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Published on: January 13, 2018
A randomized trial of propofol consumption and recovery profile with BIS-guided anesthesia compared to standard
Neerja Bhardwaj1, Sandhya Yaddanapudi
1Department of Anaesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, India. neerja.bhardwaj@gmail.com
Insights
Bispectral index (BIS) monitoring did not reduce propofol use or improve anesthesia recovery in children. This study found no significant differences in propofol consumption or recovery times compared to standard practice.
Area of Science:
- Anesthesiology
- Pediatric Anesthesia
- Monitoring
Background:
- Bispectral index (BIS) monitoring is used to guide propofol administration in adults, reducing requirements and improving recovery.
- Evidence for the utility of anesthesia depth monitors in children remains mixed, necessitating further investigation.
Purpose of the Study:
- To assess the impact of BIS monitoring on propofol consumption and anesthesia recovery in pediatric patients.
- To compare BIS-guided propofol administration with standard clinical practice in children aged 2-12 years.
Main Methods:
- A prospective randomized study involving 50 pediatric patients (2-12 years) assigned to either standard practice (SP) or BIS monitoring groups.
- Propofol infusion rates were adjusted based on systolic blood pressure (SP group) or BIS values (45-60) in the BIS group.
- Propofol consumption and recovery metrics (eye opening, extubation, response to commands, Steward score) were recorded.
Main Results:
- No significant difference was observed in mean propofol consumption between the BIS and SP groups (232.6 vs. 250.8 mg).
- Intraoperative hemodynamics and BIS values were comparable across both groups.
- Recovery times, including eye opening, extubation, and response to commands, did not differ significantly between the groups.
Conclusions:
- Bispectral index (BIS)-guided propofol administration offers no discernible advantage in reducing anesthetic consumption or enhancing recovery in pediatric patients compared to standard anesthetic practices.
Aim:
To evaluate the impact of bispectral index (BIS) monitoring on the consumption of propofol and recovery from anesthesia compared to the standard clinical practice in children.
Background:
Titrating propofol administration using BIS reduces its requirement and shortens the recovery from anesthesia in adults. However, there is still mixed evidence for utility of anesthesia depth monitors in reducing anesthesia requirement in children.
Methods/Materials:
A prospective randomized study was conducted in 50 ASA I children of 2-12 years, randomly assigned into standard practice (SP) or BIS group. After induction with propofol, anesthesia was maintained with 150 microg x kg(-1) x min(-1) propofol infusion. The propofol infusion rate was altered by 20 microg x kg(-1) x min(-1) to maintain the systolic blood pressure within 20% of the baseline (SP group) or BIS value between 45 and 60 (BIS group). The rate of propofol infusion was reduced by 50% about 15 min before the end of surgery. The amount of propofol used and the times from stopping the propofol infusion to eye opening, extubation, response to commands and attaining Steward score of 6 were recorded.
Results:
There was no evidence of a difference in the mean propofol consumption in the two groups (BIS 232.6 +/- 136.7 mg, SP 250.8 +/- 118.2 mg). The intraoperative hemodynamics and BIS values were similar in the two groups. There was no evidence for a difference between groups in the mean times from termination of anesthetic to eye opening, extubation, response to commands and to achieve a Steward Recovery score of 6.
Conclusions:
Our study showed no benefit of BIS-guided propofol administration on anesthetic consumption or recovery compared to standard anesthetic practice.
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