Delorme
Abdel Rahman A. Omer
Ian K.H. Scot
Indications/Contraindications
Rectal prolapse is a distressing condition that is usually associated with incontinence and bowel dysfunction. There are multiple operations that correct the anatomical disability with the possibility of improving the function. The Delorme procedure is one of the modalities of treating full thickness external rectal prolapse. In elderly patients and those who are not fit for major operations, the Delorme procedure has low morbidity and mortality rate compared to the other available procedures. It can also be offered to those patients who do not wish to go through a major procedure for reasons other than fitness.
The Delorme procedure should not be offered to patients with internal prolapse or intussusception or, as per the author’s experience, those individuals in whom the distance between the distal part of the prolapse and the dentate line is fixed (due to previous surgery [e.g., procedure for prolapse and hemorrhoids], phenol injections, low rectal or anal pathology) or if the distance from the dentate line to the distal part of the prolapse is longer than 3 cm. It is also contraindicated for those patients who suffer from diarrheal bowel dysfunction and those individuals who cannot be properly positioned on the operating table. Attention should be paid to patients who suffer with inflammatory bowel diseases and those patients with a history of rectal irradiation, but each case should be individualized.
Patients should be made aware of the high recurrence rate, the possibility of redoing the procedure if needed and the fact that not much assurance can be given regarding the improvement of continence.
Preoperative Planning
Patients who are offered the Delorme procedure for rectal prolapse should be fully investigated in order to exclude other colonic pathologies that can precipitate rectal prolapse such as low sigmoid or rectal tumors. Other than the full office (outpatient’s clinic) assessment including digital examination, rigid sigmoidoscopy, and proctoscopy, patients should have an appropriate endoscopic examination (flexible sigmoidoscopy or colonoscopy) or a barium enema. Anal physiological studies and endoanal ultrasound tests are not a mandatory part of our routine preoperative assessment.
Patients should be given information leaflets, be well informed and consented about the procedure and told that the main objective of the procedure is treatment of the external rectal prolapse.
Two phosphate enemas administered 2 hours before the procedure are used for bowel preparations. Additional enemas can be given as necessary.
Prophylactic antibiotic are administered upon induction of general endotracheal anesthesia (the authors use gentamicin and metronidazole). Thromboembolic prophylaxis should be routinely employed in all patients. In general sequential compression stockings and if not medically contraindicated heparin or low molecular weight heparin may be employed.
Surgery
Anesthesia
The Delorme procedure is amendable to different modalities of anesthesia. Although general anesthesia is the most preferred modality, it is safe and acceptable to use spinal anesthesia. High-risk patients can have the procedure under caudal block or even local anesthesia with or without intravenous sedation.
Positioning
The author usually carries out the Delorme procedure with the patient in Lithotomy position. However the procedure can also be performed while the patient is in the prone jackknife or even the left lateral (SIMMs) position. The choice of position should be based upon the patient’s ability to be in the surgical position for the duration of the operation, surgical access and patient’s cardiac and respiratory needs.
Urinary bladder catheterization should be initiated under aseptic conditions.