chordae tendineae

(redirected from Chordae tendinae)

chorda

 [kor´dah] (pl. chor´dae) (L.)
a cord or sinew. adj., adj chor´dal.
chorda mag´na Achilles tendon.
chor´dae tendi´neae tendinous cords connecting the two atrioventricular valves to the appropriate papillary muscles in the heart ventricles.
Chordae tendineae of the posterior cusps of atrioventricular valves in a cross-section of the heart. From Dorland's, 2000.
chorda tym´pani a nerve originating from the facial nerve, distributed to the submandibular, sublingual, and lingual glands and the anterior two-thirds of the tongue; it is a parasympathetic and special sensory nerve.
chorda umbilica´lis umbilical cord.
chorda voca´lis vocal cord.

chordae tendineae

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Chordae tendineae

chordae tendineae

stringlike processes in the heart that attach the edges of the bicuspid and tricuspid valves to the walls of the ventricles, preventing them from being forced back into the atria when the ventricles contract.
References in periodicals archive ?
6 cm in length and was attached to the tricuspid valve with intervening chordae tendinae.
All M mode measurements were taken by right parasternal short axis view at level of chordae tendinae as per the recommendations of American Society of Echocardiography.
The company has established a commercial beachhead in Europe for its technology, which allows for the implantation of artificial chordae tendinae, a technique for the repair of mitral valve prolapse, via a transapical, off-pump procedure," Chung said.
In a study comparing cardiac adverse effects of pimobendan with benazepril, (21) dogs with mitral valve regurgitation had increases in systolic function but also developed worsening mitral valve disease, specifically mitral valve lesions (acute hemorrhages, endocardial papilloform hyperplasia on the dorsal surfaces of the leaflets, and infiltration of chordae tendinae by glycosaminoglycans) not seen in the benazepril group.
The thickening of the valve leaflets and fibrosis of the chordae tendinae convert the valve into a rigid cylinder of dense scar tissue, immobilizing the posterior wall of the left ventricle with atrophy of this immobilized posterior papillary muscle (10).
1) The coarse and broad trabeculae that are seen in LVNCC take the place of the normally conspicuous anterior and posterior papillary muscles that anchor the chordae tendinae of the three cusps of the mitral valve.
The true chordae tendinae are fibrous strings that usually originate from the apical portion of the anterior and posterior left ventricular papillary muscles or directly from the ventricular wall, inserting into the valve leaflet.
An echogenic intracardiac focus (EIF) is a bright area or microcalcification in the papillary muscle or chordae tendinae of the fetal heart.
TACT Trial results, recently reported at TCT and EACTS, show good safety and efficacy for NeoChord's sternal-sparing, beating-heart procedure to implant artificial chordae tendinae.
INTRODUCTION: Mitral valve is a complex three dimensional structure constituted by several sub units working in cohesion; The optimum synchronization of these substructures namely anterior and posterior mitral leaflet, annulus fibrosus, chordae tendinae, papillary muscle is critical for optimum functioning.
There have been some developments in the techniques of mitral valve repair with a move towards more use of artificial chordae tendinae and preservation of leaflet tissue rather than resection and increasing use of less invasive techniques (84, 89).
The left atrioventricular (AV) valve is thin, bicuspid, and membranous, whereas the right AV valve is a simple muscular flap devoid of chordae tendinae.