411 REFERENCE · Wiktionary
Hamman's sign
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Named after Johns Hopkins clinician Louis Hamman.
Proper noun
en medicine A crunching, rasping sound, synchronous with the heartbeat, heard over the precordium in spontaneous mediastinal emphysema produced by the heart beating against air-filled tissues.
en eponyms