Conclusion
This feasibility study confirmed that ESP block is a safe and effective technique under MAC sedation in a multimodal analgesic regimen for SICD implantation and demonstrated a small but significant decrease in intraoperative and postoperative opioid consumption that may be of clinical importance in high-risk patients. Larger studies are needed to further investigate and validate the utility and more importantly the characteristics (ie. volume and concentration) of ESP blocks as a standard for SICD implantation.