[TIVA-TCI (Total IntraVenous Anesthesia-Target Controlled Infusion) versus isoflurane anesthesia for laparoscopic cholecystectomy. Postoperative nausea and vomiting, and patient satisfaction]
- PMID: 19499659
[TIVA-TCI (Total IntraVenous Anesthesia-Target Controlled Infusion) versus isoflurane anesthesia for laparoscopic cholecystectomy. Postoperative nausea and vomiting, and patient satisfaction]
Abstract
Numerous studies have shown that TIVA is followed by a significant reduction in the incidence of PONV in day-case surgery, including laparoscopic cholecystectomy, where the incidence of PONV can reach 70% according to some studies. TCI is the TIVA technique that maintain a constant plasma concentration due to pharmacokynetic models incorporated in TCI device that inject the anesthetic agent. Besides implementing TIVA-TCI in clinical practice in Romania, our study was designed to evaluate the impact of TIVA-TCI on postoperative outcome and our patient satisfaction after laparoscopic cholecystectomy.
Patients and methods: After informed consent, 70 patients ASAI/II undergoing laparoscopic cholecystectomy were randomized in 2 equal study groups: group 1 (n = 35) included patients with TIVA-TCI with propofol (Cpi = 4 microg/ml) and remifentanil, and group 2 (n = 35) were patients undergoing Isoflurane anesthesia. In both groups propofol was administered during induction and remifentanil followed the same protocol: 0.5 microg/kg/min in the first minute during induction, followed by 0.25 microg/kg/min. This infusion was modified by 0.05 microg/kg/min steps according to analgesic needs. PONV (evaluated as both incidence and number of episodes), severity of pain and patient satisfaction score IOWA were compared between study groups.
Results: Both the incidence of PONV (p = 0.03) and the number of episodes/24 h/patients (p = 0.01) were significantly lower in TIVA-TCI group, while there was no significant difference in opioid requirements in study groups (p = 0.21). Patients IOWA satisfaction score at 24 hours postoperatively was significantly higher in TIVA-TCI groups (p = 0.0001).
Conclusions: Compared with Isoflurane, TIVA-TCI was followed by significantly lower incidence of PONV and significantly greater patients satisfaction.