Preoperative respiratory muscle dysfunction is a predictor of prolonged invasive mechanical ventilation in cardiorespiratory complications after heart valve surgery - Rodrigues, Alfredo José; Mendes, Viviany; Ferreira, Paulo Eduardo Gomes; Xavier, Marcia Arruda Fajardo; Augusto, Viviane Santos; Bassetto, Solange; Evora, Paulo Roberto Barbosa (European Journal of Cardio-Thoracic Surgery, 2011)