The goal of this randomized controlled clinical trial is to compare effects of non-invasive ventilation with different modalities (notably CPAP and BIPAP) in patients undergoing heart surgery. The main question\[s\] it aims to answer are: * Which NIV ventilation mode is most effective in cardiac surgery patients? * Is there a big difference between conventional physiotherapy treatment and the use of NIV in these patients? Participants will be submited in the intervention will initially take place in the specific ward that receives patients in the postoperative period of cardiac surgery. Participants will be recruited after the patient is hospitalized the day before the surgery, during which time he will undergo a preoperative evaluation based on the study criteria. On that first day, the evaluation will consist of anamnesis and physical examination, focusing on the history of cardiac disorders, followed by measurements inherent to the protocol. Manovacuometry, chest X-ray, quality of life questionnaire, walk test and spirometry. The evaluation can be carried out in two stages, if there are other demands for the patient during his hospitalization. Researchers will compare three groups: 1 - cpap group - CPAP + usual physical therapy care, 2 - Bipap group - BIPAP + usual physical therapy care and 3 - Control - usual physical therapy care), in the 1:1 allocation ratio and superiority. to see if the effects of non-invasive ventilation with different modalities in patients undergoing cardiac surgery demonstrates some superior way in clinical practice. The observed outcomes will be: evaluation between NIV modalities, spirometry, lung capacity and vital signs. Secondary outcomes included are degree of satisfaction with the global perception of change scale, and MIF - functional independence measure and blood gas parameters.
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Pulmonary function
Timeframe: Day 1 and day 5
Length of hospital stay
Timeframe: The length of hospital stay will be assessed and reported as the number of days from admission to discharge, measured up to 2 weeks after the date of randomization.
Presence of lung complications
Timeframe: From the date of randomization to the date of the first documented progression or the date of death from any cause, whichever occurs first, measured up to 2 weeks after the date of hospital discharge.