Randomized trial comparing partial versus complete chordal-sparing mitral valve replacement: Effects on left ventricular volume and function

Yun, Kwok L.; Sintek, Colleen F.; Miller, D. Craig; Pfeffer, Thomas; Kochamba, Gary S.; Khonsari, Siavosh; Zile, Michael R.

doi:10.1067/mtc.2002.121048

Cited by 118 publications

(80 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…1 This subvalvular apparatus performs a dual role, both maintaining valvular competence and enhancing left ventricular (LV) systolic pump function. The importance of mitral papillary-annular continuity for optimal global LV systolic performance, a concept we have previously termed "valvular-ventricular interaction," 2 has been demonstrated in clinical studies showing improved patient outcomes and LV performance after chordal preservation during mitral valve replacement 3,4 and in experimental studies documenting global LV contractile dysfunction after transection of all chordae. 2,5 Mitral valve repair is associated with superior survival and improved LV function compared with replacement, 6,7 in part because the entire subvalvular apparatus is preserved.…”

mentioning

confidence: 99%

“…2,5 Mitral valve repair is associated with superior survival and improved LV function compared with replacement, 6,7 in part because the entire subvalvular apparatus is preserved. 4 Although the importance of chordal preservation for LV systolic function during valve replacement is widely accepted, the selective roles of first-order versus second-order chordae have only recently been explored. In a study of isolated porcine hearts, Obadia et al showed that transection of the first-order chordae resulted in leaflet prolapse and mitral regurgitation (MR) without affecting circumferential segmental shortening along the mid-anterolateral LV wall.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Importance of Mitral Valve Second-Order Chordae for Left Ventricular Geometry, Wall Thickening Mechanics, and Global Systolic Function

et al. 2004

View full text Add to dashboard Cite

Background-Mitral valvular-ventricular continuity is important for left ventricular (LV) systolic function, but the specific contributions of the anterior leaflet second-order "strut" chordae are unknown. Methods and Results-Eight sheep had radiopaque markers implanted to silhouette the LV, annulus, and papillary muscles (PMs); 3 transmural bead columns were inserted into the mid-lateral wall between the PMs. The strut chordae were encircled with exteriorized wire snares. Three-dimensional marker images and hemodynamic data were acquired before and after chordal cutting. Preload recruitable stroke work (PRSW) and end-systolic elastance (E es ) were calculated to assess global LV systolic function (nϭ7). Transmural strains were measured from bead displacements (nϭ4

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Importance of Mitral Valve Second-Order Chordae for Left Ventricular Geometry, Wall Thickening Mechanics, and Global Systolic Function

et al. 2004

View full text Add to dashboard Cite

show abstract

“…1A) when all the chordate tendinae are severed [1,2]. Mitral valve repair is associated with a higher survival and better left ventricular function compared to prostheses implantation in part due to the preservation of MSVA [3]. However, mitral valve repair techniques are not always feasible or indicated, leading to mitral valve replacement, mainly in the cases of impairment due to fibrosis or calcification.…”

Section: Introductionmentioning

confidence: 99%

Papilopexia cruzada com enxerto na substituição da valva mitral: relato de caso

Lima¹,

Reis²,

Teixeira³

et al. 2008

Rev Bras Cir Cardiovasc

View full text Add to dashboard Cite

The aim of this study is to present the crossed papillopexy technique using bovine pericardial graft in mitral replacement caused by intense valvar and subvalvar fibrosis and calcification. This technique allows the functional preservation of the mitral subvalvar apparatus and was successfully applied, by the first time as far as we known, in a patient with calcified rheumatic mitral stenosis, who underwent mitral valve replacement surgery. The patient had an uneventful recovery and was discharged home on postoperative day 6. Echocardiography controls showed normal left ventricular function without any interference on the mitral prosthesis dynamics.Descriptors: Mitral valve/surgery. Papillary muscles/ surgery. Heart valve prosthesis. ResumoO objetivo deste artigo é mostrar a técnica da papilopexia cruzada com o uso de enxerto de pericárdio bovino na substituição mitral por fibrose e calcificação intensa valvar e subvalvar. Esta técnica permite a preservação funcional do aparelho subvalvar mitral e foi aplicada pela primeira vez, na literatura alcançada, em paciente portador de estenose mitral reumática calcificada, submetido a troca valvar mitral. O paciente evoluiu sem complicações, com alta hospitalar em seis dias. Controles ecocardiográficos mostraram função ventricular esquerda preservada sem interferência na dinâmica da prótese mitral. Descritores: Valva mitral/cirurgia. Músculos papilares/ cirurgia. Próteses valvulares cardíacas.This study was carried out at the Cordis

show abstract

“…6) Preservation of the leaflets and subvalvular apparatus are generally recommended to improve short-term and long-term outcomes in mitral valve replacement. 7,8) However, it is not always a possible procedure.…”

Section: Introductionmentioning

confidence: 99%

Resuspension of the Uninfarcted Papillary Muscle at the Time of Mitral Valve Replacement in a Patient with Post Myocardial Infarction Papillary Muscle Rupture

Abe

Hatano

Terada

et al. 2011

ATCS

View full text Add to dashboard Cite

A 60-year-old woman was referred to the Department of Cardiovascular Surgery of Social Insurance Chukyo Hospital for the rupture of a postinfarction papillary muscle. The rupture was in the posterior part of the anterolateral papillary muscle, in which more than two-thirds of its posterior leaflet was prolapsed. Mortality from the surgical repair of a papillary muscle rupture is quite high. For this case, we resuspended the uninfarcted papillary muscle heads case to preserve mitral ventricular continuity because the mitral annulus was quite small and more than two-thirds of the posterior leaflet were detached from the papillary muscle. The post-operative course of the patient was uneventful. Resuspension of uninfarcted papillary muscle is a useful technique to repair a rupture in the papillary muscle.

show abstract

Randomized trial comparing partial versus complete chordal-sparing mitral valve replacement: Effects on left ventricular volume and function

Cited by 118 publications

References 26 publications

Importance of Mitral Valve Second-Order Chordae for Left Ventricular Geometry, Wall Thickening Mechanics, and Global Systolic Function

Importance of Mitral Valve Second-Order Chordae for Left Ventricular Geometry, Wall Thickening Mechanics, and Global Systolic Function

Papilopexia cruzada com enxerto na substituição da valva mitral: relato de caso

Resuspension of the Uninfarcted Papillary Muscle at the Time of Mitral Valve Replacement in a Patient with Post Myocardial Infarction Papillary Muscle Rupture

Contact Info

Product

Resources

About