An 8-year-old, obese girl with severe obstructive sleep apnea is taken to the PACU after a tonsillectomy and adenoidectomy. On arrival, she is tachycardic, dyspneic, tachypneic, and anxious. Her SpO2 is 89% despite 4L nasal cannula. Auscultation reveals occasional wheezes bilaterally. A chest radiograph reveals diffuse interstitial and alveolar infiltrates. Given these findings, which of the following is the MOST likely diagnosis?
Select one of the following: