Brockenbrough sign

Brock·en·brough sign

(brok'en-brō),
absolute decrease in pulse pressure of the beat immediately following a premature beat; a sign of idiopathic hypertrophic subaortic stenosis.

Brockenbrough,

E.C., U.S. surgeon, 1930–.
Brockenbrough sign - a sign of idiopathic hypertrophic subaortic stenosis.