Reduction of incarcerated inguinal hernia in infants using caudal epidural anaesthesia.

Incarcerated inguinal hernias in infants are commonly encountered. Reduction with intravenous sedation using morphine and related drugs carries risks of apnoea and/or respiratory arrest, especially in small, ex-premature babies who have an increased incidence of incarceration and thus opiate use is best avoided. Caudal epidural anaesthesia is widely used as pre- and post-operative analgesia in elective inguinal herniotomy in infants. In this study we sought to determine if caudal epidural anaesthesia would allow reduction of an incarcerated inguinal hernia in the acute setting, thereby obviating the need for intravenous sedation. A retrospective review of 12 male infants, with irreducible, incarcerated inguinal hernias was done. Each hernia was successfully reduced with the help of caudal epidural anaesthesia. This group of babies was treated at The Royal Belfast Hospital for Sick Children. Twelve male infants were identified with an incarcerated inguinal hernia in whom attempted reduction, without sedation had failed. Using Bupivacaine (1 ml/kg 0.25%), placed into the caudal space, these hernias were successfully reduced non-operatively. Ages at presentation ranged from 2 to 17 weeks with a median gestational age of 36 weeks (range 29-39 weeks). Caudal epidural anaesthesia is a safe, feasible and effective method of achieving reduction of irreducible, incarcerated inguinal hernias. It is especially useful in low-birth weight, premature infants where intravenous opiate sedation is best avoided.