Related Experiment Videos
Haemodynamic responses to sevoflurane compared with halothane during inhalational induction in children
Insights
Sevoflurane and halothane inhalational anesthesia induction in children showed smooth, rapid results. Sevoflurane, however, caused greater increases in heart rate and blood pressure compared to halothane.
Area of Science:
- Anesthesiology
- Pediatric Anesthesia
- Cardiovascular Physiology
Background:
- Inhalational induction is common in pediatric anesthesia.
- Understanding hemodynamic changes during induction is crucial for patient safety.
- Halothane has been a traditional agent, while sevoflurane offers advantages.
Purpose of the Study:
- To compare the hemodynamic effects of sevoflurane versus halothane during mask induction in children.
- To evaluate heart rate and systolic blood pressure changes in pediatric patients receiving these agents.
Main Methods:
- A randomized study of 50 pediatric patients (1-12 years, ASA I-II) undergoing minor elective surgery.
- Patients were randomly assigned to mask induction with either sevoflurane or halothane in a 60% nitrous oxide/40% oxygen mixture.
- An overpressure technique was used, with rapid increases in gas concentrations.
Main Results:
- Both sevoflurane and halothane provided smooth and rapid inhalational induction.
- Sevoflurane group exhibited significant increases (up to 20%) in heart rate and systolic blood pressure compared to baseline and the halothane group (P < 0.05).
- No serious complications were noted in either group.
Conclusions:
- Inhalational induction with sevoflurane in children is associated with greater transient increases in heart rate and blood pressure compared to halothane.
- Both agents are safe for mask induction in this pediatric population.
- Clinicians should be aware of these potential hemodynamic differences when selecting an agent for pediatric inhalational induction.
Abstract:
We studied the haemodynamic changes during induction of anaesthesia in 50 ASA I and II children (1-12 yrs) undergoing minor elective surgery. The patients were randomly divided into two groups to receive either halothane (n = 25) or sevoflurane (n = 25) in a mixture of O2 and N2O (40:60) for mask induction of anaesthesia. Induction of anaesthesia was performed with an overpressure technique by administering rapid increases of gas concentrations, in increments of 1% up to 7% for sevoflurane and of 0.5% up to 3% for halothane. Induction was smooth and rapid in both groups but characterized by increases in heart rate and systolic blood pressure up to 20% especially in the sevoflurane group (P < 0.05); these increases in the latter group were significant compared with baseline and the halothane group (P < 0.05). No serious complications were observed. The authors conclude that more children experienced heart rate and blood pressure increases during the early stage of inhalational induction with sevoflurane compared with halothane.