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Early intravenous cannulation in children during inhalational induction of anaesthesia
D K Choudhry1, S A Stayer, R E Schwartz
1Department of Anaesthesia & Critical Care, St. Christopher's Hospital for Children, Philadelphia, PA 19134-1095, USA.
Insights
Performing early intravenous cannulation in lightly anesthetized children significantly reduces anesthesia time without increasing laryngospasm risk. This study suggests safe venous access during lighter anesthesia stages for pediatric patients.
Area of Science:
- Pediatric Anesthesiology
- Perioperative Care
Background:
- Intravenous cannulation is standard for surgical patients.
- Current practice delays pediatric cannulation until deep anesthesia to prevent laryngospasm.
Purpose of the Study:
- To compare adverse events during early (light anesthesia) versus late (deep anesthesia) intravenous cannulation in children.
- To assess the safety and efficacy of performing venous cannulation in the light stage of anesthesia.
Main Methods:
- 150 pediatric patients (2-8 years) were randomized into early (Group E) and late (Group L) cannulation groups.
- Data collected included time to cannulation, anesthetic concentration, and incidence of adverse events like laryngospasm, movement, and vital sign changes.
Main Results:
- Early cannulation (Group E) showed a shorter induction-to-cannulation time and lower halothane concentrations.
- Group E experienced more movement and greater heart rate, blood pressure, and respiratory rate fluctuations.
- No significant difference in laryngospasm incidence or cannulation success rate was observed between groups.
Conclusions:
- Intravenous cannulation can be safely performed during the light stages of anesthesia in pediatric patients.
- Early cannulation offers benefits in reduced anesthetic exposure and time without compromising safety regarding laryngospasm.
Abstract:
Intravenous cannulation is obtained in almost all patients scheduled for operative intervention under anaesthesia. In our practice, inhalational induction precedes cannulation in children in order to avoid pain and discomfort, and cannulation is delayed until the child is adequately anaesthetized in fear of precipitating laryngospasm due to painful stimulus of venepuncture in the light stage of anaesthesia. This study was performed on 150 patients between two to eight years of age to determine if there is a difference in the incidence of untoward incidents, if cannulation is performed when children are lightly anaesthetized (Early, Group E), as compared to when they are deeply anaesthetized (Late, Group L). In patients randomized to early cannulation, the results showed that there was a significantly shorter time from induction to venous cannulation, the halothane concentration was lower at the time of cannulation, there was a greater incidence of movement on cannulation and a greater incidence of changes in heart rate, blood pressure, and respiratory rate. There was no significant differences in the incidence of laryngospasm or in the success rate of intravenous cannulation between the two groups. We conclude that venous cannulation can be safely performed during the light stages of anaesthesia.