منابع مشابه
Simplified placement of multiple artificial mitral valve chords.
BACKGROUND The use of artificial chords for the replacement of diseased mitral valve chordae and the correction of anterior and posterior leaflet prolapse is well described, although it is infrequently applied because of technical challenges. METHODS A simplified approach to attaching the new chords to a single papillary muscle base within the left ventricle has been reported, and we present ...
متن کاملTechniques for ensuring the correct length of new mitral chords.
Repair of degenerative mitral insufficiency has extensively been shown to be superior to replacement. In the majority of cases, the culprit lesion is limited to the posterior mitral leaflet (PML), which is treated with quadrangular resection of the prolapsing PML, annular plication of the corresponding segment of the annulus, and prosthetic annuloplasty. Anterior mitral leaflet (AML) prolapse i...
متن کاملAnterior mitral basal 'stay' chords are essential for left ventricular geometry and function.
BACKGROUND AND AIM OF THE STUDY Among the anterior mitral basal chords, two particularly strong and thick stay chords (SC) remain under tension during the entire cardiac cycle. Collagen fibers of the anterior mitral leaflet (AML) are oriented from insertion of the SC on the AML to the fibrous trigones (FT), suggesting that local stress is directed from the papillary muscles (PM) over the SC and...
متن کاملAnterior mitral leaflet mobility is limited by the basal stay chords.
BACKGROUND We hypothesize that 2 tendon-like anterior basal stay chords, which remain taut during the entire cardiac cycle, limit the motion of the anterior mitral leaflet. METHODS AND RESULTS Sonomicrometric crystals were implanted in 6 sheep at the insertion of stay chords at anterior mitral leaflet (S1 and S2), papillary muscle tips, fibrous trigones, mitral annulus, and the tip of the ant...
متن کاملCutting second-order chords does not prevent acute ischemic mitral regurgitation.
BACKGROUND Cutting anterior mitral leaflet second-order chordae has been proposed for repair in ischemic mitral regurgitation (IMR). We examined the efficacy of such chordal cutting in preventing acute IMR. METHODS AND RESULTS Six sheep underwent radiopaque marker placement (left ventricle, mitral annulus, papillary muscles [PMs], and leaflets). The largest second-order chord from each PM was...
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ژورنال
عنوان ژورنال: Hellenic Journal of Cardiology
سال: 2020
ISSN: 1109-9666
DOI: 10.1016/j.hjc.2018.10.004