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 ?
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).
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.
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.
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.
NeoChord's technology allows the implantation of artificial chordae tendinae, a proven technique for the repair of mitral valve prolapse via a transapical, off-pump procedure," said Dr.
Transthoracic and transesophageal echocardiography showed an elongated anterior mitral chordae tendinae swinging in the left ventricle and it was also protruding into the left ventricular outflow tract (LVOT) during systole (Fig.
Acute and chronic results using NeoChord's sternal-sparing, beating-heart, mitral valve repair system to implant artificial chordae tendinae are encouraging.
It also poses diagnostic difficulties during echocardiography where it could be confused with right atrial thrombi, tumors, right heart vegetations, flail tricuspid leaflet, or a ruptured chordae tendinae.