Influence of respiratory muscle strength in evolution of patients with heart failure after cardiac surgery Influência da força muscular respiratória na evolução de pacientes com insuficiência cardíaca após cirurgia cardíaca

2011 
AbstractObjective: To investigate the influence of preoperativerespiratory muscle strength in postoperative pulmonarycomplications in patients with heart failure undergoingcardiac surger y.Methods: From March 2009 to September 2010, 40patients admitted to the cardiology service of the Fundacaode Beneficencia Hospital de Cirurgia were divided into twogroups according to the values of maximal inspiratorypressure measured by manometer: Group A (n = 21),composed of patients with normal respiratory musclestrength, and Group B (n = 19), patients with reducedstrength. After pre-operative evaluation, all patientsunderwent the surgical procedure and followed untilhospital discharge by the same researcher, who recorded ondata collection especially its evolution for the presence ofpulmonary complications after surgery, which was dividedgeneral and specific.Results: 19% of patients in gr oup A and 31.6% of patientsin group B had pulmonary complications overall, thisdifference was not statistically significant ( P = 0.29). Regardingthe presence of specific complications, group A was 14.3%and 10.5% group B ( P = 0.55). There was also no difference inthe days of ICU stay and total (ICU + ward) between groups.Conclusion: In this study, preoperative respiratorymuscle dysfunction does not seem to influence the evolutionof heart failure patients for the presence of pulmonarycomplications after cardiac surgery.Descriptors: Hear t Failur e. Muscle S trength. Respirator yMuscles. Cardiac Surgical Procedures. PostoperativeComplications.
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