Effectiveness of ultrasound-guided rhomboid intercostal and sub-serratus block for perioperative analgesia in male patients undergoing combined power-assisted liposuction with pull-through excision of the gland for breast definition and reshaping

The newly introduced ultrasound guided interfacial rhomboid intercostal and sub-serratus (RISS) block technique demonstrated promising efficacy in managing perioperative pain among patients undergoing abdominal and thoracic procedures. Thus, this study investigated the efficiency of bilateral ultrasound-guided RISS (US-RISS) as a perioperative pain control technique in male subjects receiving gynecomastia surgery.