EP073 Comparison of success rate with short axis v/s long axis ultrasound-guided caudal block in children – a randomised controlled trial

<h3>Background and Aims</h3> Epidural, caudal block is commonly used for paediatric infra-umbilical surgeries under General Anaesthesia (GA), but the landmark technique is associated with many complications; hence, ultrasound-guided blocks are in vogue to overcome them. This study compares first-attempt success rates between short and long-axis ultrasound guided caudal blocks. <h3>Methods</h3> In this prospective randomized trial, 136 ASA I/II paediatric patients aged 0–6 years, undergoing infra-umbilical surgeries under GA, were randomly assigned to two groups: Group S (short-axis) and Group L (long-axis). The caudal blocks were given under USG guidance by an experienced provider in short and long axis to note the first attempt success rate, block performing time and any associated complications. <h3>Results</h3> Our study revealed that the first attempt success rate was comparable for Group S and Group L, with a p-value of 0.836. On comparing the two groups regarding the number of attempts for block (p=0.719), the mean time for performing the block (p=0.286), and associated complications (p=0.722), no statistically significant difference was found. <h3>Conclusions</h3> Ultrasound-guided caudal block with short axis v/s long axis has a comparable first-attempt success rate in children &lt; 6 years. The block performing time, and the associated complications are comparable as well in both the groups.