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Published on: January 17, 2011
Comparison of intermittent versus continuous infusion of propofol for elective oncology procedures in children
Scott M Klein1, Gabriel J Hauser, Barry D Anderson
1Division of Pediatric Critical Care and Pulmonary Medicine, Department of Pediatrics, Georgetown University Medical Center, Washington, DC 20007, USA.
Insights
Both propofol infusion methods provided satisfactory anesthesia for pediatric oncology procedures. Continuous infusions required higher doses and caused greater blood pressure drops compared to bolus dosing.
Area of Science:
- Anesthesiology
- Pediatric Oncology
- Pharmacology
Background:
- Propofol is commonly used for anesthesia in pediatric procedures.
- Optimizing propofol administration is crucial for patient safety and procedural success.
Purpose of the Study:
- To compare continuous infusion versus bolus dosing of propofol in pediatric oncology patients.
- To evaluate the efficacy and safety of different propofol administration methods in a PICU setting.
Main Methods:
- A prospective, randomized study was conducted in a tertiary pediatric intensive care unit (PICU).
- Pediatric oncology patients received propofol via either continuous infusion or bolus administration.
- Anesthesia depth was monitored using Ramsay scores, with additional dosing criteria.
Main Results:
- No significant differences were observed in induction, procedure, or recovery times between the two groups.
- The continuous infusion group required a higher total propofol dose and experienced greater reductions in systolic blood pressure.
- Both methods resulted in adequate anesthesia and high patient/physician satisfaction.
Conclusions:
- Both continuous infusion and bolus propofol administration are effective for pediatric oncologic procedures.
- Continuous infusions are associated with increased total dosage and more pronounced hypotension.
- The choice between methods may depend on physician preference and patient-specific factors.
Objective:
To compare the effects of administering propofol as a continuous infusion vs. bolus dosing in children undergoing ambulatory oncologic procedures in the pediatric intensive care unit (PICU).
Design:
Prospective, randomized study.
Setting:
Tertiary PICU in a university hospital.
Patients:
Ambulatory oncology patients scheduled for diagnostic or therapeutic procedures with propofol anesthesia in the PICU were eligible for enrollment.
Interventions:
Patients were randomly assigned to receive either continuous infusion or bolus administration of propofol in a protocol-driven manner. All patients received an initial bolus of 1.5 mg/kg, with additional 0.5 mg/kg doses until complete induction. Continuous infusions were started at 0.1 mg/kg/min and, if needed, increased 20% after a bolus of 0.5 mg/kg. Bolus group patients were given doses of 0.5 mg/kg if needed. Ramsay scores of < 5 were used as criteria for additional dosing.
Measurements And Main Results:
Eighteen patients undergoing 40 separate procedures were enrolled during the study period. Twenty procedures each were performed with continuous or bolus administration of propofol. No differences were present between groups in demographic characteristics, induction dose and time, procedure and recovery times, or adverse events. All patients had adequate anesthesia and favorable satisfaction scores. More boluses were needed in the bolus group (8.5 +/- 4.6 vs. 5.4 +/- 2.9; p < .05). Average systolic blood pressure decreased more in the continuous infusion group (26.4% +/- 12 vs. 19.3% +/- 10; p < .05). Total propofol dose was higher in the continuous infusion group (8.0 mg/kg +/- 3.8 vs. 5.7 mg/kg +/- 2.4; p < .05).
Conclusion:
Both continuous and bolus administration of propofol provided conditions for conducting oncologic procedures that were satisfying to patients, their families, and physicians. Continuous infusions were associated with a larger total dose and greater decreases in systolic blood pressure. Physician preference is likely to dictate which method is used.
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