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Case Reports
. 2014 Jan-Mar;10(1):34-7.
doi: 10.14797/mdcj-10-1-34.

The Brockenbrough-Braunwald-Morrow sign

Alejandro R Trevino  1 , John Buergler  1
Affiliations
Case Reports

The Brockenbrough-Braunwald-Morrow sign

Alejandro R Trevino et al. Methodist Debakey Cardiovasc J. 2014 Jan-Mar.

Abstract

Hypertrophic cardiomyopathy is a relatively common genetic disorder and usually asymptomatic. However, approximately 25% of patients develop left ventricular outflow obstruction and can develop angina, syncope, or congestive heart failure. Initiation and titration of beta-blockade usually results in symptomatic improvement. Patients with medically refractory symptoms can see further symptomatic improvement and relief of obstruction with either surgical myectomy or alcohol septal ablation (ASA). Although surgical myectomy has been the gold standard, ASA has been shown in nonrandomized studies and a meta-analysis to be comparable. In patients undergoing ASA without a rest obstruction, the Brokenbrough-Braunwald-Morrow sign can be used to accurately determine the degree of left ventricular outflow tract (LVOT) obstruction prior to, during, and after ASA.

Keywords: Brockenbrough-Braunwald-Morrow sign; alcohol septal ablation; hypertrophic cardiomyopathy.

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Conflict of interest statement

Conflict of Interest Disclosure: The authors have completed and submitted the Methodist DeBakey Cardiovascular Journal Conflict of Interest Statement and none were reported.

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