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Duodeno-duodenostomy for Duodenal Atresia

Video Published 2021-06-11 Updated 2026-05-19

Topic Overview

A surgical demonstration of duodeno-duodenostomy for type III duodenal atresia in a two-day-old male infant. The procedure addresses the atresia using a diamond-shaped anastomosis technique, with the proximal opening placed at the most dependent part and the distal opening on the anterolateral surface to avoid injury to the biliary and pancreatic ducts. Intraoperatively, a malrotation is identified and addressed by widening the mesenteric root and positioning the colon to the left with the duodenojejunal junction in a straight direction. The case demonstrates systematic inspection for additional atresias, confirmation of distal patency with saline injection, and completion with appendectomy.

Key Takeaways

Diamond-shaped anastomosis: proximal opening at most dependent part, distal on anterolateral surface to protect biliary ducts (2:20)
Always inspect entire bowel for additional atresias and check distal patency with saline injection before completing anastomosis (0:50)
Malrotation commonly coexists with duodenal atresia; address by widening mesenteric root while visualizing SMA vessels (1:00)
Posterior wall uses full-thickness interrupted 5-0 sutures from inside; anterior wall uses extramucosal sutures from outside (4:10)

Inside this episode

Kai, the Library's AI content creator, listened to this episode and mapped who's speaking, the chapters, key claims, and cases. Every item links to the exact moment in the recording.

AI-enriched

Who's speaking

Speaker 1 — host

Chapters

0:00Introduction and Initial Exposure — Case introduction of two-day-old boy with duodenal atresia. Transverse right abdominal incision made, dilated stomach and proximal duodenum visualized, bowel exteriorized for inspection revealing malrotation and type III duodenal atresia.
1:30Mobilization and Exposure of Atresia — Mesenteric root evaluated, duodenum and duodenojejunal junction freed from posterior abdominal wall, lateral attachments dissected to expose proximal and distal atretic segments with pancreas between them.
3:00Creation of Anastomotic Openings — Proximal opening created at most dependent part with stay sutures, distal limb opened anterolaterally to avoid biliary and pancreatic duct injury with bile noted on opening, creating two diamond-shaped openings with perpendicular axes. Distal patency confirmed with saline injection.
5:00Duodeno-duodenostomy Anastomosis — Posterior wall sutured from inside using 5-0 absorbable interrupted sutures starting at middle and advancing to angles in extramucosal fashion. Anterior wall completed from outside in extramucosal fashion from angles to middle, with proximal pouch brought down to meet distal limb.
6:20Malrotation Correction and Closure — Mesenteric root widened with careful dissection around superior mesenteric vessels. Appendectomy performed. Bowel returned to abdomen with colon positioned to left side and duodenojejunal junction in straight direction.

Key claims

0:00Patient is a two-day-old boy with duodenal atresia — Speaker 1
0:20Transverse right abdominal incision allows access to duodenum and small intestine — Speaker 1
1:00Duodenal atresia type III is present — Speaker 1
1:00Malrotation is identified intraoperatively — Speaker 1
0:50Small and large intestine should be inspected for any other level atresia or rotational anomalies — Speaker 1
2:20The proximal opening should be made at the most dependent part — Speaker 1
2:45The distal limb should be opened on the anterolateral surface to avoid injury to the opening of the common bile and pancreatic ducts — Speaker 1
3:05Bile coming out on opening of the distal limb confirms communication with biliary system — Speaker 1
3:15The technique creates two diamond-shaped openings with perpendicular axes — Speaker 1
3:30Distal patency should be checked by injecting saline and observing its filling to the whole bowel — Speaker 1
3:50The anastomosis uses opposing borders of the diamonds for the posterior wall and far-facing borders for the anterior wall — Speaker 1
4:10Posterior wall suturing starts from the inside until angles are joined, then anterior wall is sutured from the outside — Speaker 1
4:405-0 absorbable sutures are used for the anastomosis — Speaker 1
4:35Posterior wall sutures are full thickness interrupted sutures — Speaker 1
5:00Angle sutures are placed from the outside in an extramucosal fashion — Speaker 1
5:40Anterior wall sutures are placed in an extramucosal fashion starting from the angles and working towards the middle — Speaker 1
5:55The proximal dilated pouch is brought downwards to meet the distal limb during anterior wall closure — Speaker 1
6:20Widening of the root of the mesentery is performed to address malrotation — Speaker 1
6:25Superior mesenteric vessels should be visualized during mesenteric root widening — Speaker 1
6:30Peritoneal covering is carefully dissected to allow adequate widening of mesenteric root — Speaker 1
6:40Appendectomy is performed as part of the procedure — Speaker 1
6:48Final bowel positioning places colon in the left side and duodenojejunal junction in a straight direction — Speaker 1

