The main purpose of this study is to compare blood loss at the time of laparoscopic or robotically-assisted laparoscopic myomectomy when using different amounts of dilute vasopressin solution. Myomectomy is a surgical procedure to remove fibroids from the uterus. Vasopressin is a synthetic drug used to help decrease blood loss at the time of gynecologic surgery; although very little is know about the optimal dosage and administration. The investigators plan to perform a randomized clinical trial on patients scheduled for minimally invasive myomectomy. All patients will get the same overall amount of vasopressin. Patients will be assigned by chance to one of two groups: one group will receive higher volume of a more dilute vasopressin solution. The other group will receive a lower volume of a more concentrated solution. The investigators will collect information on operative blood loss and complications related to surgery.
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Estimating Blood Loss at the End of Myomectomy - Hematocrit Percentage
Timeframe: 5 minutes post-operatively
Estimating Blood Loss at the End of Myomectomy - Surgeon Estimated Blood Loss
Timeframe: 5 minutes post-operatively
Estimating Blood Loss at the End of Myomectomy - Suction Canister Estimated Blood Loss Calculation
Timeframe: 5 minutes post-operatively