A new disease entity: Atrial functional mitral regurgitation
| Autor: | Yukio Abe, Toshihiko Shibata, Yosuke Takahashi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Heart Ventricles 030204 cardiovascular system & hematology Contractility 03 medical and health sciences 0302 clinical medicine Left atrial dilatation Internal medicine Atrial Fibrillation medicine Humans Heart Atria cardiovascular diseases 030212 general & internal medicine Functional mitral regurgitation business.industry valvular heart disease Mitral Valve Insufficiency Atrial fibrillation medicine.disease Heart failure New disease cardiovascular system Cardiology Etiology Mitral Valve Cardiology and Cardiovascular Medicine business |
| Zdroj: | Journal of Cardiology. 77:565-569 |
| ISSN: | 0914-5087 |
| Popis: | Functional mitral regurgitation (MR) has been traditionally known as secondary MR resulting from left ventricular (LV) dilatation and systolic dysfunction. However, deterioration of functional MR also relates to mitral annular (MA) dilatation. Furthermore, MA dilatation due to left atrial dilatation in patients with atrial fibrillation (AF) can also cause functional MR, even in the absence of LV systolic dysfunction, in a condition referred to as "atrial functional MR" (AFMR). AFMR also has other etiological factors, including disruption of the MA saddle shape, reduction in MA contractility, inadequate compensation for the MA dilatation resulting from the lack of leaflet remodeling, and hamstringing of the posterior mitral leaflet by atriogenic tethering. AFMR has recently received much attention as an important cause of heart failure, and it represents a considerable therapeutic target in heart failure patients with AF. The traditional functional MR occurring in patients with LV dilatation and systolic dysfunction has since been designated "ventricular functional MR" (VFMR) to distinguish it from AFMR. This review article compares the current perceptions of newly recognized AFMR with those of traditional VFMR. |
| Databáze: | OpenAIRE |
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