A newly published network meta-analysis included 69 randomized controlled trials (4636 patients) that compared 10 regional analgesic techniques for the management of perioperative pain in pediatric patients undergoing inguinal hernia repair. Two techniques stood out that had: 1) the longest time to the first rescue analgesic and 2) the least rescue analgesic requirement for pediatric inguinal surgeries.

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https://journals.lww.com/anesthesia-analgesia/Fulltext/9900/Analgesic_Effects_of_Regional_Analgesic_Techniques.489.aspx