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Outcome of MC3 Ring Annuloplasty for Functional Tricuspid Regurgitation

2019-09-11 01:53:32 | BioPortfolio

Summary

This study includes 105 patients who underwent repair for ≥ moderate tricuspid regurgitation (TR) during mitral valve replacement for rheumatic valve disease. Between January 2016 and December 2018, a group of 23 patients underwent ring annuloplasty with Edward MC3 rings were compared to another group of 82 patients underwent standard suture (DeVega) repair. The primary outcome was residual TR (≥ moderate TR).

Description

This study evaluated early and midterm outcomes after operations for TV repair which were performed at our institution, between January 2016 and December 2018. The mean follow-up duration was 18.84±9.90 months (range: 3-33 months). The study included 105 patients who underwent repair for FTR during mitral valve replacement for rheumatic valve disease. There were 82 patients underwent suture (DeVega) repair and 23 patients underwent ring annuloplasty using Edward MC3 incomplete 3D ring. The indications of surgery for FTR were: (1) severe TR; or (2) moderate TR with annular dilatation greater than 40 mm and/or preoperative systolic pulmonary artery pressure (SPAP) >50 mmHg. We excluded patients with non-rheumatic mitral disease, combined mitral and aortic valve replacement, mitral valve repair, concomitant coronary artery or aortic surgery, mild or organic tricuspid regurgitation, emergency surgery, reoperations or missed data. Based on echocardiographic data, the severity of TR was graded as: 0 (no TR), 1+ (mild TR), 2+ (mild to moderate TR), 3+ (moderately severe TR), or 4+ (severe).

The type of tricuspid valve repair was chosen in according to surgeon's preference and echocardiographic criteria of TV. The DeVega repair was performed when the patient had minimal annular dilation and lower severity of pulmonary hypertension, while ring annuloplasty was performed in patients with severe tricuspid annular dilation and severe pulmonary hypertension. The DeVega repair was performed on a beating heart using pledget-supported two 4-0 polypropylene running parallel sutures. The MC3 ring annuloplasty was performed through right atriotomy using cardiopulmonary bypass and cardioplegic arrest. The ring size was determined after measurement of the length of the attachments of the tricuspid septal leaflet (the distance between the anteroseptal and septoposterior commissures) or the surface area of the anterior leaflet. The chosen ring was undersized by at least one size. The ring was implanted from the anteroseptal commissure to the middle of the septal leaflet. A series of 8 to10 mattress sutures with a 2-0 Ethibond multifilament suture were made on the tricuspid annulus starting from the center of the septal annulus to the anteroseptal commissure in the counter-clockwise direction, to avoid the atrioventricular conduction tissue. Thereafter, the sutures were placed through the sewing ring of the prosthesis , followed by lowering and securing of the ring to the annulus The collected pre-operative data included age, sex, New York Heart Association (NYHA) functional class, , and the type of preoperative mitral valve disease. The primarily assessed post-operative outcome was residual TR (≥ moderate TR; ≥ grade +2). Other assessed pre- and post-operative parameters included NYHA functional class, and echocardiographic data regarding grade of TR, SPAP, tricuspid annulus (TA) diameter, tricuspid annular plane systolic excursion (TAPSE), left atrial diameter (LAD), left ventricular end-diastolic dimension (LVEDD), left ventricular end-systolic dimension (LVESD), and left ventricular ejection fraction (LVEF).

Study Design

Conditions

Functional Tricuspid Regurgitation

Intervention

tricuspid valve repair

Status

Completed

Source

Minia University

Results (where available)

View Results

Links

Published on BioPortfolio: 2019-09-11T01:53:32-0400

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Medical and Biotech [MESH] Definitions

Abnormal protrusion of one or more of the leaflets of TRICUSPID VALVE into the RIGHT ATRIUM during SYSTOLE. This allows the backflow of blood into right atrium leading to TRICUSPID VALVE INSUFFICIENCY; SYSTOLIC MURMURS. Its most common cause is not primary valve abnormality but rather the dilation of the RIGHT VENTRICLE and the tricuspid annulus.

The pathologic narrowing of the orifice of the TRICUSPID VALVE. This hinders the emptying of RIGHT ATRIUM leading to elevated right atrial pressure and systemic venous congestion. Tricuspid valve stenosis is almost always due to RHEUMATIC FEVER.

Backflow of blood from the RIGHT VENTRICLE into the RIGHT ATRIUM due to imperfect closure of the TRICUSPID VALVE.

Cardiac manifestation of gastrointestinal CARCINOID TUMOR that metastasizes to the liver. Substances secreted by the tumor cells, including SEROTONIN, promote fibrous plaque formation in ENDOCARDIUM and its underlying layers. These deposits cause distortion of the TRICUSPID VALVE and the PULMONARY VALVE eventually leading to STENOSIS and valve regurgitation.

The valve consisting of three cusps situated between the right atrium and right ventricle of the heart.

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