastinal emphysema Also known as Hamman crunch.
Synonym(s): Hamman murmur.

Hamman,

Louis, U.S. physician, 1877-1946.
Hamman crunch
Hamman disease - Synonym(s): Hamman syndrome
Hamman murmur - Synonym(s): Hamman sign
Hamman sign - a crunching, rasping sound, synchronous with heartbeat, heard over the precordium and sometimes at a distance from the chest in mediastinal emphysema. Synonym(s): Hamman murmur
Hamman syndrome - spontaneous mediastinal emphysema, resulting from rupture of alveoli. Synonym(s): Hamman disease
Hamman-Rich syndrome - Synonym(s): usual interstitial pneumonia of Liebow
References in periodicals archive ?
Typical sign of this condition is Hamman sign which is synchronized crackle sound at auscultation with the hearth beat.
Whereas subcutaneous emphysema causes crepitus on palpation of the affected body region, pneumomediastinum characteristically gives a positive Hamman sign (crunching or clicking noise heard synchronously with the heart beat on auscultation and best heard in the left lateral decubitus position) when it is clinically significant.
Hamman sign disappeared in 48 hours after the first presentation.
The book tells something about the person and the history behind the eponym, and also provides some landmark original descriptions, as of the hepatojugular reflux and the Hamman sign, to help the reader understand the direct observation and applied logic used by their discoverers.