Frailty phenotypes, disability, and outcomes in adult candidates for lung transplantation

Jonathan P. Singer, Joshua M. Diamond, Cynthia J. Gries, Jamiela McDonnough, Paul D. Blanc, Rupal Shah, Monica Y. Dean, Beverly Hersh, Paul J. Wolters, Sofya Tokman, Selim M. Arcasoy, Kristy Ramphal, John R. Greenland, Nancy Smith, Pricilla Heffernan, Lori Shah, Pavan Shrestha, Jeffrey A. Golden, Nancy P. Blumenthal, Debbie HuangJoshua Sonett, Steven Hays, Michelle Oyster, Patricia P. Katz, Hilary Robbins, Melanie Brown, Lorriana E. Leard, Jasleen Kukreja, Matthew Bacchetta, Errol Bush, Frank D'Ovidio, Melanie Rushefski, Kashif Raza, Jason D. Christie, David J. Lederer

Research output: Contribution to journalArticlepeer-review

Abstract

Rationale: Frailty is associated with morbidity and mortality in abdominal organ transplantation but has not been examined in lung transplantation. Objectives: To examine the construct and predictive validity of frailty phenotypes in lung transplant candidates. Methods: In amulticenter prospective cohort,wemeasured frailtywith the Fried Frailty Phenotype (FFP) and Short Physical Performance Battery (SPPB). We evaluated construct validity through comparisons with conceptually related factors. In a nested case-control study of frail and nonfrail subjects, we measured serum IL-6, tumor necrosis factor receptor 1, insulin-like growth factor I, and leptin. We estimated the association between frailty and disability using the Lung Transplant Valued Life Activities disability scale.We estimated the association between frailty and risk of delisting or death before transplant using multivariate logistic and Cox models, respectively. Measurements and Main Results: Of 395 subjects, 354 completed FFP assessments and 262 completed SPPB assessments; 28% were frail by FFP (95%confidence interval [CI], 24-33%) and 10%based on the SPPB(95%CI, 7-14%). By eithermeasure, frailty correlatedmore strongly with exercise capacity and grip strength than with lung function. Frail subjects tended to have higher plasma IL-6 and tumor necrosis factor receptor 1 and lower insulin-like growth factor I and leptin. Frailty by either measure was associated with greater disability. After adjusting for age, sex, diagnosis, and transplant center, both FFP and SPPBwere associatedwith increased risk of delisting or death before lung transplant. For every 1-pointworsening in score, hazard ratios were 1.30 (95% CI, 1.01-1.67) for FFP and 1.53 (95%CI, 1.19-1.59) for SPPB. Conclusions: Frailty is prevalent among lung transplant candidates and is independently associated with greater disability and an increased risk of delisting or death.

Original languageEnglish (US)
Pages (from-to)1325-1334
Number of pages10
JournalAmerican journal of respiratory and critical care medicine
Volume192
Issue number11
DOIs
StatePublished - Dec 1 2015
Externally publishedYes

Keywords

  • Biomarker
  • Body composition
  • Disability
  • Frailty
  • Lung transplantation

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine

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