Brockenbrough's sign

Etiology

• Brockenbrough's sign is observed in association with hypertrophic cardiomyopathy.

Clinical manifestations

• on the beat following a premature ventricular contraction (PVC), the systolic ejection murmur increases in intensity where as the arterial pulse (carotid) volume decreases
• this occurs secondary to increased contractility & decreased afterload

More general terms

• sign/symptom

Additional terms

• hypertrophic cardiomyopathy (HCM), including idiopathic hypertrophic subaortic stenosis (IHSS)