A Rare Encounter of Mitral Arcade With Anomalous Papillary Muscles

Abstract

A congenital mitral arcade is a rare heart structural abnormality that affects the structure of the papillary muscles and chordae tendinae. This structural deviation impacts the mitral valve's functional capability, which is why most patients with this condition develop complications such as mitral stenosis or regurgitation. Some patients can obtain successful mitral valve repair. However, most will still need to get a mitral valve replacement. This case presents a young female who was found to have a mitral arcade and underwent mitral valve repair.

Keywords: cardiology; cardiothoracic surgery; mitral arcade; mitral regurgitation; mitral stenosis.

Figure 1. Transesophageal echocardiogram of the patient’s mitral valve

Given the doming of the mitral valve, shortened chordae, and restricted papillary muscles as marked by the red arrows, these findings are all consistent withhammock mitral valve (mitral arcade)