A14-year-old girl is brought to the physician by her mother because of episodic shortness of breath and a dry cough that is worse at night. She had an upper respiratory tract infection 4 weeks ago. Lungs are clear to auscultation. Pulmonary function tests are as follows: . The physician administers a drug, after which repeat spirometry shows a reduced peak expiratory flow rate. Which of the following drugs was most likely administered?

Question

A14-year-old girl is brought to the physician by her mother because of episodic shortness of breath and a dry cough that is worse at night. She had an upper respiratory tract infection 4 weeks ago. Lungs are clear to auscultation. Pulmonary function tests are as follows:  . The physician administers a drug, after which repeat spirometry shows a reduced peak expiratory flow rate. Which of the following drugs was most likely administered?

Quizplus · Accepted Answer

Eductional Objective: In patients that have suggestive symptoms (e.g., intermittent shortness of breath) but normal pulmonary function tests, bronchoprovocative testing can be helpful in confirming a diagnosis of asthma. Bronchoprovocative testing uses methacholine to induce bronchoconstriction during spirometry, resulting in reduced FEV1 and peak expiratory flow rate.

A14-Year-Old Girl Is Brought to the Physician by Her Mother