15 Questions
What is the main problem of asthma?
Narrowing and swelling of the airway
What is the function of H1 receptors in the lungs?
Bronchoconstriction
What is the compound found in cells and released in allergic, inflammatory reaction?
Histamine
What is the characteristic of status asthmaticus?
Acute, severe, and prolonged asthma attack
Which type of infection does acute rhinitis affect?
Upper respiratory tract
What is the main characteristic of anticholinergic properties in respiratory agents?
Decreased secretions
Which substance is an agonist of α1-adrenoceptors and acts as a nasal decongestant?
Pseudoephedrine
Which antihistamine acts as an inverse agonist at the H1 receptor, thereby reversing the effects of histamine on capillaries?
Diphenhydramine
Which antihistamine's principal effects are mediated via selective inhibition of peripheral H1 receptors?
Cetirizine
What is the action of antihistamines like Cetirizine and Loratadine?
Block H1 receptors
Which substance is an expectorant that promotes expectoration by reducing the viscosity of pulmonary secretion or by decreasing the tenacity with which exudates adhere to the lower respiratory tract?
Guaifenesin
Which substance is an agonist of α1-adrenoceptors and acts as a decongestant by causing vasoconstriction in the nasal mucosa?
Pseudoephedrine
Which antihistamine is a human metabolite of hydroxyzine and its principal effects are mediated via selective inhibition of peripheral H1 receptors?
Cetirizine
"An agent that promotes expectoration by reducing the viscosity of pulmonary secretion or by decreasing the tenacity with which exudates adhere to the lower respiratory tract." Which substance does this describe?
Guaifenesin
What is the action of antihistamines like Cetirizine and Loratadine?
Block H1 receptors
Prepare for the finals with this lesson on respiratory agents, focusing on upper and lower respiratory tract infections. Transcribed from a presentation by Dra. Carmencita R. Pacis, PhD, RN.
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