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Awake spinal or caudal anaesthesia in preterms for herniotomies: what is the evidence based benefit compared with
Andreas C Gerber1, Markus Weiss
1Department of Anaesthesia, University Children's Hospital, Zurich, Switzerland. andreas.gerber@kispi.unizh.ch
Insights
Postoperative apnoea is a risk for preterm infants undergoing inguinal hernia surgery. While awake regional anesthesia may offer benefits, current evidence is insufficient to make definitive recommendations for its use.
Area of Science:
- Pediatric Anesthesiology
- Surgical Risk Management
- Neonatal Care
Background:
- Postoperative apnoea poses a significant threat to preterm and ex-preterm infants undergoing inguinal hernia repair.
- Awake regional anesthesia techniques, including spinal and caudal anesthesia, have been proposed to mitigate these risks.
- Despite proposed benefits, many herniotomies in this population are still performed under general anesthesia without apparent adverse outcomes.
Purpose of the Study:
- To review and analyze the existing evidence on anesthesia techniques for inguinal hernia surgery in preterm infants.
- To compare the efficacy and safety of awake regional anesthesia versus general anesthesia in this vulnerable patient group.
- To provide a balanced perspective on the use of awake regional anesthesia, considering both its potential advantages and limitations.
Main Methods:
- Systematic review of studies published since 1984 concerning anesthesia for inguinal hernia repair in preterm infants.
- Evaluation of evidence comparing awake regional anesthesia (spinal, caudal) with general anesthesia.
- Consideration of advancements in pediatric general anesthesia and perioperative care.
Main Results:
- The available evidence is limited and does not permit definitive conclusions or recommendations.
- While some studies suggest awake regional anesthesia is superior, its successful implementation requires specialized expertise.
- Modern light general anesthesia combined with caudal blocks significantly reduces the incidence of postoperative apnoea.
Conclusions:
- Unequivocal conclusions regarding the superiority of awake regional anesthesia cannot be drawn due to insufficient evidence.
- Awake regional anesthesia for preterm infant herniotomy demands significant technical skill and commitment.
- Combining light general anesthesia with caudal blocks offers a safe alternative, minimizing postoperative apnoea risk with effective monitoring and management.
Purpose Of Review:
Postoperative apnoea is known to threaten preterm and ex-preterm infants undergoing surgery for inguinal hernia. Awake regional anaesthesia, initially spinal and later caudal anaesthesia have been suggested as effective techniques to avoid these complications. However, most herniotomies in this group of patients are still performed under general anaesthesia without deleterious consequences. Whereas some experts continue to claim advantages for awake regional over general anaesthesia for preterm infants, others consider awake regional anaesthesia to be an exclusive, technically difficult and unreliable technique of unconfirmed benefit.
Recent Findings:
It is appropriate to weigh the scarce available evidence that has been accumulated since 1984, and put it into perspective with new developments in paediatric general anaesthesia. The actual clinical significance of postoperative apnoea and improvements in neonatal and perioperative care and monitoring must also be reconsidered.
Summary:
The available evidence does not allow unequivocal conclusions to be drawn or recommendations to be made. Awake regional anaesthesia for herniotomies in preterm infants has been found to be superior in most studies; however, it requires technical expertise and dedication on the part of the anaesthetist and surgeon. When light general anaesthesia with modern anaesthetic agents such as sevoflurane or desflurane is combined with a caudal block, postoperative apnoea is very rare, and can easily be recognized and managed with good postoperative monitoring and therapy.
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