ORIGINAL ARTICLE
Year : 2016  |  Volume : 9  |  Issue : 4  |  Page : 584-592

A comparative study of propofol and isoflurane for the maintenance of anesthesia in spine surgery using the bispectral index monitor: a randomized control study


Department of Anaesthesia, Sawai Man Singh Medical College and Hospital, Jaipur, Rajasthan, India

Correspondence Address:
Babita
Behind Tehseel, Chamad Gali, Ward No. 6, Nagar (Tehseel), Bharatpur (dist.), Rajasthan 321205
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1687-7934.198249

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Background Early awakening is required in spine surgery to perform neurological examination in the early postoperative period. Bispectral index (BIS) monitoring allows reduction in the total amount of anesthetic drugs and decreases the time for emergence and recovery. Thus, BIS monitor helps in reducing the incidence of awareness. Kinetics of propofol allows both induction and continuous intravenous maintenance of anesthesia with rapid recovery of consciousness that aids in performing neurological examination in the early postoperative period. This study was conducted to compare propofol and isoflurane in the maintenance of anesthesia during spine surgery using the BIS monitor. Patients and methods A total of 50 patients (American Society of Anesthesiologists grades I and II) scheduled for spine surgeries were divided into two groups (25 each). Group A received an infusion of propofol 5 mg/kg/h and group B received isoflurane 1% vol. for maintenance to keep the BIS value between 40 and 60. The groups were compared as regards pulse rate, systolic blood pressure, diastolic blood pressure, mean arterial blood pressure, surgeons’ satisfaction, time to recovery, extubation time, and side effects. Results Both groups were well matched for their demographic data and preoperative vital data. There was no significant difference in hemodynamic parameter between the two groups. The mean recovery time was significantly different (P<0.001) between groups, with earlier recovery in the propofol group (8.14±0.805 min) compared with the isoflurane group (9.06±0.766 min). Values for BIS were similar between the two groups during surgery (P>0.05). Incidence of postoperative nausea and vomiting was 35% lower in group A compared with group B. The quality of surgical field was acceptable in both groups but slightly better in the propofol group. No other major complications were noted in our study. Conclusion Propofol-based anesthesia provides early and better recovery with clear headedness for early neurological assessment for spine surgery.


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