A unique presentation of systolic anterior motion of the mitral valve in a patient with obstructive hypertrophic cardiomyopathy and recurrent syncope: a case report.

ABSTRACT:

Background

Systolic anterior motion (SAM) of the mitral valve is a hallmark feature of hypertrophic obstructive cardiomyopathy (HOCM) and a primary cause of dynamic left ventricular outflow tract obstruction. This case report highlights an unusual presentation of SAM associated with acute haemodynamic collapse.

Case summary

A 36-year-old male with HOCM presented with recurrent episodes of syncope. After a multidisciplinary evaluation, he underwent percutaneous intramyocardial septal radiofrequency ablation (PIMSRA). Approximately 1-h post-procedure, the patient developed severe haemodynamic collapse. Transthoracic echocardiography revealed abnormal proximal displacement of the anterior mitral valve leaflet, bringing it into close proximity with the septum. The patient was tr

SUBMITTER: Li W 

PROVIDER: S-EPMC11905931 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature