What other condition could the patient be experiencing?

A 55-year-old female presents in the dental office for a crown preparation with final impressions on tooth number30. As the auxiliary seats the patient, she asks the patient if there have been any changes in the medical history. The patient states that her physician has given her a bronchodilator. The procedure concludes with no complications and the dentist leaves the treatment room. As the patient is preparing to leave, she begins to cough and the auxiliary observes that the patient is having difficulty breathing. The auxiliary looks for the patient’s bronchodilator.

airway obstruction