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Updated: Feb 15, 2026

Optimized Protocol for the Extraction of Proteins from the Human Mitral Valve
Published on: June 14, 2017
A rare cause of retinal artery embolism: Accessory mitral valve tissue
Muzaffer Kahyaoglu1, Arzu Kalayci1, Cetin Gecmen1
1Department of Cardiology, Kosuyolu Heart Education and Research Hospital, Istanbul, Turkey.
Abstract:
A 42-year-old female patient was referred our clinic for investigation of a history of acute retinal artery occlusion. Transthoracic echocardiography showed a cyst-like, mobile formation on posterior mitral valve leaflet. 2D and real time 3D transesophageal echocardiography showed a flexible circular mobile structure which was attached to posterior mitral valve leaflet. Echocardiographic appearance and morphological characteristics were suggestive of accessory mitral valve tissue.
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The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...

