Electrical impedance tomography in evaluating the effects of non-invasive ventilation in the post-operative cardiac surgery: randomized controlled clinical trial - De Novaes, Alita; De Andrade, Armele Dornelas; Campos, Shirley; Modolo, Norma [UNESP]; Goncalves, Christian [UNESP]; Morais, Caio; Rattes, Catarina; Leite, Wagner; Lima, Wildberg; Brandao, Daniella Cunha (European Respiratory Soc Journals Ltd, 2018)