Presented by:
Jayden Boxeur
Affiliations:
University of British Columbia
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What Is Modified Uterine Manipulator Technique for Hysterectomy of Uterus with Inaccessible Endometrial Cavity?
The modified uterine manipulator technique is an alternative method of achieving safe uterine manipulation during laparoscopic hysterectomy when scarring, previous endometrial ablation, cervical anatomy, or an inaccessible uterine cavity prevents placement of a standard manipulator. The technique uses cervical stay sutures and a colpotomy cup to securely position the manipulator without requiring conventional access to the endometrial cavity. Here’s what it involves:
- Assessment of the Uterine Cavity: The cervix and uterine cavity are carefully assessed to determine whether a standard uterine manipulator can be safely inserted.
- Alternative Manipulator Selection: When conventional placement is not possible, a manipulator with a colpotomy cup can be adapted to provide uterine control without relying on deep intrauterine insertion.
- Cervical Stay Sutures: Sutures are placed through the cervix and passed through the manipulator to securely anchor the device.
- Colpotomy Cup Placement: The cup is positioned firmly within the vaginal fornices to define the cervicovaginal junction and provide a clear surgical landmark.
- Uterine Manipulation: The secured device allows the uterus to be elevated and moved during laparoscopic dissection, improving exposure and surgical orientation.
- Colpotomy Guidance: The cup helps delineate the appropriate plane for colpotomy while maintaining separation between the operative field and nearby structures such as the ureters.
- Completion of Hysterectomy: Once the uterine vessels and surrounding attachments are divided, the colpotomy is completed, the uterus is removed, and the vaginal cuff is closed.
This modification can provide effective uterine manipulation and preserve the advantages of a colpotomy cup when standard intrauterine manipulator placement is difficult or unsafe.
What are the risks of Modified Uterine Manipulator Technique for Hysterectomy of Uterus with Inaccessible Endometrial Cavity?
Although the modified technique can avoid difficulties associated with an inaccessible uterine cavity, both manipulator placement and laparoscopic hysterectomy carry potential complications.
- Uterine Perforation: Attempts to sound the uterus or insert an intrauterine device into a scarred or inaccessible cavity can result in partial or complete perforation.
- Cervical Injury: Placement or tensioning of cervical stay sutures may cause cervical tearing, bleeding, or tissue trauma.
- Manipulator Displacement: Inadequate fixation may allow the manipulator or colpotomy cup to shift during surgery, potentially affecting surgical orientation.
- Bladder or Ureteral Injury: Previous Caesarean section, scarring, and distorted anatomy can increase the difficulty of identifying and protecting the urinary tract.
- Bleeding: Injury to the uterine vessels or surrounding pelvic vasculature can result in significant bleeding.
- Vaginal Injury: Incorrect positioning of the colpotomy cup or dissection outside the intended plane may cause vaginal trauma.
- Bowel Injury: Adhesions or altered pelvic anatomy from previous surgery may place the bowel closer to the operative field.
- General Surgical Risks: Infection, blood clots, anesthesia-related complications, postoperative adhesions, and rarely conversion to open surgery are possible.
Careful assessment before manipulator placement, avoidance of force when the uterine cavity cannot be safely accessed, secure placement of cervical stay sutures, and clear positioning of the colpotomy cup can help reduce these risks and facilitate safe completion of the hysterectomy.