• Anael Barberan-Garcia, Marta Ubré, Josep Roca, Antonio M Lacy, Felip Burgos, Raquel Risco, Dulce Momblán, Jaume Balust, Isabel Blanco, and Graciela Martínez-Pallí.
• Respiratory Medicine Department, Hospital Clínic de Barcelona, IDIBAPS, University of Barcelona, CIBERES.
• Ann. Surg. 2018 Jan 1; 267 (1): 50-56.

ObjectiveThe aim of this study was to assess the impact of personalized prehabilitation on postoperative complications in high-risk patients undergoing elective major abdominal surgery.Summary Background DataPrehabilitation, including endurance exercise training and promotion of physical activity, in patients undergoing major abdominal surgery has been postulated as an effective preventive intervention to reduce postoperative complications. However, the existing studies provide controversial results and show a clear bias toward low-risk patients.MethodsThis was a randomized blinded controlled trial. Eligible candidates accepting to participate were blindly randomized (1:1 ratio) to control (standard care) or intervention (standard care + prehabilitation) groups. Inclusion criteria were: i) age >70 years; and/or, ii) American Society of Anesthesiologists score III/IV. Prehabilitation covered 3 actions: i) motivational interview; ii) high-intensity endurance training; and promotion of physical activity. The main study outcome was the proportion of patients suffering postoperative complications. Secondary outcomes included the endurance time (ET) during cycle-ergometer exercise.ResultsWe randomized 71 patients to the control arm and 73 to intervention. After excluding 19 patients because of changes in the surgical plan, 63 controls and 62 intervention patients were included in the intention-to-treat analysis. The intervention group enhanced aerobic capacity [ΔET 135 (218) %; P < 0.001), reduced the number of patients with postoperative complications by 51% (relative risk 0.5; 95% confidence interval, 0.3-0.8; P = 0.001) and the rate of complications [1.4 (1.6) and 0.5 (1.0) (P =  0.001)] as compared with controls.ConclusionPrehabilitation enhanced postoperative clinical outcomes in high-risk candidates for elective major abdominal surgery, which can be explained by the increased aerobic capacity.

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