Cases discussed

0:00Two-day-old male infant with type III duodenal atresia and malrotation treated with duodeno-duodenostomy and correction of malrotation

This episode was analyzed and enriched by Kai, the Library's AI content creator. Every item links to the moment it comes from — click a timestamp to listen in context.

Diamond Anastomosis and Duct Protection in Duodenal Atresia Repair

The episode's teaching points arranged as a structured lesson, building from the basics up to the finer points. Written by Kai from the episode transcript and reviewed before publishing.

For trainees · Teaching arc · AI-written, human-reviewed

This demonstration walks through duodeno-duodenostomy for type III duodenal atresia in a two-day-old, emphasizing the technical decisions that prevent both immediate complications and long-term obstruction.

Survey the entire bowel before committing to repair

The small and large intestine should be inspected for any other level atresia or rotational anomalies 0:50. In this case, malrotation was identified intraoperatively alongside the duodenal atresia 1:00. Finding a second atresia after you have already completed one anastomosis changes the operation entirely — and missing malrotation leaves the patient at risk for midgut volvulus. The inspection happens early, with the bowel exteriorized, before you have committed to the duodenal repair.

Open the distal limb where the ducts are not

The distal limb should be opened on the anterolateral surface to avoid injury to the opening of the common bile and pancreatic ducts 2:45. The ampulla sits medially; an incision placed there can transect or incorporate the duct openings into your suture line. When bile appears on opening the distal limb, that confirms communication with the biliary system 3:05 — it tells you the ampulla is patent and located proximal to your incision, which is what you want. If no bile appears, you are either distal to the ampulla or the biliary tree itself is obstructed, and the operation may need to change.

Confirm distal patency before you sew

Distal patency should be checked by injecting saline and observing its filling to the whole bowel 3:30. You are ruling out a second atresia downstream. If saline does not fill the distal bowel, you cannot proceed with a single anastomosis — you will need to find and address the additional obstruction. This step costs thirty seconds and prevents a reoperation.

The diamond technique creates a wide, dependent anastomosis

The technique creates two diamond-shaped openings with perpendicular axes 3:15. The proximal opening should be made at the most dependent part 2:20, which allows drainage by gravity and reduces the risk of stasis in the dilated proximal pouch. The anastomosis uses opposing borders of the diamonds for the posterior wall and far-facing borders for the anterior wall 3:50. This geometry produces a wide connection without tension — the anastomosis is not a simple side-to-side; the perpendicular axes prevent narrowing at the suture line.

Suture from inside on the back wall, outside on the front

Posterior wall suturing starts from the inside until angles are joined, then anterior wall is sutured from the outside 4:10. The posterior wall sutures are full thickness interrupted sutures 4:35 using 5-0 absorbable sutures 4:40. Working from inside on the posterior wall allows you to see the mucosa and ensure good apposition without inverting tissue. Angle sutures are placed from the outside in an extramucosal fashion 5:00, and anterior wall sutures are placed in an extramucosal fashion starting from the angles and working towards the middle 5:40. The shift to extramucosal technique on the anterior wall reduces the risk of suture line leak while maintaining a secure closure. The proximal dilated pouch is brought downwards to meet the distal limb during anterior wall closure 5:55 — you are not stretching the distal limb upward, which would create tension.

