Which of the following agents has a mechanism of action that does not involve beta-receptors?
- epinephrine
- albuterol
- propranolol
- prazosin
- ritodrine
Answer: D
Prazosin
Of these choices, prazosin is an alpha-blocker. Ritodrine and epinephrine cause beta sympathetic stimulation. Albuterol is a beta agonist. Propranolol is a beta blocker.
Know Your Content Blueprint
Prazosin is an alpha-blocker often used in the treatment of BPH. It causes urethral relaxation and rapid symptom relief. This is covered as part of the NCCPA™ Content Blueprint Genitourinary System (6%)
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