TYK374
You are called from the ER about a 4 week-old infant, born full term to a 26 year-old G1P0 via spontaneous vaginal delivery, who presented in respiratory distress. The parents deny fevers or sick contacts, but there is poor weight gain and diaphoresis during feeding. A chest radiograph shows a left lower lobe opacification. An ultrasound is performed, which demonstrates a pulmonary sequestration. The anesthesia resident is unfamiliar with the this diagnosis and you note that:
a) Pulmonary sequestrations are most commonly extrapulmonary in nature
b) The CXR findings likely represents a pneumonia that developed as a consequence of the sequestration
c) The blood supply of pulmonary sequestrations is from systemic arteries
d) Pulmonary sequestration is often associated with significant dead space ventilation
e) There are three histologic subtypes of sequestration, with variable prognoses depending on subtype