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Perioperative complement activation in neonates under halothane or fentanyl anaesthesia
1Department of Anaesthesiology, Kobe University School of Medicine, Japan.
Acta Anaesthesiologica Scandinavica
|July 1, 1992
Summary
Surgical trauma activates the complement system (a key immune pathway) in neonates. Fentanyl anesthesia showed higher complement activation (C3a, C5a) than halothane during abdominal surgery.
Area of Science:
- Anesthesiology
- Immunology
- Neonatal Surgery
Background:
- Perioperative complement activation is a significant concern in surgical patients.
- Neonates undergoing surgery may exhibit unique responses to anesthesia and trauma.
- Understanding complement activation is crucial for optimizing neonatal surgical care.
Purpose of the Study:
- To investigate perioperative complement activation in neonates undergoing abdominal surgery.
- To compare complement activation levels between halothane and fentanyl anesthesia.
- To assess the impact of surgical trauma on the neonatal immune system.
Main Methods:
- Studied 18 neonates (1-17 days old) undergoing elective abdominal surgery.
- Randomly assigned neonates to halothane or fentanyl anesthesia groups.
- Measured plasma C3a, C5a concentrations, and peripheral leucocyte counts perioperatively.
Main Results:
- Plasma C3a and C5a concentrations were significantly higher in the fentanyl group compared to the halothane group.
- Abdominal surgical trauma induced complement activation in both groups, more pronounced with fentanyl.
- Leukocyte counts showed changes, indicating an inflammatory response.
Conclusions:
- Abdominal surgical trauma triggers complement activation in neonates, irrespective of anesthesia type.
- Fentanyl anesthesia is associated with a greater degree of perioperative complement activation than halothane.
- Further research is needed to clarify the clinical significance and mechanisms of neonatal perioperative complement activation.