tracheal agenesis rita fakhoury crna laura wetzel crna
TRANSCRIPT
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Tracheal Agenesis
Rita Fakhoury CRNALaura Wetzel CRNA
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Objectives
• Discuss case report• Define Tracheal Agenesis(TA)• Embryology/Anatomy• Incidence of TA • Clinical Signs/Symptoms• Neonatal Difficult Airway Algorithm• Therapeutic Options
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Case Report
• 2 do male• Tetralogy of Fallot, pulmonary atresia
with discontinuous pulmonary arteries supplied by bilateral patent ductuses arteriosus, ASD,VSD.
• Imperforate or anteriorly displaced anus• Absent thymus, suspect DiGeorge
Syndrome
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• CT ordered • Patient was intubated in NICU• Reported to be “difficult airway”• On arrival, NICU team requested ETT
change for large leak
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• NICU team reported ventilation difficulties and desaturations with slight adjustments in ETT positioning.
• Decision made to exchange ETT in NICU prior to transport to CT
• Difficult airway cart and neonatal exchange catheter called for
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• CMAC used to visualize placement of existing airway
• Vocal cords visualized without ETT• ETT was presumably placed in esophagus• Attempt to place ETT 3.0 through vocal
cords
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• Resistance met after placement through glottic opening
• Checked for placement of ETT through vocal cords (capnometer)
• No change in color of capnometer• No bilateral breath sounds
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CRAP!
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• Decision to use FOB to visualize anatomy found beyond glottic opening
• Appeared to be blind pouch• Patient remained stable • Ventilated with existing esophageal tube
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ENT called to bedside STAT
“No, I don’t need a T&A, I need ENT to bedside
STAT”!!!!!!
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• Decision made for emergent DLB in OR with possible tracheostomy
• Transported CAREFULLY with existing ETT
• Mouth and nose held shut to mitigate large leak
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• DLB confirmed blind pouch after glottic opening
• Decision to prep for tracheostomy• After incision, NO TRACHEAL RINGS
FOUND!!!!!!!
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SAY WHAT???
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• Pediatric General Surgery consulted to OR
• Patient placed on ECMO• Plan was possible esophageal conversion• After long discussion with family
decision was made to withdraw support
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Epiglottis
Fused Arytenoids
Cricoid Plate
RLN
RLN
RLN
RLN
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Stomach
Right bronchus
Left bronchus
Opened Esophagus
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Hold on to your hats! Its time to review Tracheal Agenesis
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What is TA?
• Extremely rare congenital anomaly characterized by a complete absence or interruption of the trachea
Ergun, Suzan et al. “Tracheal Agenesis: A Rare but Fatal Congenital Anomaly” McGill Journal of Medicine (2011)
13.1:10.
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Embryology
y
Holinger LD, Rodney PL and Christopher GG. Pediatric Laryngology and Bronchoesophagology. Philadelphia PA, Lippincott-Raven Publishers, 1997.
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Phase III
- Around 28 days GA- Stage 13• - Distance between respiratory
diverticulum and carina lengthen• - Vascular compromise at this phase
leads to…
• - Esophageal Atresia• - TEF• - Tracheal Agenesis• - Tracheal Stenosis
Holinger LD, Rodney PL and Christopher GG. Pediatric Laryngology and Bronchoesophagology. Philadelphia PA, Lippincott-Raven Publishers, 1997
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Phase IV
- 48 days GA- Stages 17-18- Laryngeal cecum descends caudally- Begins to recanalize at glottic level- Failure to re-canalize can cause…
-Supraglottic webs-Glottic webs-Glottic atresia
Holinger LD, Rodney PL and Christopher GG. Pediatric Laryngology and Bronchoesophagology. Philadelphia PA, Lippincott-Raven Publishers, 1997
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Anybody feel like this yet?
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Types of TAFloyd’s Classification of
Tracheal Agenesis
Type I Type II Type III
Dijkman, et al. “Floyd’s Classification of Tracheal Agenesis.” Cases Journal (2009) 2:7212.
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Incidence
• 1:50,000• Male to female incidence 2:1• 52% associated with premature delivery• ~50% associated with polyhydramnios• 94% associated with other congenital
abnomalities
De Groot-van der Mooren, et al. “Tracheal Agenesis: Approach Towards this Severe Diagnosis. Case Report and Review of Literature.” European Journal of Pediatrics (2012) 171:425-431.
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Prenatal-Diagnosis• Polyhydramnios• Can be confused with TEF when an
esophogeal fistula is present• When CHAOS syndrome suspected in
absence of fistula, prenatal MRI should be obtained-(would need exit procedure or fetal intervention).
Kalache, Karim D., et al. “Prenatal Diagnosis of Laryngeal Atresia in Two Cases of Congenital High Airway Obstruction Syndrome (CHAOS).” Prenatal Diagnosis (1997) 17.6: 577-581.
De Groot-van der Mooren, et al. “Tracheal Agenesis: Approach Towards this Severe Diagnosis. Case Report and Review of Literature.” European Journal of Pediatrics (2012) 171:425-431.
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Postnatal-Diagnosis
• By recognition of specific clinical signs in newborn
• Radiographic findings• Postnatal CT scan if undiagnosed
prenatally• Bronchoscopy
De Groot-van der Mooren, et al. “Tracheal Agenesis: Approach Towards this Severe Diagnosis. Case Report and Review of Literature.” European Journal of Pediatrics (2012) 171:425-431.
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Clinical Signs
• Respiratory Distress• Breathing movement without appropriate
air entry• No Audible cry• Failed endotracheal intubations• Usually associated with VACTERL
De Groot-van der Mooren, et al. “Tracheal Agenesis: Approach Towards this Severe Diagnosis. Case Report and Review of Literature.” European Journal of Pediatrics (2012) 171:425-431.
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This can’t be good!
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Neonatal Algorithm
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Therapeutic Options
• ECMO to stabalize• Tissue engineering trachea• Esophageal conversion
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Double Cervical Esophagostomy and Esophageal Banding
Usui, N. et al. “Three-Stage Reconstruction of the Airway and Alimentary Tract in a Case of Tracheal Agenesis” The Society of Thoracic Surgeons (2010) 89:2019-22.
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First Recipient of Tracheal derived from stem cells
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Discussion
• Several intubations• Audible crying?• Future treatments
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Time to Wake Up For Questions!!!!!!!!!
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References
Ergun, S., et al. “Tracheal Agenesis: a Rare but Fatal Congenital Anomaly.” McGill Journal of Medicine (June 2011) 13.1:10.
Holinger LD, et al. Pediatric Laryngology and Bronchoesophagology. Philadelphia PA, Lippincott-Raven Publishers, 1997.
Dijkman, et al. “Floyd’s Classification of Tracheal Agenesis.” Cases Journal (2009) 2:7212.
De Groot-van der Mooren, et al. “Tracheal Agenesis: Approach Towards this Severe Diagnosis. Case Report and Review of Literature.” European Journal of Pediatrics (2012) 171:425-431.
Kalache, Karim D., et al. “Prenatal Diagnosis of Laryngeal Atresia in Two Cases of Congenital High Airway Obstruction Syndrome (CHAOS).” Prenatal Diagnosis (1997) 17.6: 577-581.
Morrison, R. et al. airway algorithm….
Usui, N. et al. “Three-Stage Reconstruction of the Airway and Alimentary Tract in a Case of Tracheal Agenesis” The Society of Thoracic Surgeons (2010) 89:2019-22.