Study on the PECS II block with postoperative pain in patients undergoing single port robot-assisted transaxillary thyroidectomy: double-blinded randomized controlled trial

INTERVENTION: CONDITION: Neoplasms PRIMARY OUTCOME: Visual analog scale SECONDARY OUTCOME: The Korean version of QoR‐15, QoR‐15K INCLUSION CRITERIA: ‐Patients aged 19 to 60 years who are scheduled to undergo single‐port robot thyroidectomy (lobectomy or total thyroidectomy) ‐Patients with cancer stages T1 or T2 (less than 4 cm without invasion of surrounding tissue) when thyroid cancer is suspected in the preoperative examination ‐Patients with nodules with a maximum length of less than 4 cm based on ultrasonography if thyroid cancer is not suspected in the preoperative examination ‐Patients with a BMI greater than or equal to 18.5 and less than 30.0.