2026-10-282026-10-282026ROCHA, Fabiano Oliveira da. Impacto da mobilização precoce na unidade de terapia intensiva sobre a modulação autonômica da frequência cardíaca de pacientes no pós-operatório de cirurgia cardíaca e abdominal. Orientador: Rodrigo Santiago Barbosa Rocha. 2026. 68 f. Dissertação (Programa de Pós Graduação em Reabilitação e Desempenho Funcional) - Centro de Ciências Biológicas e da Saúde, Universidade do Estado do Pará, Belém, 2026.https://portaldaposgraduacao.uepa.br/handle/riuepa/395AbertoCoração - cirurgiaAbdômen - cirurgiaCuidado pó-operatórioUnidade de terapia intensivaFrequência cardíacaHeart surgeryAbdomen surgeryPsot-operative careHeart rateDissertaçãoCiências BiológicasThis dissertation comprises two studies. The first, entitled "Effects of Two Early Mobilization Protocols on Cardiac Autonomic Modulation in Patients Following Major Upper Abdominal Surgery: A Randomized Controlled Trial," evaluated the effects of ambulation and unloaded cycle ergometry, both combined with conventional physiotherapy, on cardiac autonomic modulation in patients undergoing major upper abdominal surgery. Participants were randomly assigned to one of the intervention protocols and followed throughout the postoperative period. Cardiac autonomic modulation was assessed using heart rate variability (HRV) analysis, in addition to intensive care unit (ICU) and hospital length of stay. Both protocols promoted recovery of cardiac autonomic modulation. However, patients in the unloaded cycle ergometry group showed higher SDNN and SD2 values, indicating greater recovery of overall HRV. No significant differences were observed between the groups regarding ICU or hospital length of stay. The second study, entitled "Effects of Early Mobilization on Heart Rate Autonomic Modulation in Patients Following Cardiac Surgery: A Systematic Review," synthesized the available evidence on the effects of early mobilization on cardiac autonomic modulation in patients undergoing cardiac surgery. Most of the included studies reported improvements in vagal-related indices and HRV following early mobilization. The review also identified important limitations in the current literature, including heterogeneity in mobilization protocols and HRV assessment methods, the limited number of randomized clinical trials, and the scarcity of studies involving other surgical populations. Taken together, the findings of both studies indicate that early mobilization contributes to the recovery of cardiac autonomic modulation during the postoperative period and support the use of HRV as a valuable tool for monitoring this recovery process.PPGREAB - Avaliação e intervenção terapêutica nos sistemas neuromuscular