Podcast
Questions and Answers
Which of the following is an example of a non-selective α-receptor antagonist?
Which of the following is an example of a non-selective α-receptor antagonist?
- Phentolamine (correct)
- Terazosin
- Prazosin
- Yohimbine
What is the main pharmacologic effect of α-adrenoceptor antagonist drugs?
What is the main pharmacologic effect of α-adrenoceptor antagonist drugs?
- Increase in blood pressure
- Vasodilation (correct)
- Bronchoconstriction
- Decrease in heart rate
Which of the following is NOT a main group of α-adrenoceptor antagonist drugs?
Which of the following is NOT a main group of α-adrenoceptor antagonist drugs?
- Non-selective α-receptor antagonists
- α3-selective antagonists (correct)
- Ergot derivatives
- α1-selective antagonists
Which type of adrenergic antagonist may be reversible or irreversible in its interaction with α-receptors?
Which type of adrenergic antagonist may be reversible or irreversible in its interaction with α-receptors?
Which of the following is an example of an α2-selective antagonist?
Which of the following is an example of an α2-selective antagonist?
Which effect is NOT associated with the blockade of α1-receptors by α-adrenoceptor antagonist drugs?
Which effect is NOT associated with the blockade of α1-receptors by α-adrenoceptor antagonist drugs?
Which α-adrenoceptor antagonist drug causes irreversible blockade of long duration?
Which α-adrenoceptor antagonist drug causes irreversible blockade of long duration?
What is the most significant effect of Phenoxybenzamine?
What is the most significant effect of Phenoxybenzamine?
What is the main clinical use of Phentolamine?
What is the main clinical use of Phentolamine?
Why is Phenoxybenzamine contraindicated in patients with decreased coronary perfusion?
Why is Phenoxybenzamine contraindicated in patients with decreased coronary perfusion?
