“…Most cases have involved abdominal procedures, with some reports of ESPB in thoracic, cardiac, and urological procedures, reporting effective postoperative analgesia with a decrease in rescue-analgesia requirements. 8,19,33,37,42,48,56,64,67,75 In all cases, ESPB was performed under general anesthesia and preoperatively. While single-shot doses were used in day-surgery cases, catheterization and intermittent boluses have been reported for thoracic and cardiac procedures for postoperative analgesia.…”