Transapical Beating-Heart Septal Myectomy for Obstructive Hypertrophic Cardiomyopathy With Anomalous Papillary Muscle Insertion.

ABSTRACT:

Objectives

Anomalous papillary muscles (PMs) directly inserted into the anterior mitral valve (MV) constitute an infrequent anomaly in obstructive hypertrophic cardiomyopathy (HCM). This study sought to evaluate the efficacy and safety of a novel approach with transapical beating-heart septal myectomy to relieve obstruction while avoiding abnormal PM manipulation.

Methods

Among 439 patients with obstructive HCM from March 2023 to February 2024, 27 patients (6.2%) were diagnosed with anomalous PM directly inserted into the anterior mitral leaflet. Isolated myectomy without PMs intervention was performed in these patients with a transapical beating-heart septal myectomy approach.

Results

The median age of patients was 54 (47-60) years. The abnormal PMs insertion into th

SUBMITTER: Chen Y 

PROVIDER: S-EPMC12548028 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature