Estudo comparativo de duas diferentes modalidades de analgesia controlada pelo paciente após cirurgia cardíacaComparasion study of two different patientcontrolled anesthesia regiments after heart surgery Abstract Introduction: Acute and severe pain is frequent in patients who undergo heart surgery and patient controlled analgesia (PCA) can be used to manage postoperative pain.Objective: To compare analgesia using PCA without continous infusion with PCA plus a continuous infusion of morphine on postoperative period of heart surgery and to assess pain scores, morphine consumption, number of demand, patient satisfaction and side effects.Methods: Randomized clinical trial was performed to assess patients who had undergone heart surgery who received either PCA with and without intravenous infusion of morphine. In the postoperative period, PCA was started at extubation in both regiments according to randomization. Pain intensity, morphine consumption, number of demand, satisfaction and side effects were assessed at zero, six, twelve, eighteen, twenty four and thirty hours after patients' extubation.Results: The study enrolled 100 patients. 50 patients received PCA without continuous infusion of morphine (Group A), and 50 patients received morphine PCA plus a continuous infusion of morphine (Group B). Group B patients had less demand of morphine, consumed more morphine and were more satisfied regarding analgesia. No statistical differences were found between groups related to pain intensity, and side effects.Conclusions: Pain control was effective and similar in both groups. The same efficacy of analgesia and the less morphine consumption suggest that PCA without continuous infusion of morphine seems to be better option for postoperative pain manage in heart surgery.
Descriptors
39MOTA, FA ET AL-Comparasion study of two different patientcontrolled anesthesia regiments after heart surgery Rev Bras Cir Cardiovasc 2010; 25(1): 38-44 less side effects and drug consumption after cardiac surgery. Thus, this randomized controlled study was carried out with the aim to compare these two regiments after cardiac surgery.
METHODSThe study protocol was approved by the institutional ethical and research committee and patients were enrolled in the study after formal consent. The major eligibility criteria are listed in Table 1.