Uterine Filling Pressure in Hysteroscopy

Not Applicable

Completed

• Conditions: Fibroids
• Interventions: Device: MyoSure Hysteroscopic Morcellator Device

• Registration Number: NCT04550429
• Lead Sponsor: Northwestern University

Brief Summary

The aim of the study is to compare the outcomes of patients undergoing hysteroscopy with a Myosure device with a pressure of 60 mmHg to those using the standard of 80 mmHg.

Detailed Description

An a priori sample size calculation was completed. To achieve 80% power and an alpha of .05, the study team needed a sample size of 68 total with 34 participants in each group.The study will be a double-blind randomized control trial. Patients will be recruited based on surgery type (hysteroscopy) and consented using a written consent by the research coordinator with sufficient time to ensure patient comprehension and allow for any questions. The consent process will happen in the pre-operative appointment. Participants will then be randomized to either the standard of care of 80mmHg or the experimental pressure of 60 mmHg for uterine filling pressure via an automated randomization program. The physician performing the surgery and the patient will not know what group they are assigned to. The procedure involved in the study will be hysteroscopy. Hysteroscopy is a procedure that is used to diagnose and sometimes treat intrauterine pathologies. In order to visualize the uterus, pressurized saline is used to distend the uterus.

In this study, the specific hysteroscopic procedure will involve the removal of uterine fibroids with a MyoSure Hysteroscopic Morcellator device. These tissue samples will be collected and sent to Pathology to be weighed. During the surgery, the surgeon will be able to request an adjustment pressure if visualization is not adequate. Physicians will start with a pressure of 80mmHg. Once physician is ready to introduce the myosure hysteroscopy device, the pressure level will then be randomized. During the procedure, monitoring will be done by anesthesia through the use of pulse oximetry and measurement of vitals during the Monitored Anesthesia Care. There is also real-time monitoring of hysteroscopic fluid deficit via the fluid management system that is attached to the hysteroscopic pump. Fluid deficit can also be confirmed by the nurse who manually counts the amount of fluid used during theprocedure. Per policy, once a 2500mL deficit is reached, the procedure is terminated. After the surgery, the surgeon will fill out a questionnaire that measures the outcomes of surgeon satisfaction and visualization during the procedure. The other end points of procedure time, specimen weight, volume of normal saline used, any changes in pressure needed during the surgery, and whether the patient required Lasix post-operatively will also be collected at this time.

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study Start: 2020-08-21
• Study First Submitted: 2020-08-28
• Study First Submitted QC: 2020-09-14
• Study First Posted: 2020-09-16
• Primary Completion: 2023-09-11
• Study Completion: 2023-09-11
• Status Verified: 2024-02
• Last Update Submitted: 2024-02-28
• Last Update Posted: 2024-02-29

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 35

Inclusion Criteria

• Patients electing for operative or diagnostic hysteroscopy procedures for management of polyps and fibroids
• Age equal to or greater than 18
• Ability to understand and willingness to sign consent form. We will include non-English speaking patients in this study

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Exclusion Criteria

• Patients electing for operative and diagnostic hysteroscopy procedures with polyps and fibroids
• Patients under the age of 18

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
80 mmHg MyoSure Hysteroscopic Morcellator Device	MyoSure Hysteroscopic Morcellator Device	This is the standard of care pressurization for this procedure at Northwestern Medicine and will be the control group for the study
60 mmHg MyoSure Hysteroscopic Morcellator Device	MyoSure Hysteroscopic Morcellator Device	The rationale for this experimental arm is that the pressurization can result in excess fluid being absorbed by the patient without a substantial benefit to surgical outcome. Minimizing the pressure from 80 mmHg (which is standard of care) to 60 mmHg used during this procedure may optimize outcome without compromising visualization of the surgeon. The research procedure will take place in the operating room of the minimally invasive gynecologic surgery department.

Primary Outcome Measures

Name	Time	Method
Procedure Time	Through study completion, an average of 1 year	Duration of surgery to assess if pressure changes affects length of surgery time.
Physician Survey to assess visualization	Through study completion, an average of 1 year	Determining whether lowering pressure on hysteroscopic morcellator during hysteroscopy, using block randomization, affects visualization for surgeon using a post-op survey for surgeon to gauge outcomes.
Lasix administered post-operatively	Through study completion, an average of 1 year	Noting yes or no if Lasix was administered post-operatively.
Specimen Weight	Through study completion, an average of 1 year	Specimen will be sent to pathology to note weight in grams.
Amount of Fluid	Through study completion, an average of 1 year	Volume of normal saline used during procedure.
Change in pressure was needed	Through study completion, an average of 1 year	Noting if pressure needed changing by surgeon during the procedure.

Trial Locations

Locations (1)

Center for Comprehensive Gynecology; 🇺🇸 Chicago, Illinois, United States