[Solved]: A 7-year-old boy is brought to the ED after…

Question 1 A 7-year-old boy is brought to the ED after awakening in the middle of the night with difficulty breathing. He has a 2-day history of worsening productive cough and wheezing. The patient is found to have dyspnea, tachypnea, and a decreased inspiratory/expiratory ratio. Lung examination reveals diffuse rhonchi and expiratory wheezes in addition to pulsus paradoxus. He is afebrile and has no recent history of fever. This is the patient’s second visit to the ED with these symptoms; his first visit was 2 years ago. What is the most likely diagnosis? Question 2 What is the pathophysiology of this condition?