Comparative analysis of hypobaric versus hyperbaric bupivacaine for spinal anesthesia in day-case anorectal surgery: A prospective observational study

For patients undergoing day-case anorectal surgery, 5 mg hypobaric bupivacaine provides faster recovery and shorter discharge time than hyperbaric bupivacaine, without compromising safety. These findings suggest that hypobaric bupivacaine may be a more suitable choice in day-case settings, contributing to improved resource utilization and patient satisfaction.