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The effects of high lumbar epidural analgesia on postoperative pulmonary function tests in liver transplant donor patients
© Atalan et al.; 2015
- Published: 1 October 2015
- Epidural Analgesia
- Pulmonary Function Test
- Total Intravenous Anesthesia
The objective of the study was to compare HLEA and general anesthesia combination vs general anesthesia on postoperative PFT in the liver transplant donor patients.
Upon the approval of local ethical committee, this prospective randomised study was performed between October 2014 and April 2015. Liver transplant donor patients with ASA I-II status between age of 18-60 years were included. Patients in Group 1 (G1) received total intravenous anesthesia with propofol and remifentanil infusion (10 mg/kg/h and 0,1-0,25 mcg/kg/min) and those in Group 2 (G2) received propofol and HLEA (10 mgr/kg/h and 7 ml/h epidural infusion-bupivacaine 0,25% plus fentanyl 4mg/ml in saline). G1 received tramadol (0,15 mg/kg/h and 0,2 mg/kg IV bolus) and G2 received HLEA (5 ml/h) for postoperative analgesia. Patient's age, gender, height, weight, APACHE II scores, induction and maintenance dose of propofol (IDP and MDP), length of time for the surgery, preoperative and postoperative 24th hour FEV1, FVC, FEV1/FVC ratio, visual pain scores (VPS) at ICU admission, 2nd, 4th, 8th, 12th, 18th and 24th hours, length of ICU stay (LOS ICU) and length of hospital stay (LOS H) were recorded. Delta values for PFT were calculated. Groups were compared by using Mann Whitney U test due to non-normal distribution pattern.
Groups (33 patients in each group) were similar in terms of demographic data, surgery duration, APACHE II scores, preoperative FEV1, FVC and FEV1/FVC ratio and LOS ICU. Median IDP (1.8 mg/kg/h vs 2.2 mg/kg/h), MDP (4.9 mg/kg/h vs. 5.8 mg/kg/h), delta-FEV1 (-1.2% vs. -6.8%), delta-FVC (-1.8% vs. -7.4%), LOS Hospital (7.0 days vs 8.0 days) in G2 was significantly lower than G1 (p < 0.001 for each). Moreover median VPS of G2 at beginning, 2nd, 4th, 8th, 12th, 18th and 24th hour of ICU admission was also significantly lower than G1 (p < 0.001 for each time point).
Using HLEA in liver transplant donor patients provided better preservation of FEV1 and FVC by decreasing perioperative anesthesia requirement and providing effective postoperative analgesia. Moreover it seemed to decrease length of hospital stay, hence reduce transplantation costs. In this patient group, HLEA can be preferred since it is easy to perform, decreases anesthesia requirement and has beneficial effects on PFT compared to intravenous analgesia, by providing effective postoperative analgesia.
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