Tracheoesophageal fistula repair — Flashcards

Flashcard 1: EF < _____% and MI within _____ months are absolute contraindications to non-cardiac surgery

Answer: 35

Extra:  https://onlinemeded.org/spa/surgery?ref=anki 

Flashcard 2: _____ is a congenital hypertrophy of the pyloric smooth muscle

Answer: Pyloric stenosis

Flashcard 3: A _____ is indicated when an emergency airway is required or orotracheal / nasotracheal intubation is unsuccessful / contraindicated

Answer: cricothyrotomy

Flashcard 4: Cholecystitis can cause _____ formation with the GI tract, resulting in air in the biliary tree (pneumobilia)

Answer: fistula

Flashcard 5: Echinococcus granulosus cysts are injected with _____ during surgery to kill larvae and prevent spread/anaphylaxis

Answer: ethanol

Flashcard 6: At 11 days after inhalation injury, bronchoscopy will typically show _____

Answer: resolution

Flashcard 7: What type of hiatal hernia involves NO displacement of the gastroesophageal junction?_____

Answer: Paraesophageal hernia

Flashcard 8: What is the most common embryological origin of a congenital pharyngo-cutaneous fistula?

Answer: Persistence of the 2nd branchial cleft and pouch.

Extra: Congenital pharyngo-cutaneous fistulas (branchial fistulas) most commonly arise from the second branchial arch. The fistula typically tracks from the tonsillar fossa (pouch origin), between the internal and external carotid arteries, and opens onto the skin at the lower third of the neck anterior to the sternocleidomastoid muscle. 3rd/4th arch remnants are much rarer and typically involve the pyriform sinus.

Flashcard 9: Definition and key feature of Gastroschisis:

Answer: Extrusion of abdominal contents through abdominal folds, not covered by peritoneum.

Extra: Gastroschisis occurs due to a failure of involution of the right umbilical vein or a vascular accident involving the omphalomesenteric artery. It is typically found to the right of the umbilical cord insertion. Unlike omphalocele, it is NOT covered by a sac (peritoneum).

Flashcard 10: What are the 5 types of tracheoesophageal anomalies (Gross classification)?

Answer: 1. Pure Esophageal Atresia (EA) 2. EA with distal Tracheoesophageal Fistula (TEF) (Most common) 3. Pure TEF (H-type / no atresia) 4. EA with proximal TEF 5. EA with double TEF (both proximal and distal)

Extra: These correspond to the Gross classification of EA/TEF: - Type A: Pure EA - Type B: EA with proximal TEF - Type C: EA with distal TEF (~85% of cases) - Type D: EA with both proximal and distal TEF - Type E: H-type (Pure TEF without atresia)