Hemodynamics during septal ablation for HCM

Outflow gradient in hypertrophic cardiomyopathy (HCM) decreased by alcohol septal ablation. Resting gradient of >100 mmHg is present with pigtail catheter in left ventricular apex and coronary guide assessing aortic pressure.

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Reproduced with permission from: Baim, DS. Grossman's Cardiac Catheterization, Angiography, and Intervention, Seventh Ed, Lippincott Williams & Wilkins, Philadelphia 2006. Copyright © 2006 Lippincott Williams & Wilkins.