Sat27November0445PM 23

Regarding the pharmacological control of phaeochromocytoma, are the following alpha-adrenergic receptor antagonists?

True / False

Nifedipine Correct

Phentolamine Correct

Atenolol Correct

Propranolol Correct

Phenoxybenzamine Correct

Explanation

Alpha-adrenergic receptor blockade is particularly important in the treatment of phaeochromocytoma and should be started before beta blockers.

Alpha blockers include phenoxybenzamine, phentolamine, prazosin and doxazosin. Generally phenoxybenzamine is preferred as this provides irreversible blockade.

Atenolol and propranolol are both beta-adrenergic receptor antagonists, and nifedipine is a calcium antagonist.

Answer Statistics

Not enough data to display the statistics

Average score: 91.56%

Times answered: 263