• Christian Breschan, Robert Jost, Haro Stettner, Georg Feigl, Rudolf Likar, and Sandra Semmelrock.
• Department of Anaesthesia, Klinikum Klagenfurt, Klagenfurt, Austria.
• Paediatr Anaesth. 2013 Dec 1;23(12):1199-204.

ObjectivesTo analyze the applicability of US-guided rectus sheath block and to find out the efficacy of analgesia provided using this method without the need for opioids in conventional Hypertrophic pyloric stenosis (HPS) surgery in infants.BackgroundThis study describes the provision of intra- as well as postoperative analgesia by the use of an ultrasound-guided rectus sheath block in infants undergoing conventional HPS surgery under general anesthesia.Methods/MaterialsThe anesthetic protocols of 26 infants undergoing HPS surgery were reviewed retrospectively.ResultsThe weight of the infants ranged from 2.6 to 4.6 kg. The rectus sheath block was regarded as successful in all patients as there was no heart rate increase upon surgical skin incision in any of the patients. Two out of 26 (7.6%) babies needed additional intraoperative rescue analgesia and were administered fentanyl at 20 and 40 min after skin incision. Two more (a total of 4; 15.3%) babies required postoperative analgesia and were administered tramadol droplets and liquid ibuprofen at 15, 120 and 150 min postoperatively. Duration of surgery was significantly longer in those two patients who required intraoperative rescue analgesia (Wilcoxon-Mann-Whitney test: P < 0.05). These were also the only two patients who received one intra- and one postoperative dose of opioid each (7.6%).ConclusionUS-guided rectus sheath block seems to be a simple and quick method for the provision of intra- and postoperative analgesia in infants undergoing conventional HPS surgery.© 2013 John Wiley & Sons Ltd.

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