Laparoscopic Segmental Colectomy for Functional Constipation
Rectal biopsy and anorectal manometry were both normal in this patient with functional constipation.
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Colonic manometry identified a 40 centimeter segment of dysmotile colon.
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Contrast enema demonstrated a grossly dilated distal colon.
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The authors have previously published a systematic approach to management of children with severe functional constipation, with patients classified into groups; this patient's findings were consistent with Group D.
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Initial Malone appendicostomy improved symptoms, but after several months the patient began suffering from impactions despite multiple colonic irrigation regimens.
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Preoperative bowel preparation was used to ensure decompression of the distal colon at laparoscopy.
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A 5 millimeter optical port is placed supraumbilically and to the left to avoid injury to the appendicostomy.
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The left colon demonstrated a grossly dilated redundant sigmoid colon which funnels into a more normal caliber rectum above the peritoneal reflection.
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Dissection begins at the pelvic brim using a vessel sealing device to create a mesenteric window, proceeding in a caudal direction and staying close to the bowel.
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The position of the ureters is established to ensure they lie away from the dissection plane.
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Once normal caliber colon is encountered above the peritoneal reflection, the rectum is transected using an endoGIA stapler.
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Several staple fires may be needed depending on the degree of dilatation.
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After stapling, verification is performed to ensure that the ureter has not been inadvertently caught in the staple line.
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In this case, taking down the splenic flexure was not required to achieve sufficient mobility of the normal caliber colon to reach the pelvis.
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The right lower quadrant port incision is extended to approximately 2.5 centimeters for specimen extraction.
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A wound protector is applied to the right lower quadrant port site during specimen extraction.
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The anvil component of an EEA circular stapler is placed into the lumen of the healthy colon and secured with a prolene purse string suture.
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After returning the colon to the peritoneal cavity, a laparoscopic cap is applied over the wound protector to allow reestablishment of pneumoperitoneum.
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The orientation of the colon is examined to ensure there is no twist as it passes into the pelvis.
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After resection, the colon should lack redundancy and form a direct path into the pelvis.
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The rectum is calibrated using scissors that come with the circular stapling device.
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The EEA trocar is deployed adjacent to the rectal staple line until the orange tying area is seen.
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The anvil is engaged into the trocar until a characteristic snap is felt.
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The EEA device is closed until appropriate tissue compression is attained before firing.
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Two complete doughnuts of colonic tissue should be present after firing, indicating a satisfactory anastomosis.
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The integrity of the anastomosis is examined by filling the pelvis with saline and insufflating air into the rectum; absence of bubbling indicates no leak.
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The patient was discharged on the 4th postoperative day following resumption of bowel function and establishment of diet and appendicostomy flushes.
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The flush regimen was dramatically improved after resection, with plans to attempt transition to oral laxatives.
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How to Administer a Rectal Irrigation at Home
Emily Rice is a nurse with the Division of Colorectal and Pelvic Reconstruction at Children's National Hospital.
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Rectal irrigations can help a child empty their colon of stool and gas.
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