Hand-Assisted Hartmann’s Reversal



Hand-Assisted Hartmann’s Reversal


John P. Ricci

David E. Rivadeneira






PREOPERATIVE PLANNING

Patients undergoing a hand-assisted Hartman’s reversal should undergo all necessary preoperative preparations required for open and laparoscopic surgeries, including the following:



  • Colonoscopy through the colostomy


  • Colonoscopy through the rectum


  • Retrograde contrast studies through the rectum and colostomy site

These studies should allow the surgeon to evaluate the length and the quality of the rectal/Hartman’s stump, and to evaluate the position of the splenic flexure. The surgeon can determine whether splenic flexure mobilization is necessary to create a tension-free anastomosis. The surgeon can also help decide whether completion sigmoid resection at the rectosigmoid junction is required to perform the appropriate therapeutic procedure in the case of diverticular disease. It is imperative that the remaining colon and rectum is endoscopically surveyed so that no synchronous pathology is present. Other preoperative considerations include the following:



  • Bowel preparation (per surgeon’s preference)


  • Preoperative antibiotics


  • Preoperative deep venous thrombosis prophylaxis


SURGERY


Positioning

Patients are positioned on an electric bed in the modified Lloyd-Davies/lithotomy position. A proctosigmoidoscopy is performed to wash out any retained stool or mucus. After the abdomen is prepped with chloraprep or Betadine, a large sheet of antibiotic-impregnated adhesive drape (Ioban) is placed over the entire abdomen with a folded 4 × 4 gauze over the colostomy site. This will allow for minimal cross contamination to other areas of the abdominal wall. Laparoscopic monitors are placed to the right and left side of the patient. Standard bowel graspers, dissectors, sheers, and energy-based devices should be chosen and used as per surgeon preference during laparoscopic procedures.


Technique

There are several approaches to a hand-assisted reversal of a Hartman’s procedure. The most common technique involves the use of the colostomy site as the location of the hand-assist port. The colostomy is dissected away from the mucocutaneous junction, with an incision that extends both medially and laterally for several centimeters around the colostomy. Detaching the colon from the subcutaneous tissue is often a fairly unencumbered dissection because of the high incidence of paracolostomy hernia. Entrance into the abdomen and placement of the hand through the hand-assisted device is also aided by this parastomal hernia and fascial separation. Direct visualization into the abdomen can be performed from the incision and local adhesions can be dealt with effectively, particularly those intimate with the previous midline incision from the initial operation. Once the colostomy has been detached from the abdominal wall and the colon resected to a healthy bowel, the distal end is prepared for anastomosis in standard manner with a purse string stitch and the anvil of a circular stapler (Fig. 54-1). This maneuver will allow the colon to be reduced into the abdominal cavity without contamination. The healthy bowel can just be stapled across and prepared for anastomosis after complete dissection. If the underlying abdominal wall is clear of adhesions, the hand-assist port is placed into the colostomy site incision and pneumoperitoneum is achieved (Fig. 54-2). One to three 5-mm trocars are placed in the right lateral abdomen and suprapubic area. An umbilical port can also be placed to provide a more traditional camera angle. Frequently, the camera will need to be introduced through the hand-assist port to survey the abdomen and to perform initial adhesiolysis. The surgeon can approach the operation from a position in between the legs or on the patient’s right side with the right hand through the hand-assisted device and the left hand using a laparoscopic instrument. The assistant will be positioned between the legs or on the patient’s right side. This orientation will allow for complete descending colon and splenic flexure mobilization with the distal end already prepared. The procedure should be performed as if it were open. The ureter is identified in the retroperitoneum, and the rectal stump is dissected and prepared in standard manner. At times, it may be necessary to remove partial or complete remnant sigmoid colon. This step can usually be achieved if the surgeon stands on the patient’s left-hand side and inserts the left hand through the device to grasp the sigmoid
colon or rectal stump. Additional dissection can be undertaken with the right hand with laparoscopic instruments through the trocars on the right side. The specimen is extracted through the hand port. A standard stapled anastomosis is created with a circular stapler.

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May 5, 2019 | Posted by in GENERAL | Comments Off on Hand-Assisted Hartmann’s Reversal

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