Clinical Application of Echocardiography in Treatment of One Case of Mechanical Aortic Valve Stenosis with Giant Ventricular Aneurysm

Abstract

This paper reports a middle-aged woman who underwent mechanical aortic valve replacement surgery for congenital aortic valve malformation 7 years ago, and she had presented with exertional dyspnea and frequent ventricular arrhythmias in recent years. Transthoracic echocardiography revealed severe stenosis of the mechanical aortic valve orifice, as well as showed changes in left ventricular morphology caused by increased left ventricular afterload, which mainly manifested as localized hypertrophy of interventricular septum and a giant apical aneurysm. We used Simpson’s biplane method to pre-estimate the volume of left ventricular basal cavity, and assisted surgeons to make surgical plan in preliminarily.

During the operation, we assessed the shape, volume, and systolic function of left ventricular after left ventricular plasty, and determined that there were no potential risk factors for left ventricular outflow tract obstruction by transesophageal echocardiography. Under the guidance of transthoracic echocardiography, surgeons did not perform myocardial resection but performed mitral valve replacement. Finally, the patient was discharged smoothly.