Comparison of Concentration of Vasopressin During Robot-assisted Laparoscopic Myomectomy

Inclusion Criteria: * Informed consent * Age: 19-60 year-old women * Plan of myomectomy for uterine leiomyomas * Leiomyoma Subclassification System 2-7 (robot-assisted laparoscopic myomectomy is possible) * American Society of Anesthesiologists Physical Status classification 1 or 2 * A person who understands the contents of the clinical trial, is cooperative with the trial, and is judged to be able to participate until the end of the study Exclusion Criteria: * Pregnancy or breastfeeding * A single diameter of uterine leiomyoma is greater than 12 cm or more or multiple leiomyomas with more than five * Suspicious disease of uterine malignancy * Patient with has a history of pelvic surgery (cesarean section, myomectomy, etc.) and is expected to have severe pelvic adhesion * A person who is hypersensitive or contraindicated to vasopressin * A person who is hypersensitive or contraindicated to tranexamic acid * Considered as inappropriate by the researcher's judgment