Journal of pediatric urology
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To assess our study design and to obtain preliminary data for a dose-effect study on levobupivacaine for caudal analgesia in patients undergoing hypospadias repair. ⋯ Both concentrations of levobupivacaine provided excellent analgesia throughout surgery. The postoperative analgesia with both doses of levobupivacaine was found to be significantly longer lasting than previously reported. The study design, with a tight and extensive observation scheme, proved to be feasible, but given the surprisingly long-lasting analgesia, the observation period needs to be extended in future studies.