Septal myectomy eponym – Cardiology MCQ – Answer

Ventricular septal myectomy for hypertrophic obstructive cardiomyopathy (HOCM) is otherwise known as:

Correct answer: c) Morrow procedure

In Morrow procedure, a rectangular trough is created in the basal left ventricular septum from below the aortic valve to a point beyond the point of contact of the anterior mitral leaflet to the septum (point of SAM septal contact). It is the procedure of choice for symptomatic drug refractory HOCM, provided it is done in centers with adequate experience with the procedure.

Jatene procedure is arterial switch operation for complete transposition of great arteries. Mustard and Senning procedures are atrial switch operations for the same condition when the opportunity for Jatene procedure (to be done in early neonatal period) has been missed.

Reference

1. Morrow AG, Reitz BA, Epstein SE, Henry WL, Conkle DM, Itscoitz SB, Redwood DR. Operative treatment in hypertrophic subaortic stenosis. Techniques, and the results of pre and postoperative assessments in 83 patients. Circulation 1975;52:88–102.