Hamman sign

The Hamman's sign ( English Hamman's sign , even Hamman's crunch ) is a clinical sign of a spontaneous mediastinal emphysema . During auscultation, it is a crunching, cracking, mostly systolic sound that can be heard over the heart . It can be detected in about half of patients with spontaneous mediastinal emphysema.

The sign was named after the American internist Louis Virgil Hamman , who first described the sign in 1939.

Individual evidence

↑ I. Abolnik et al. a .: Spontaneous pneumomediastinum. A report of 25 cases. In: Chest , 1991, 100, pp. 93-95.
↑ ME Liechti u. a .: The pneumomediastinum. In: Dtsch Med Wochenschr. , 2002, 127, pp. 2273-2276.
^ Hamman's sign. whonamedit.com
↑ L. Hamann: Spontaneous mediastinal emphysema. In: Bull. Johns Hopkins Hosp. , 1939, 64, pp. 1-21.

[1] I. Abolnik et al. a .: Spontaneous pneumomediastinum. A report of 25 cases. In: Chest , 1991, 100, pp. 93-95.

[2] ME Liechti u. a .: The pneumomediastinum. In: Dtsch Med Wochenschr. , 2002, 127, pp. 2273-2276.

[3] Hamman's sign. whonamedit.com

[4] L. Hamann: Spontaneous mediastinal emphysema. In: Bull. Johns Hopkins Hosp. , 1939, 64, pp. 1-21.