Task Analysis of Laparoscopic and Robotic Procedures

Task Analysis of Laparoscopic Removal of Large Submucous Myoma
Gynecology / Aug 19th, 2021 2:08 pm     A+ | a-

Task Analysis of Laparoscopic Submucous Myomectomy

Dr. Rini Nikhil

  1. General anesthesia is to be given.
  2. The patient should be given a lithotomy position and bladder drained.
  3. Painting and draping of abdomen and perineum to be performed
  4. Connect and check the monitor, CCD, camera, light source.
  5. Do focusing at a 10cm distance for a 10mm telescope after completing white balancing.
  6. Insufflator is turned on to remove air from the tubing, preset pressure is kept at 15mmHg.
  7. Connect and set up required instruments – bipolar/ harmonic, with the electrosurgical generator.
  8. Attach and verify the suction irrigation system.
  9. Positioning of surgical team and monitor in accordance with the hierarchy and port positions; e.g.: If left-sided ipsilateral ports are used, operating surgeon stands on the left side of the patient, camera assistant on surgeon’s  right side and two assistant surgeons one on the right side and second person for holding uterine manipulator.
  10. Take Veress needle and check patency and spring action.
  11. The primary port position is decided – supraumbilical for palpable uterus (14- 18 weeks of the gravid uterus) and inferior crease of the umbilicus for normal-sized uterus (less than 14 weeks size).
  12. Take two Allis forceps to evert and hold the lower margin of the umbilicus
  13. Use No. 11 blades to place a small vertical stab wound on the skin.
  14. Assess the abdominal wall thickness and add 4cm to it for distance to hold the Veress needle.
  15. Hold the Veress needle like a dart.
  16. Lift the abdominal wall by its full thickness using thenar and hypothenar regions of the hand and four fingers.
  17. Insert the Veress needle at a 90-degree angle to the lifted abdominal wall and 45-degree to the body of the patient, tip pointing towards the anus.
  18. Proceed with insertion till two clicks are felt, maintaining 45-degree.
  19. Confirm correct placement of Veress needle by irrigation, aspiration, hanging drop, and plunger test.
  20. Connect the insufflator tubing to the Veress needle, turn on CO2, and allow flow at 1 liter per minute with a preset pressure of 12-15mmHg.
  21. Observe and analyze the Quadro manometric indicators
  22. Once the desired pneumoperitoneum is attained remove the Veress needle.
  23. Extend the skin incision to 11mm horizontally; if required, by marking the circumference of the 10mm cannula at the port site.
  24. Hold 10mm port by the right technique like a pistol, insert it perpendicular to the inflated abdominal wall by gentle screwing movements from the elbow level and tilting it towards the pelvis when there is loss of resistance.
  25. Confirm intra-abdominal placing of the port by the hissing sound of air escaping through the eye of the trocar.
  26. Increase the flow rate of insufflation to 6litre/minute after connecting the gas tubing to the primary port.
  27. Insert telescope, inspect entry point, rule out any bowel or vessel injury and perform diagnostic laparoscopy.
  28. Keep the camera cable at 6 O’clock and the light cable at 12 O’clock positions.
  29. Convert the table position to 30-degree Trendelenburg.
  30. Place the lateral ports following the baseball diamond concept, cutting along Langer lines and inserting perpendicular to the abdominal wall.
  31. Assess the relation of fibroid with the uterus and other pelvic structures.
  32. Dilute 5ml (5IU per ml) Vasopressin in 100ml saline and inject it at the maximum prominent part of the uterus, into the myometrium using an aspiration needle.
  33. Look for blebbing and pallor on fibroid with vasopressin injection.
  34. Perform hysterotomy by an oblique or sagittal incision through the serosa and myometrium of the fundus, using a Harmonic scalpel or low voltage monopolar cutting current, avoiding the cornual region and fallopian tubes.
  35. Open the myometrium using a harmonic scalpel, myoma screw, and myoma rod till a plane of dissection is obtained.
  36. Enucleate the myoma by manipulating it using a myoma screw each time inserted it towards the base of the myoma in the incision than the center of the visualized myoma for better traction.
  37. Use harmonic scalpel or monopolar cutting in the other hand for aiding dissection, without avulsing but carefully cutting to avoid bleeding.
  38. Repair the endometrial cavity using continuous No 1 Vicryl sutures through the basal layer and minimal myometrial tissue, without entering the endometrial cavity.
  39. Close the inner myometrium by continuous suturing with No: 2-0 Vicryl (50cm) or Barbed sutures completely obliterating the dead space to avoid hematoma formation.
  40. Close the outer myometrium and serosa by baseball or continuous suturing with No: 1 Vicryl or absorbable violet Braided Suture (returning with the same suture material)
  41. Terminate by surgeon’s knot with the tail of inner layer suture.
  42. Convert one of the ports, preferably closer to the pelvis, into 15mm.
  43. Check and insert the morcellator through the 15mm port.
  44. Proceed with morcellation by holding the myoma by tenaculum, feeding it to the motorized morcellator, taking care not to move the morcellator towards the tissue, instead, keeping the tissue being morcellated away from the abdominal viscera to avoid injury.
  45. Do irrigation and aspiration, confirm hemostasis, and proceed with port closure.
  46. Do closure of 15mm port used for morcellation with No-1 Vicryl using laparoscopic Cobbler needle, the cannula of Veress needle or suture passer, under visualization and avoiding tension on the sutures.
  47. Remove the instruments and the other ports except for the one for the telescope.
  48. Deflate the abdomen completely keeping the telescope inside, remove the cannula, And then the telescope.
  49. Close the skin incision with staplers and do dressing.
Steps 1- 30: Access
Steps 31-44: Myomectomy
Steps 45-49: Closure 
Dr. Shakuntala Parikh
Aug 19th, 2021 2:27 pm
Very nicely written task analysis. It will be very useful for beginners to memorize the steps of laparoscopic submucous myomectomy surgery.

Thanks for sharing.
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