Dr. Todd Ponsky · Tracheoesophageal Fistula with Dr. Daniel von Allmen
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Video45 min·Published Dec 2016Older

Tracheoesophageal Fistula with Dr. Daniel von Allmen

With Dr. Daniel von Allmen · hosted by Dr. Todd Ponsky & Dr. Avi Schlager

Chapter 1 of 10 · Fundamentals

Center overview

Introduction and Multidisciplinary Center Structure

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What the experts said81 expert statements · 5 host summaries
Cincinnati Children's has a multidisciplinary aerodigestive center that includes ENT airway surgeons, GI, pulmonary, general surgeons, nurse practitioners, geneticists, and dietitians.
ClinicalDaniel von Allmen
Physical examination findings in esophageal atresia include assessment of abdominal contour (scaphoid vs. distended) and respiratory status.
ClinicalTodd Ponsky
Personal confirmation of NG tube passage is important because some patients started on treatment for esophageal atresia were subsequently found to have tubes that passed normally.
ClinicalTodd Ponsky
Injecting air into the NG tube and obtaining a plain film helps visualize distention of the proximal esophageal pouch.
ClinicalDaniel von Allmen
Lack of visible proximal pouch distention raises concern for either incorrect diagnosis or presence of a proximal fistula allowing pouch decompression.
ClinicalDaniel von Allmen
Preoperative echocardiogram is essential to assess cardiac anatomy and identify right-sided aortic arch.
GuidelineDaniel von Allmen
Renal ultrasound and spine evaluation for tethered cord are needed but are not necessary before addressing esophageal atresia.
ClinicalDaniel von Allmen
Conventional wisdom suggests left thoracotomy for right-sided aortic arch, though the operation is somewhat more difficult with the heart more in the way.
ClinicalDaniel von Allmen
If right-sided arch is discovered intraoperatively during right thoracotomy, it is possible to complete the operation from that side, though some reports suggest higher incidence of swallowing problems.
ClinicalDaniel von Allmen
In a stable, larger baby not requiring intubation, it is reasonable to wait until full resources are available (Sunday or Monday) rather than operating emergently on Saturday.
OpinionDaniel von Allmen
Prolonged delay risks colonization of the GI tract and soiling of the lungs.
ClinicalDaniel von Allmen
Oscillator ventilation has not been found to make a significant difference in managing infants with large fistulas and abdominal distention.
OpinionDaniel von Allmen
Air preferentially entering the GI tract rather than lungs is a bigger problem in more premature infants with poor lung compliance.
ClinicalDaniel von Allmen
Treating with surfactant and improving lung compliance helps as much as changing ventilator type in managing fistula-related ventilation problems.
ClinicalDaniel von Allmen
One risk in managing the deteriorating infant with TEF is waiting too long to make a decision, which can lead to an emergency situation with inability to ventilate.
ClinicalDaniel von Allmen
Bronchoscopic placement of Fogarty balloon in the fistula is difficult unless expertise and equipment are immediately available.
ClinicalDaniel von Allmen
G-tube decompression may paradoxically worsen ventilation by creating even lower resistance pathway, allowing more air to flow from trachea to GI tract rather than to lungs.
ClinicalDaniel von Allmen
Laparotomy with vessel loop around gastroesophageal junction with gentle traction (Rommel tourniquet technique) can be used to stabilize critically ill infant, with G-tube placement and delayed definitive repair after several days.
ClinicalDaniel von Allmen
In esophageal atresia with associated duodenal atresia, if the child is stable, consider fixing duodenal atresia first to avoid repairing esophagus upstream from an obstruction.
ClinicalDaniel von Allmen
Both esophageal and duodenal atresia can potentially be repaired in the same operative setting if the child is stable enough.
ClinicalDaniel von Allmen
Routine intraoperative bronchoscopy documents fistula location, assesses for proximal fistula, and most importantly identifies laryngeal clefts that are easily missed.
ClinicalDaniel von Allmen
Laryngeal clefts have been seen many times in referred patients who had multiple thoracotomies but never had bronchoscopy.
ClinicalDaniel von Allmen
The rate of missed second fistula is approximately 1%.
EpidemiologicalDaniel von Allmen
High fistulas exist on a spectrum from essentially a trifurcation of the carina to fistulas high enough to be approachable through the neck.
ClinicalDaniel von Allmen
Endotracheal tube positioning depends on fistula location: for fistula at carina (trifurcation), tube should be placed higher; for high fistula, tube should be placed distal to fistula but not into the fistula itself.
ClinicalDaniel von Allmen
Extrapleural approach offers the advantage of potentially limiting soilage of pleural space if there is a postoperative leak.
ClinicalDaniel von Allmen
Dividing the azygos vein has no morbidity, gives better access, and frequently guides to the fistula location.
ClinicalDaniel von Allmen
For open repair, the azygos is typically ligated and divided with suture.
ClinicalDaniel von Allmen
