Hartmann's Procedure

Hartmann's procedure is a sigmoid colectomy with creation of an end colostomy and closure of the rectal stump. It is the operation of choice when a colorectal resection is needed but a primary anastomosis would be unsafe — typically due to gross contamination, hemodynamic instability, malnutrition, or local tissue conditions that preclude safe healing.

Classic indications are perforated diverticulitis with peritonitis (Hinchey III and IV), obstructing left-sided colon cancer in an unstable patient, fulminant Clostridioides difficile colitis with perforation (though total colectomy is more common in this setting), and traumatic injuries of the rectum or sigmoid where primary anastomosis is risky. The Hartmann's is also performed when a planned anastomosis fails intraoperatively due to poor tissue quality.

Modern alternatives — primary resection with anastomosis (with or without diverting loop ileostomy), or laparoscopic peritoneal lavage for selected Hinchey III diverticulitis — have narrowed the indications somewhat, but Hartmann's remains a safe default for the unstable or contaminated patient.

Workup depends on the indication. For perforated diverticulitis or obstructing cancer, CT is the standard imaging — it identifies the level of pathology, evaluates for free air, abscess, or fistula, and helps the surgeon plan resection extent. CBC, BMP, lactate, type and crossmatch, and coagulation studies are standard preoperatively.

Marking by an enterostomal therapy nurse before operation is ideal whenever feasible — stoma site selection at the time of emergency surgery is a known source of morbidity. Broad-spectrum antibiotics covering gram-negative and anaerobic organisms are started preoperatively. Foley catheter and ureteral stents (selectively, for re-operative pelvic surgery) may be appropriate.

Lower midline laparotomy (or laparoscopic approach in selected stable patients) provides exposure. The abdomen is explored, peritoneal contamination evacuated, and the level of pathology confirmed. The sigmoid colon is mobilized along the white line of Toldt from the left lower quadrant up to the splenic flexure as needed for tension-free stoma maturation.

The proximal point of resection is selected in healthy, well-vascularized colon — typically descending colon at the level of the pelvic brim or higher. The distal point of resection is the upper rectum (at the level of the sacral promontory). The mesentery is divided between clamps and ligated; the bowel is divided with a linear stapler proximally and distally.

The rectal stump is closed with a linear stapler (a TA or GIA load) or by oversewing in two layers. The stump is left in the pelvis, typically with the staple line tagged with long monofilament sutures to facilitate later identification at reversal. Some surgeons drop a few interrupted sutures into the pelvis or tag the stump to the sacral promontory to help orient subsequent dissection.

The proximal colon is brought out through a previously marked stoma site in the left lower quadrant. The fascial opening is sized to admit two fingers comfortably — too tight will cause ischemia, too loose risks parastomal hernia. The stoma is matured with interrupted absorbable sutures (3-0 Vicryl) approximating bowel wall to dermis. The abdomen is irrigated and closed in standard fashion.

Hartmann's reversal is planned no sooner than 3–6 months after the index operation to allow inflammation to resolve. Preoperative workup includes flexible sigmoidoscopy of the rectal stump to confirm patency and rule out residual disease (especially important if the indication was malignancy), and contrast enema to assess stump length and anatomy. Stoma function, patient nutrition, and physiologic fitness must be optimized.

Reversal is technically more difficult than the index operation. Adhesions are common. Identifying the rectal stump requires patience and a sigmoidoscope inserted from below can be used to insufflate the stump and aid identification. A circular stapled colorectal anastomosis is the standard reconstruction. Diverting loop ileostomy is sometimes added for protection in borderline anastomoses.

A significant fraction of Hartmann's procedures are never reversed — patient frailty, comorbidities, or patient preference makes the second operation prohibitive. This reality is part of the calculus when choosing Hartmann's vs primary anastomosis with proximal diversion at the index operation.

Operative complications include bleeding, ureteral injury (especially in re-operative or inflamed pelvis), bowel injury, and the standard anesthetic and cardiopulmonary risks of emergency laparotomy. Postoperative complications include surgical site infection (high rate given contamination), intra-abdominal abscess, ileus, anastomotic leak (not applicable at index operation; relevant at reversal), parastomal hernia, stomal stenosis or retraction, and pelvic abscess from rectal stump leakage.

Long-term complications include incisional hernia, parastomal hernia (incidence 30–50% over time), and complications of the unreversed Hartmann's — stump diversion colitis, mucus discharge per rectum, and the psychosocial burden of an end colostomy. On the boards, examiners commonly explore the decision between Hartmann's vs primary anastomosis with diversion, the management of the patient who has a leak from the rectal stump, and the workup before considering reversal.