What Technique for Caudal Block in Children: Conventional or Ultrasound-guided

The primary endpoint was the success rate of each technique. We also collected the time taken for each technique, the number of punctures, and the incidence of complications (subcutaneous infiltration, intravascular injection). Children were randomized to receive a caudal block based on anatomical landmarks (group C) or ultrasound-guided (group E) at a dose of 1 ml/kg of 0.25% bupivacaine, not exceeding 20 ml.