Mechanism of atrial functional mitral regurgitation in patients with atrial fibrillation: A study using three-dimensional transesophageal echocardiography

Journal of cardiology
Kazato ItoJunichi Yoshikawa

Abstract

Functional mitral regurgitation (MR) can occur in patients with atrial fibrillation (AF) despite having preserved left ventricular (LV) systolic function. This MR is known as atrial functional MR. The aim of this study was to clarify the mechanism of atrial functional MR using real-time three-dimensional transesophageal echocardiography (3DTEE). Sixty patients underwent transthoracic echocardiography and 3DTEE: 16 patients with AF and significant non-organic MR and preserved LV ejection fraction (>50%) constituted the AF-MR group, 20 patients with AF and no significant MR formed the AF-NSMR group, and 24 normal subjects comprised the control group. The left atrial volume index was significantly larger in the AF-MR group (95±41ml/m2) than in the AF-NSMR group (38±13ml/m2, p<0.05) or the control group (21±7ml/m2, p<0.05). The 3D annular circumference was significantly longer in the AF-MR group than in the AF-NSMR group. The annular-anterior leaflet coaptation angle was smaller in the AF-MR group than in the AF-NSMR group (11±6° vs. 18±9°, p<0.05). The annular-posterior leaflet coaptation angle was comparable between the two AF groups (26±12° vs. 28±10°), whereas the annular-posterior leaflet tip angle was larger in the AF-MR grou...Continue Reading

Citations

Nov 16, 2019·Journal of Echocardiography·Yukio AbeToshihiko Shibata
Sep 19, 2019·General Thoracic and Cardiovascular Surgery·Yosuke TakahashiToshihiko Shibata
Jul 3, 2020·Asian Cardiovascular & Thoracic Annals·Yiting FanAlex Pui-Wai Lee
Jul 11, 2020·Current Opinion in Cardiology·Brian D Hoit
Sep 21, 2020·General Thoracic and Cardiovascular Surgery·Masamichi MatsumoriNobuhiko Mukohara
Oct 13, 2019·European Heart Journal Cardiovascular Imaging·Hiroki IkenagaTakahiro Shiota
Jun 21, 2020·General Thoracic and Cardiovascular Surgery·Daisuke KaneyukiAtsushi Iguchi
Sep 23, 2020·Journal of Cardiovascular Translational Research·Michal JaworekRiccardo Vismara
Mar 20, 2018·Circulation Journal : Official Journal of the Japanese Circulation Society·Yukio AbeMinoru Yoshiyama
Sep 19, 2019·Circulation Journal : Official Journal of the Japanese Circulation Society·Hiroki TakadaKen-Ichi Hirata
Oct 14, 2020·Journal of Cardiothoracic Surgery·Daisuke KaneyukiAtsushi Iguchi
Jan 3, 2021·Journal of Cardiac Surgery·Davide CarinoMichele De Bonis
Oct 30, 2020·Journal of Clinical Medicine·Zsuzsanna BaloghMartin Penicka
Feb 17, 2021·Open Heart·Chisato OkamotoChisato Izumi
Dec 23, 2020·Journal of cardiology·Yukio AbeToshihiko Shibata
Sep 15, 2020·Circulation Journal : Official Journal of the Japanese Circulation Society·Chisato IzumiUNKNOWN Japanese Circulation Society Joint Working Group
Jun 1, 2021·Journal of Artificial Organs : the Official Journal of the Japanese Society for Artificial Organs·Yu InabaHideyuki Shimizu
Jul 11, 2021·Computers in Biology and Medicine·Diana C de OliveiraDuncan E T Shepherd

❮ Previous
Next ❯

Related Concepts

Related Feeds

Atrial Fibrillation

Atrial fibrillation is a common arrhythmia that is associated with substantial morbidity and mortality, particularly due to stroke and thromboembolism. Here is the latest research.

Atrial Filbrillation

Atrial fibrillation refers to the abnormal heart rhythm characterized by rapid and irregular beating of the atria. Here is the latest research.

Arrhythmia

Arrhythmias are abnormalities in heart rhythms, which can be either too fast or too slow. They can result from abnormalities of the initiation of an impulse or impulse conduction or a combination of both. Here is the latest research on arrhythmias.