Sympatholytics

Question 1

Phenoxybenzamine -receptor and uses?

Answer 1

Alpha antagonist used to treat urinary tension by relaxing the urethra sphincter and treats pheochromocytoma hypertension

Question 2

Prazosin -receptor and uses?

Answer 2

Alpha-1 Antagonist causes muscle relaxation and vasodilation used to treat urinary retention

Question 3

Beta blockers

Answer 3

Propanolol
atenolol
esmolol

Question 4

Propanolol -receptor and uses?

Answer 4

Nonselective beta antagonist that causes bradycardia used to treat tachyarrhythmias, feline hyperthyroidism, and chocolate toxicosis

Question 5

Atenolol -receptor and uses?

Answer 5

Selective beta-1 antagonist that does not cause bronchoconstriction

Question 6

Esmolol -receptor and uses?

Answer 6

Selective beta-1 antagonist that is shorter acting then atenolol

Question 7

Indirect acting sympatholytics

Answer 7

Alpha-methyl DOPA - blocks DOPA decarboxylase in the NE production pathway to reduce synthesis of NE

Reserpine- blocks NE uptake into vesicles - used for calming equines

Guanethidine- blocks NE release to treat hypertension

Question 8

Direct acting Alpha antagonists

Answer 8

Phenoxybenzamine

prasozin