a crunching precordial sound synchronous with the heart beat; heard in mediastinal emphysema; also known as Hamman crunch.
Ham·man sign(ham'ăn sīn)
Hamman,Louis, U.S. physician, 1877-1946.
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