Profoundly Delayed Emergence due to Pulmonary Embolism.

Pulmonary embolism is a rare, but serious, potential perioperative complication and crisis. We present a case of a 12-year-old female undergoing distal femoral and proximal tibial osteotomies with internal fixations who experienced acute onset hypercapnia, tachycardia, and prolonged minimal responsiveness following deflation of the tourniquet and cessation of inhaled sevoflurane. CT-chest demonstrated bilateral partially occlusive filling defects of the pulmonary vasculature. We concluded that the patient experienced a pulmonary embolism resulting in V/Q mismatch, retained sevoflurane, and ultimately delayed emergence.