Article Text
Abstract
Background In chronic respiratory failure (CRF), body composition strongly predicts survival.
Methods A prospective randomised controlled trial was undertaken in malnourished patients with CRF to evaluate the effects of 3 months of home rehabilitation on body functioning and composition. 122 patients with CRF on long-term oxygen therapy and/or non-invasive ventilation (mean (SD) age 66 (10) years, 91 men) were included from eight respiratory units; 62 were assigned to home health education (controls) and 60 to multimodal nutritional rehabilitation combining health education, oral nutritional supplements, exercise and oral testosterone for 90 days. The primary endpoint was exercise tolerance assessed by the 6-min walking test (6MWT). Secondary endpoints were body composition, quality of life after 3 months and 15-month survival.
Results Mean (SD) baseline arterial oxygen tension was 7.7 (1.2) kPa, forced expiratory volume in 1 s 31 (13)% predicted, body mass index (BMI) 21.5 (3.9) kg/m2 and fat-free mass index (FFMI) 15.5 (2.4) kg/m2. The intervention had no significant effect on 6MWT. Improvements (treatment effect) were seen in BMI (+0.56 kg/m2, 95% CI 0.18 to 0.95, p=0.004), FFMI (+0.60 kg/m2, 95% CI 0.15 to 1.05, p=0.01), haemoglobin (+9.1 g/l, 95% CI 2.5 to 15.7, p=0.008), peak workload (+7.2 W, 95% CI 3.7 to 10.6, p<0.001), quadriceps isometric force (+28.3 N, 95% CI 7.2 to 49.3, p=0.009), endurance time (+5.9 min, 95% CI 3.1 to 8.8, p<0.001) and, in women, Chronic Respiratory Questionnaire (+16.5 units, 95% CI 5.3 to 27.7, p=0.006). In a multivariate Cox analysis, only rehabilitation in a per-protocol analysis predicted survival (HR 0.27, 95% CI 0.07 to 0.95, p=0.042).
Conclusions Multimodal nutritional rehabilitation aimed at improving body composition increased exercise tolerance, quality of life in women and survival in compliant patients, supporting its incorporation in the treatment of malnourished patients with CRF.
Clinical Trial number NCT00230984.
- Chronic obstructive pulmonary disease
- long-term oxygen therapy
- nutrition
- rehabilitation
- quality of life
- COPD pharmacology
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Footnotes
See Editorial, p 935
CMP and NJC contributed equally to this study.
↵* IRAD2 Investigators (1) Grenoble, France: CHU Michallon (C Pison, B Wuyam, E Maclet, I Vivodtzev, R Guzun), Inserm Grenoble Centre d'Investigation Clinique 03 (D Abry, N Henquin, JL Cracowski), AGIR à Dom (F Putod, JC Borel, AS Michallet); (2) Poitiers, France: CHU, Hôpital de La Milétrie (F Caron, JC Meurice, ML Adoun, J Augustin); (3) Saint-Etienne, France: CHU Nord (I. Court-Fortune, F Costes, B Januel, M Charles); (4) Limoges, France: CHU du Cluzeau-Dupuytren (B Melloni, MT Antonini, JC Desport, JM Ribardière, F Dalmay), ALAIR-AVD (P Samptiaux, V Arnold, P Dzugan, E Marchaisseau), Centre MGEN Ste Feyre (S Jeandeau, H Triki); (5) Montpellier, France: CHU Arnaud de Villeneuve (L Meziane, M Hayot, P Godard, C Préfaut); (6) Paris, France: CHU La Pitié Salpêtrière (J. Gonzalez-Bermejo, T Similowski, C Straus, E Dalmolin, E Cornu); (7) Rouen, France: CHU Bois Guillaume (LC Molano, C Tardif, A Cuvelier, JF Muir), ADIR (J Dupuis); (8) Genève, Switzerland: Hôpitaux Universitaires de Genève (C Pichard, JP Janssens). Centralised biological analysis centre: Lyon, France: Hôpital E Herriot (H Lejeune, C Lombard, B Claustrat, F Touraine).
Funding The study was investigator driven. Funds came from academic sources (Programme Hospitalier de Recherche Clinique National, Direction Interrégionale de la Recherche Clinique Rhône-Alpes Auvergne), public foundations (Nutrition 2000Plus), associations (Association Nationale pour les Traitements à Domicile, les Innovations et la Recherche-ANTADIR, AGIRàDom) and pharmaceutical sources (Nutricia Advanced Medical Nutrition, The Netherlands, France; Organon-Schering-Plough, Kenilworth, NJ, USA). The sponsors did not place any restrictions on the academic authors regarding the design and interpretation of the study, or statements made in the final manuscript.
Competing interests CP received financial support as research grants and consulting fees from Abbott, Baxter, B Braun, Cosmed, Fresenius-Kabi, Nestle, Novartis, Nutricia-Numico, Pfizer, Solvay; CMP and NJC from Nutricia Danone for honoraria and travel grants.
Patient consent Obtained.
Ethics approval This study was conducted with the approval of the Comité consultatif de protection des personnes se prêtant aux recherches biomédicales de Grenoble.
Provenance and peer review Not commissioned; externally peer reviewed.