Causes of tricuspid regurgitation

The causes of tricuspid regurgitation include leaflet injury, papillary muscle ischemia, chordae tendineae rupture, etc.

1. Leaflet injury

Due to rheumatic cardiomyopathy, congenital leaflet malformation, leaflet calcification, etc., resulting in leaflet injury, thus affecting tricuspid valve closure, resulting in tricuspid regurgitation.

2. Papillary muscle ischemia

Due to insufficient blood supply to papillary muscle, resulting in papillary muscle ischemic necrosis or fibrosis, resulting in transient tricuspid valve insufficiency, resulting in tricuspid valve regurgitation.

3. chordae tendineae rupture

Due to congenital dysplasia, spontaneous rupture, secondary infection, etc., resulting in chordae tendineae rupture, resulting in tricuspid valve insufficiency, resulting in tricuspid valve regurgitation.