title: Course of functional status in elderly patients after coronary artery bypass surgery: 6-month follow up.
abstract: OBJECTIVE
  To determine longitudinal changes in functional status using three functional assessment scales in elderly patients undergoing coronary artery bypass grafting.
  
  
  METHODS
  This was a prospective observational cohort study of 73 patients aged ≥60 years undergoing elective coronary artery bypass grafting. Patients were assessed for functional status before admission, at hospital discharge, and at 1 and 6 months after discharge using the Functional Independence Measure, Katz Activities of Daily Living scale, and Lawton Instrumental Activities of Daily Living scale. Data were stratified by age (≥70 years and <70 years) and complications (with and without) for analysis.
  
  
  RESULTS
  In patients aged ≥70 years (n = 38), Functional Independence Measure scores ranged from 121.30 ± 6.42 (pre-admission) to 112.10 ± 17.10 (1 month) and 117.80 ± 13.50 (6 months), Katz scores from 5.88 ± 0.32 (pre-admission) to 5.45 ± 1.04 (1 month) and 5.83 ± 0.65 (6 months), and Lawton scores from 25.40 ± 3.30 (pre-admission) to 20.05 ± 4.93 (1 month) and 24.50 ± 4.10 (6 months; P < 0.001 for all). No significant changes were found in scale scores over time between groups with (n = 34) and without (n = 39) complications. When groups aged ≥70 years (n = 38) and <70 (n = 35) were compared, Functional Independence Measure scores showed a difference toward recovery over time in older patients (discharge - pre-admission, P = 0.010; 1 month - pre-admission, P = 0.0004; and 6 months - pre-admission, P = 0.079).
  
  
  CONCLUSIONS
  The Functional Independence Measure was able to detect significant functional loss over a 6-month period in elderly patients undergoing coronary artery bypass grafting, suggesting that this scale is a promising tool for the assessment of functional recovery over time after cardiac surgery, especially in patients aged older than 70 years. Geriatr Gerontol Int 2015; ●●: ●●-●●.
authors.affiliation: Intensive Care Unit, Hospital Federal dos Servidores do Estado, Brazilian Ministry of Health, Rio de Janeiro, Brazil.|Graduate Program in Bioethics, Applied Ethics, and Public Health (PPGBIOS), National School of Public Health, Fundação Oswaldo Cruz (FIOCRUZ), Manguinhos, Brazil.
authors.forename: Márcio
authors.initials: M
authors.lastname: Niemeyer-Guimarães
authors.affiliation: Division of Geriatrics and Gerontology, Department of Medicine, Medical School, Universidade Federal de São Paulo, São Paulo, Brazil.
authors.forename: Maysa Seabra
authors.initials: MS
authors.lastname: Cendoroglo
authors.affiliation: Division of Geriatrics and Gerontology, Department of Medicine, Medical School, Universidade Federal de São Paulo, São Paulo, Brazil.
authors.forename: Clineu Mello
authors.initials: CM
authors.lastname: Almada-Filho
mesh_terms: D000203:Activities of Daily Living; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001938:Brazil; D015331:Cohort Studies; D003266:Continuity of Patient Care; D001026:Coronary Artery Bypass / Q000379:methods* / Q000401:mortality; D003324:Coronary Artery Disease / Q000175:diagnosis / Q000401:mortality / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D017052:Hospital Mortality / Q000639:trends; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D010351:Patient Discharge / Q000706:statistics & numerical data; D011182:Postoperative Care / Q000379:methods; D011446:Prospective Studies; D020127:Recovery of Function; D018570:Risk Assessment; D062606:Tertiary Care Centers; D013997:Time Factors; D016896:Treatment Outcome
keywords: aging; coronary artery bypass; frail elderly; hospitalization; surgery