Introduction: Surgical major procedures like heart surgeries considerable systemic changes constantly promote direct impact on the lives of individuals who undergo them. These effects are related to various causes such as degree of sedation, time in minutes, cardiopulmonary bypass (CPB), pulmonary and cardiac function preoperatively, which can influence the degree of functionality of these patients. Objective: The objective was to evaluate the variation of the degree of functional independence in patients undergoing cardia surgery from admission until the time of discharge from the intensive care unit. Methods: A quantitative study of the prospective cohort was conducted. The survey was conducted in the Inpatient Unit Noble Institute of Cardiology (INCARDIO). After the criteria for inclusion and exclusion sample comprised 14 patients. Patients underwent assessment of functionality through a FIM scale. This evaluation was performed in the preoperative period and at discharge from the ICU, performed by the same examiner. Results: The research population consisted of 9 men and 5 women with a mean age of 50.0 +-14.02 years. According to the mean duration of mechanical ventilation found 9.5 hours (SD: ± 6.42), mean cardiopulmonary bypass time of 64 minutes or 1 hour and 4 min. (SD: ± 20.65) and the average length of hospital stay was 52,3 hours (SD: ± 14,30). The average MIF pre-surgery was 126 and post-operative 103 ± 17.58 with a p-value of 0.0001. Conclusion: We conclude that a significant reduction in the degree of functional independence. From the foregoing, it is clear that commonly cardiac surgery leads to changes in peripheral muscle function, requiring the application of specific therapy in this patient profile.

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