title: Performance in the 6-minute walk test and postoperative pulmonary complications in pulmonary surgery: an observational study.
abstract: OBJECTIVE
  To assess functional capacity in the preoperative phase of pulmonary surgery by comparing predicted and obtained values for the six-minute walk test (6MWT) in patients with and without postoperative pulmonary complication (PPC) METHOD: Twenty-one patients in the preoperative phase of open thoracotomy were evaluated using the 6MWT, followed by monitoring of the postoperative evolution of each participant who underwent the routine treatment. Participants were then divided into two groups: the group with PPC and the group without PPC. The results were also compared with the predicted values using reference equations for the 6MWT RESULTS: Over half (57.14%) of patients developed PPC. The 6MWT was associated with the odds for PPC (odds ratio=22, p=0.01); the group without PPC in the postoperative period walked 422.38 (SD=72.18) meters during the 6MWT, while the group with PPC walked an average of 340.89 (SD=100.93) meters (p=0.02). The distance traveled by the group without PPC was 80% of the predicted value, whereas the group with PPC averaged less than 70% (p=0.03), with more appropriate predicted values for the reference equations
  
  
  CONCLUSIONS
  The 6MWT is an easy, safe, and feasible test for routine preoperative evaluation in pulmonary surgery and may indicate patients with a higher chance of developing PPC.
authors.affiliation: Departamento de Biomecânica, Medicina e Reabilitação do Aparelho Locomotor, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Bruna F A
authors.initials: BF
authors.lastname: Santos
authors.affiliation: Departamento de Biomecânica, Medicina e Reabilitação do Aparelho Locomotor, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Hugo C D
authors.initials: HC
authors.lastname: Souza
authors.affiliation: Departamento de Biomecânica, Medicina e Reabilitação do Aparelho Locomotor, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil.
authors.forename: Aline P B
authors.initials: AP
authors.lastname: Miranda
authors.affiliation: Departamento de Clínica Cirúrgica, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil.
authors.forename: Federico G
authors.initials: FG
authors.lastname: Cipriano
authors.affiliation: Departamento de Biomecânica, Medicina e Reabilitação do Aparelho Locomotor, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Ada C
authors.initials: AC
authors.lastname: Gastaldi
mesh_terms: D005080:Exercise Test / Q000379:methods*; D006801:Humans; D011183:Postoperative Complications / Q000503:physiopathology*; D013997:Time Factors; D000070857:Walk Test