Study protocol
In the preoperative period, all patients included in the survey underwent a 10-meter walk test. The following day, everyone underwent a surgical procedure, was referred to the Intensive Care Unit (ICU) and, being discharged, was directed to the inpatient unit. In all these moments, they received routine care from the unit without any influence from the researchers. All patients were assisted by the physiotherapist on duty and performed breathing exercises, orthostasis training on the first postoperative day, sitting in the chair and ambulation on the second postoperative day when there was no clinical contraindication (use of vasoactive drugs, uncontrolled pain or infectious changes). On the day of hospital discharge, patients repeated the 10-meter test.
After the repetition of the gait speed test, patients were divided into two groups: slow and non-slow. The cutoff point used was 1.0 m / s based on the study by Odonkor et al.10 Those who were not discharged walked less than 1.0 m / s occupied the slow group and those who were above 1.0 m / s were classified as not slow. Patients were followed for six months to observe the primary outcome, which was the need for hospital readmission. There was a comparison between the groups of the initial, final butch speed, delta velocity, cardiopulmonary bypass (CPB), mechanical ventilation (MV), Intensive Care Unit (ICU) time and hospital stay. It is worth mentioning that readmission in any hospital was counted for this study, patients were contacted by telephone seeking this type of information.