1.The category of chronic cough is typically attributed to a cough lasting more than:

4 Weeks

8 Weeks

3 Months

6 Months

2.Which of the following is the most common cause of chronic cough?

Cough hypersensitivity syndrome

Lower respiratory tract infection

Postnasal drip syndrome/upper airway cough syndrome 

Chronic obstructive pulmonary disease

3.When a specific underlying etiology of chronic cough cannot be identified, initial empiric treatment trials can include any of the following oral agents except:

First-generation antihistamine

Guaifenesin

Steroid

Proton pump inhibitor

4.Which of the following drug classes is most likely associated with drug-induced cough?

ACE inhibitors 

Beta blockers

Calcium channel blockers

Angiotensin-receptor blockers

5.Novel classes of agents being investigated to treat refractory chronic cough (RCC) include all of the following except:

NK1 antagonists

CGRP inhibitors 

P2X3 antagonists

Voltage-gated sodium channel blockers