Grand Rounds · Esophageal Replacement with Dr. Dan von Allmen
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Podcast13 min·Published Nov 2023Older

Esophageal Replacement with Dr. Dan von Allmen

With Dr. Daniel von Allmen · hosted by Dr. Em Gootee

Chapter 1 of 5 · Fundamentals

EA terminology & epidemiology

Terminology, Epidemiology, and Classification of Esophageal Atresia

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What the experts said33 expert statements
Esophageal atresia occurs in 1 in 4500 births in the United States with a slight male predominance
EpidemiologicalDaniel von Allmen
Chromosomal anomalies are fairly common in esophageal atresia, with recurrence risk of 0.5 to 2% among parents who have one affected child
EpidemiologicalDaniel von Allmen
Prenatal ultrasound detects only about half of esophageal atresia cases, primarily detecting pure atresia cases due to significant proximal pouch dilation
ClinicalDaniel von Allmen
The most common type of esophageal atresia is proximal atresia with a distal fistula (type C)
ClinicalDaniel von Allmen
VACTERL is an association, not a syndrome, requiring 3 of the defects (vertebral, anorectal, cardiac, tracheoesophageal, renal, limb) for diagnosis
ClinicalDaniel von Allmen
Esophageal atresia associated with significant cardiac anomalies and low birth weight has only 27 to 30% survival rate
EpidemiologicalDaniel von Allmen
In type C fistula with respiratory distress, the low resistance pathway is into the intestine rather than the lungs, causing air to continuously enter the intestine and increase stomach size
ClinicalDaniel von Allmen
Gastric decompression with G-tube or needle helps temporarily but air still preferentially exits through the G-tube rather than entering the lungs; placing G-tube end underwater provides some resistance but doesn't completely fix the problem
ClinicalDaniel von Allmen
Placing a vessel loop around the distal esophagus is easier than dividing the fistula when in trouble during the procedure
ClinicalDaniel von Allmen
Every child with tracheoesophageal fistula or esophageal atresia needs a bronchoscopy due to 10-15% association of airway issues
ClinicalDaniel von Allmen
Virtually all children with esophageal atresia have some element of tracheomalacia, though bronchoscopy can show anatomic tracheomalacia but cannot determine if it is clinically significant
ClinicalDaniel von Allmen
There is some growth in the esophagus over time in long-gap cases, with maximal growth occurring by 4-6 weeks
OpinionDaniel von Allmen
For long-gap cases, the approach at Cincinnati Children's is to support the child with enteral bolus feedings to stretch the distal esophagus, obtain sequential gap studies, and take the child to OR at 6 weeks
ClinicalDaniel von Allmen
Thoracoscopic visualization of the esophagus is better than open surgery when the camera port is placed looking straight down at the esophagus
OpinionDaniel von Allmen
The azygos vein guides to the level of the fistula because the fistula typically occurs right about the level of the azygos vein
ClinicalDaniel von Allmen
When clipping the fistula, the clip must be flush with the trachea to avoid leaving a long pouch that can pool secretions and cause problems
ClinicalDaniel von Allmen
Anesthesiologist must push down repeatedly to help locate the proximal esophageal pouch during surgery
ClinicalDaniel von Allmen
It is safer to put a hole in the esophageal pouch than in the trachea during dissection
ClinicalDaniel von Allmen
Iatrogenic tracheal injury during thoracoscopy can be detected by sudden elevation of end-tidal CO2 as CO2 from the thoracoscopy enters the trachea
ClinicalDaniel von Allmen
The Foker procedure uses traction sutures brought through the chest wall with sequential tightening to stimulate esophageal growth
ClinicalDaniel von Allmen
In primary Foker cases, esophageal connection was achieved 96% of the time, compared to only 67% in secondary cases with previous operations
EpidemiologicalDaniel von Allmen
Primary Foker procedure cases spent more than 1 month in ICU on average and were paralyzed for more than 2 weeks
EpidemiologicalDaniel von Allmen
Secondary Foker cases spent a mean of 110 days in ICU and were paralyzed for more than 1 month
EpidemiologicalDaniel von Allmen
No esophageal replacement technique is superior to others; the most common is gastric pull-up, but reverse gastric tube, colon interposition, and duodenal interposition are also used
OpinionDaniel von Allmen
Reverse gastric tube is created from the greater curve of the stomach and requires preservation of the gastroepiploic artery when placing initial G-tube
ClinicalDaniel von Allmen
Reverse gastric tube has many problems and is not used at Cincinnati Children's
OpinionDaniel von Allmen
Colon interposition provides tremendous length, allowing anastomosis to the pharynx in caustic ingestion patients with no remaining esophagus
ClinicalDaniel von Allmen
The biggest challenge with colon interposition is that the colon dilates and elongates over time, causing food to collect and not empty properly
ClinicalDaniel von Allmen
Contrary to initial teaching, colon interposition grafts are not hard to revise and do not necessarily damage blood supply during revision
ClinicalDaniel von Allmen
In Cincinnati Children's first 13 colon interpositions, 12 of 13 patients were NPO at presentation, and there has been no graft loss since the initial case
EpidemiologicalDaniel von Allmen
Posterior tracheopexy involves placing sutures into the membranous trachea to hold it back and manage tracheomalacia
ClinicalDaniel von Allmen
It is unknown which patients need posterior tracheopexy, but performing it prophylactically during initial repair takes only 15 minutes and avoids reoperation through previously operated field
OpinionDaniel von Allmen
At Cincinnati Children's, complex esophageal cases including colon interpositions are performed jointly with ENT surgeons, prioritizing patient outcomes over individual surgeon ego
OpinionDaniel von Allmen