Some patients with hypertrophic obstructive cardiomyopathy may require surgical operation to improve cardiovascular performance.
Criteria for considering a surgical intervention - all of the following:
(1) one or both of the following:
(1a) resting gradient in the left ventricular outflow tract > 30 mm Hg
(1b) gradient after provocative maneuver (Valsalva maneuver or exercise) > 50 mm Hg
(2) symptoms of dyspnea and/or angina that limit daily activity
(3) optimal medical therapy
(4) septal thickness >= 16 mm
Types of surgical procedures that can be performed:
(1) surgical septal myectomy
(2) catheter-based alcohol septal ablation
(3) dual chamber pacing
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Purpose: To identify a patient with hypertrophic obstructive cardiomyopathy who may benefit from surgical intervention.
Objective: criteria for diagnosis, severity, prognosis, stage
ICD-10: I42.1, Q24.8,