Thoracoscopically, the azygos can be divided with energy devices or clips; hook cautery can be used if applied slowly up and down rather than all at once.
ClinicalTodd Ponsky
The 3mm Just Right surgical sealer is an ideal device for dividing the azygos in this size patient.
ClinicalDaniel von Allmen
To establish extrapleural plane, place heel of right angle on ribs and spread to nicely show the plane, then mobilize pleura posteriorly to expose azygos.
ClinicalDaniel von Allmen
Mobilizing pleura up around apex of lung is important to allow access for proximal pouch mobilization.
ClinicalDaniel von Allmen
Distal esophageal segment is controlled with vessel loop, allowing proximal dissection to identify the fistula site.
ClinicalDaniel von Allmen
Contrary to standard teaching that distal esophagus should not be mobilized, it can be mobilized extensively especially laterally, all the way to the diaphragm.
ClinicalDaniel von Allmen
Medial mobilization of distal esophagus requires more caution due to blood supply concerns.
ClinicalDaniel von Allmen
Extensive proximal pouch mobilization provides the most important length gain for anastomosis.
ClinicalDaniel von Allmen
Proximal pouch dissection is similar to separating rectum and vagina—making two planes out of one with no great natural separation.
ClinicalTodd Ponsky
For proximal dissection, blade cautery with light buzz followed by mostly blunt dissection with flat end of blade, staying right on the thickened esophagus, is preferred; better to enter esophagus than trachea high in chest.
ClinicalDaniel von Allmen
For large tracheal injury, sleeve resection is possible given tracheal mobility; pericardium or autologous tissue should be interposed between trachea and esophageal repair.
ClinicalDaniel von Allmen
5-0 PDS (absorbable monofilament) is the preferred suture for esophageal anastomosis; silk is not favored.
OpinionDaniel von Allmen
Myotomies are not favored because they potentially create even more dysfunctional esophageal segment; motility is already abnormal in esophageal atresia.
OpinionDaniel von Allmen
For long-gap atresia when ends cannot be brought together, approach is to ligate distal end after dividing fistula, tack both ends on tension to prevertebral fascia, close, allow patient to grow 2-3 weeks, then return for anastomosis.
ClinicalDaniel von Allmen
Traction or pressure is a strong stimulus to growth throughout the body including cardiovascular system and lungs.
ClinicalDaniel von Allmen
For thoracoscopic Foker technique, traction sutures are placed in proximal and distal ends, brought out through trocar sites above and below (crossed), tensioned, with return to OR within a week for anastomosis.
ClinicalDaniel von Allmen
Internal Foker (tacking ends to prevertebral fascia) is preferred over classic Foker with prolonged paralysis and sequential tensioning.
OpinionDaniel von Allmen
Bob Perry has performed 5-6 Foker procedures with excellent outcomes and minimal stricture formation.
ClinicalTodd Ponsky
For thoracoscopic TEF repair, patient is rotated past 90 degrees to allow gravity to move lungs away, with standard port placement: camera center, posterior port inferiorly, anterior port superiorly.
ClinicalDaniel von Allmen
3mm instruments are used for thoracoscopic TEF repair.
ClinicalDaniel von Allmen
Thoracoscopic visualization is very helpful for mobilizing the proximal pouch.
ClinicalDaniel von Allmen
The anastomosis is the most difficult part of thoracoscopic TEF repair and requires significant minimally invasive experience.
ClinicalDaniel von Allmen
Simulation courses for thoracoscopic TEF repair will be a great advantage for trainees given the infrequency of these cases.
OpinionDaniel von Allmen
For thoracoscopic anastomosis, Vicryl ties down nicely but cannot be used with knot pusher as it will tear through esophagus under tension; monofilament is needed for knot pusher technique.
ClinicalTodd Ponsky
For intracorporeal knot tying, braided suture is safe and preferred.
ClinicalTodd Ponsky
When clipping the fistula thoracoscopically, do not divide the esophagus distally until ready to place first stitch, preventing it from dropping toward diaphragm.
ClinicalTodd Ponsky
The hanging stitch helps release tension as first stitches are placed, providing some degree of approximation before throwing down initial stitches.
ClinicalAvi Schlager
Every stitch must incorporate mucosa, which requires good visualization; the hanging stitch helps visualize lumens of both proximal and distal ends.
ClinicalDaniel von Allmen
Ventilator management during thoracoscopy depends more on anesthesiologist comfort and attention than ventilator type (oscillator vs. conventional).
ClinicalDaniel von Allmen
Endotracheal tube can be positioned to selectively ventilate left lung during thoracoscopy, aided by preoperative bronchoscopy.
ClinicalDaniel von Allmen
A little CO2 insufflation with time will collapse the lung as long as anesthesiologist is not fighting with positive pressure; anesthesiologists can get scared by initial shunting but things settle down.
ClinicalDaniel von Allmen
Early extubation is preferred when patient had good lung function preoperatively and operation went smoothly, even potentially in the operating room, to avoid positive pressure on tracheal repair and instead have negative intratracheal pressure with spontaneous breathing.
ClinicalDaniel von Allmen