Address the malrotation definitively

Widening of the root of the mesentery is performed to address malrotation 6:20. Superior mesenteric vessels should be visualized during mesenteric root widening 6:25, and peritoneal covering is carefully dissected to allow adequate widening of mesenteric root 6:30. You are dividing Ladd's bands and broadening the mesenteric base to prevent volvulus. Appendectomy is performed 6:40 because the cecum will not be in the right lower quadrant postoperatively, and a future appendicitis will present atypically. Final bowel positioning places colon in the left side and duodenojejunal junction in a straight direction 6:48 — this is a Ladd's procedure, not an incidental finding you ignore.

The operation's success depends on ruling out additional pathology before you start, protecting the ampulla during the dissection, and creating an anastomosis wide enough that the dilated proximal duodenum can empty by gravity. The malrotation is not a footnote — it is a separate problem that must be corrected in the same operation.

Takeaways from this story

Open the distal duodenum anterolaterally to avoid transecting the ampulla, which sits medially.
Inject saline into the distal limb before anastomosis to rule out a second level of atresia downstream.
The diamond technique's perpendicular axes create a wide, gravity-dependent anastomosis without tension.
Malrotation found with duodenal atresia requires formal Ladd's procedure, not just repair of the atresia.

Keywords

duodenal atresia type III malrotation duodeno-duodenostomy appendectomy widening of mesenteric root

Transcript

Hello and welcome. This video shows a duodenal duodenostomy for duodenal atresia in a two-day-old boy. A transverse right abdominal incision is made to allow access to the duodenum and small intestine as well. On entering the abdomen, the dilated stomach and proximal duodenum are seen. The small and large intestine are exteriorized and inspected for any other level atresia or rotational anomalies. Here, a medgottma rotation is noticed and duodenal atresia type III is present. The root of the mesentery is exposed to evaluate the width of the duodenocolic isthmus. The end of the mesentery is the end of the mesentery. The end of the mesentery is the end of the mesentery. Now, the duodenum and the duodenodiginal junction is freed from their attachment to the posterior abdominal wall. Then, the lateral attachment of the proximal duodenum is dissected to expose the upper atritic pouch. The proximal and distal parts are clearly in view with the pancreas in between. The proximal and distal and distal and distal and distal and distal vertical direction. The proximal opening is made with the proximal opening at the most dependent part. Stay sutures are placed to the sides and angles of the openings. The distal and distal limb is opened on the anterolateral surface to avoid injury to the opening of the common bile and pancreatic ducts. Note that bile is coming out on opening of the distal limb. This creates two diamond-shaped openings with perpendicular axes. After opening the lumen, the distal patency is checked by injecting saline and observing its filling to the whole bowel. Now, the plan is to make an anastomosis with the two opposing borders of the diamonds to make the posterior wall of the anastomosis while the far-facing borders to make the anterior wall. The anastomosis will start by suturing the posterior wall from the inside till the angles are joined. Then, the anterior wall is sutured from the outside. Suturing is started with the middle of the posterior wall with full thickness sutures using 5-O absorbable sutures. Suturing is advanced on the medial half with interrupted sutures. Suturing is advanced on the outside. The angle suture is placed from the outside in an extramucosa fashion. Now, half of the posterior wall sutures are placed and the other half sutures are now placed in the same way. of the two o'rgay. Thank you. Now the posterior wall is completed. The anterior wall sutures are placed in an extra-mukula fashion starting from the angles and working towards the middle. At this point, the proximal dilated pouch is brought downwards to meet the distal limb. Now the Anastomosis is successfully completed. Attention is now directed towards widening of the root of the mesentery. The superior mesenteric vessels should be visualized and the peritoneal covering is carefully dissected to allow adequate widening. The procedure is concluded by appendectomy. The bowel is returned to the abdomen with the colon in the left side and the DJ in a straight direction. Thank you for watching.

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