Association of Transcatheter Mitral Valve Repair With Quality of Life Outcomes at 30 Days and 1 Year: Analysis of the Transcatheter Valve Therapy Registry.

Abstract:

Importance:Improvements in symptoms, functional capacity, and quality of life are among the key goals of edge-to-edge transcatheter mitral valve repair (TMVR) for mitral regurgitation. Objective:To examine health status outcomes among patients undergoing TMVR in clinical practice and the factors associated with improvement. Design, Setting, and Participants:This cohort study used the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy Registry, which contains data on patients with severe mitral regurgitation treated with TMVR from 2013 through 2017 in 217 US hospitals. Main Outcomes and Measures:Change in disease-specific health status (Kansas City Cardiomyopathy Questionnaire-Overall Summary score [KCCQ-OS]; range 0-100 points, with higher scores indicating better health status) at 30 days and 1 year after TMVR. We also examined factors associated with health status at 30 days after TMVR, by means of multivariable linear regression using a generalized estimating equations approach to account for clustering of patients within sites. Results:The KCCQ data were available in 81.2% at baseline, 69.3% of survivors at 30 days, and 47.4% of survivors at 1 year. Among 4226 patients who underwent TMVR, survived 30 days, and completed the KCCQ at baseline and follow-up, the KCCQ-OS increased from 41.9 before TMVR to 66.7 at 30 days (mean change 24.8 [95% CI, 24.0-25.6] points; P < .001), representing a large clinical improvement. The KCCQ scores remained stable from 30 days to 1 year after TMVR, with no further significant increase or decline. On multivariable analysis, atrial fibrillation (-2.2 [95% CI, -3.7 to -0.6] points; P = .01), permanent pacemaker (-2.1 [95% CI, -3.7 to -0.4] points; P = .01), severe lung disease (-3.9 [95% CI, -6.2 to -1.5] points; P = .001), home oxygen (-2.7 [95% CI, -4.9 to -0.4] points; P = .02), and lower KCCQ scores at baseline (3.9 points for each 10-point increase [95% CI, 3.6-4.2]; P < .001) were independently associated with lower 30-day KCCQ-OS scores. In-hospital renal failure was uncommon but was also associated with significant reductions in 30-day KCCQ-OS scores (-7.3 [95% CI -13.3 to -1.2] points). In estimates calculated with inverse probability weighting, after 1 year after TMVR, 54.2% (95% CI 52.2%-56.1%) of patients were alive and well; 23.0% had died, 21.9% had persistently poor health status (KCCQ-OS <60 points), 5.5% had a health status decline from baseline, and 4.6% had both poor health status and health status decline. Conclusions and Relevance:In a national cohort of US patients undergoing edge-to-edge TMVR in clinical practice, health status was impaired prior to the procedure, improved within 30 days, and remained stable through 1 year among surviving patients with available data. While long-term mortality remains high, most surviving patients demonstrate improvements in symptoms, functional status, and quality of life, with only modest differences by patient-level factors.

journal_name

JAMA Cardiol

journal_title

JAMA cardiology

authors

Arnold SV,Li Z,Vemulapalli S,Baron SJ,Mack MJ,Kosinski AS,Reynolds MR,Hermiller JB,Rumsfeld JS,Cohen DJ

doi

10.1001/jamacardio.2018.3359

subject

Has Abstract

pub_date

2018-12-01 00:00:00

pages

1151-1159

issue

12

eissn

2380-6583

issn

2380-6591

pii

2715109

journal_volume

3

pub_type

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