A 8-year-old in status asthmaticus presents with diffuse whe…

A 8-year-old in status asthmaticus presents with diffuse wheezing and hypoxia. You have given 3 duo nebs (albuterol-ipratroprium) and 2 mg/kg of methylpredisolone in the first hour. Oxygen saturations are 89% on room air and 96% on 40% oxygen in between duo neb administration. What is the best next therapy of choice? 

A 6-year-old male is brought to the Emergency Department aft…

A 6-year-old male is brought to the Emergency Department after being rescued from a house fire. He is coughing, has hoarseness, and nasal hairs are singed. Oxygen saturation is 99% on room air. Which of the following is the most important immediate concern in this patient?

A 7-year-old female is admitted to the general pediatrics te…

A 7-year-old female is admitted to the general pediatrics team with pneumonia. A chest x-ray is obtained finding a focal consolidation to the right lower lobe. Oxygen saturation is 88% on room air. Which of the following best explains the pathophysiological reason as to why the child is hypoxemic despite having adequate ventilation in other lung regions on the chest x-ray?