Valvular Heart Disease
Relation of Frailty to Outcomes After Transcatheter Aortic Valve Replacement (from the PARTNER Trial)

https://doi.org/10.1016/j.amjcard.2015.03.061Get rights and content

Transcatheter aortic valve replacement (TAVR) is an effective treatment for severe symptomatic aortic stenosis (AS) in patients who are inoperable or at high risk for surgery. However, the intermediate- to long-term mortality is high, emphasizing the importance of patient selection. We, therefore, sought to evaluate the prognostic value of frailty in older recipients of TAVR, hypothesizing that frail patients would experience a higher mortality rate and a higher likelihood of poor outcome 1 year after TAVR. This substudy of the Placement of Aortic Transcatheter Valves trial was conducted at 3 high-enrolling sites where frailty was assessed systematically before TAVR. In total, 244 patients received TAVR at the participating sites. Frailty was assessed using a composite of 4 markers (serum albumin, dominant handgrip strength, gait speed, and Katz activity of daily living survey), which were combined into a frailty score. The cohort was dichotomized at median frailty score. Outcomes measures were the time to death from any cause for >1 year of follow-up and poor outcome at 1 year. Poor outcome was defined as (1) death, (2) Kansas City Cardiomyopathy Questionnaire overall summary (KCCQ-OS) score <60, or (3) decrease of ≥10 points in the KCCQ-OS score from baseline to 1 year. At 1 year, the Kaplan-Meier–estimated all-cause mortality rate was 32.7% in the frail group and 15.9% in the nonfrail group (log-rank p = 0.004). At 1 year, poor outcome occurred in 50.0% of the frail group and 31.5% of the nonfrail group (p = 0.02). In conclusion, frailty was associated with increased mortality and a higher rate of poor outcome 1 year after TAVR.

Section snippets

Methods

The design and initial results of the PARTNER trial have been published previously.15, 16 The PARTNER trial enrolled patients with severe symptomatic AS into 2 cohorts: those at high surgical risk (cohort A) and those considered inoperable because of severe coexisting conditions (cohort B). Patients in cohort B with a suitable iliofemoral vessel were randomized to transfemoral TAVR with the Edwards-Sapien heart valve system (Edwards Lifesciences, Irvine, California) or to standard medical care.

Results

Of the 244 patients included in this analysis, overall, median gait speed was 0.38 m/s (IQR 0.23 to 0.64 m/s), median serum albumin was 3.9 g/dl (IQR 3.6 to 4.2 g/dl), and 172 (71%) performed all ADLs independently. In men, median grip strength was 23.6 kg (IQR 17.0 to 28.3), and in women, median grip strength was 12.2 kg (IQR 10.0 to 15.7; Table 1) The median frailty score was 5 (IQR 3 to 7). Accordingly, for the purposes of this study, 134 (120 cohort A and 14 cohort B) participants with a

Discussion

The present report, drawn from a cohort of 244 patients with severe symptomatic AS who underwent TAVR at 3 US sites, evaluated the association between frailty as estimated by the composite of gait speed, grip strength, ADLs, and albumin and outcomes after TAVR. We found that at 30 days, the rate of mortality and major complications did not differ between the frail and nonfrail groups; however, at 1 year, compared with those with a frailty score less than the median value, those with a frailty

Disclosures

The PARTNER trial was funded by the Edwards Lifesciences (Irvine, CA), and the protocol was developed collaboratively by the Sponsor and Steering Committee. The present analysis was designed and completed by the authors through the PARTNER Publications Office, which is co-located at the Columbia University Medical Center/The Cardiovascular Research Foundation and The Cleveland Clinic and supported by an unrestricted grant from the Edwards Lifesciences, administered by the Medstar Health

References (25)

  • R.R. Makkar et al.

    Transcatheter aortic-valve replacement for inoperable severe aortic stenosis

    N Engl J Med

    (2012)
  • S.V. Arnold et al.

    Predictors of poor outcomes after transcatheter aortic valve replacement: results from the PARTNER (Placement of aortic transcatheter valve) trial

    Circulation

    (2014)
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