FINISHED Adrenergic Drugs Flashcards
Phenylephrine and clonidine belong to which class of adrenergic agents?
Alpha receptor agonists
Phenylephrine is selective for which receptor?
Alpha 1
Clonidine is selective for which receptor?
Alpha 2
What is the primary therapeutic use of phenylephrine?
Nasal decongestant
What is the primary therapeutic use of clonidine?
Systemic hypertension
Phentolamine and prazosin belong to which category of adrenergic agents?
Alpha receptor antagonists
Which alpha receptor antagonist is selective for alpha 1?
Prazosin
Which alpha receptor antagonist is non-selective for alpha 1 and alpha 2 receptors?
Phentolamine
What is the primary therapeutic use of prazosin?
Urinary retention/hesitancy and frequent urination secondary to benign prostatic hyperplasia (reduces resistance of trigone muscle of the bladder to urine outflow)
Isoproterenol and albuterol belong to which class of adrenergic drugs?
Beta receptor agonists
Which beta receptor agonist prototype is non-selective to beta 1 and beta 2 receptors?
Isoproterenol
Which beta receptor agonist prototype has some selectivity for beta 2 receptors?
Albuterol
What is the primary therapeutic use of beta receptor agonists?
Treatment of bronchoconstriction in patients with asthma or COPD
What noticeable side effect is more prominent with the use of isoproterenol as compared to albuterol in asthma therapy?
Tachycardia (isoproterenol also acts on beta 1 receptors in cardiac muscle)
What is the mechanism by which beta receptor agonists mitigate an asthma attack?
Beta 2 receptor activation leads to relaxation of bronchial smooth muscle, decreasing airway resistance