Sympathomimetic Drugs

Question 1

Which chemical structure of substance can produce an sympathomimetic response?

Answer 1

Catecholamines

Question 2

Which drugs are examples of endogenous catecholamines?

Answer 2

Epinephrine, norepinephrine, and dopamine

Question 3

Which drugs are examples of synthetic catecholamines?

Answer 3

Isoproterenol and dobutamine

Question 4

What do noncatecholamines do?

Answer 4

They stimulate the adrenergic receptors. The have a longer duration of action that the endogenous or synthetic catecholamines

Question 5

Which drug is a adrenergic agonist that stimulate more than one adrenergic receptor site? Which adrenergic sites exactly?

Answer 5

Epinephrine; Alpha1, Beta1, and Beta2

Question 6

What responses do you expect from someone who took epinephrine?

Answer 6

Increased blood pressure, pupil dilation, increased heart rate (tachycardia), and bronchodilation.

Question 7

In which events is epinephrine most useful?

Answer 7

Treating allergic reactions such as anaphylaxis, asthma, bronchospasm, severe hypotension, cardiac arrest

Question 8

Which drug affects alpha1, beta1, and beta 2 receptors and a mixed-acting drug?

Answer 8

Ephedrine

Question 9

What does ephedrine do?

Answer 9

Increases heart rate and blood pressure, and dilation of bronchioles. However, it is not as potent a vasoconstrictor as epinephrine

Question 10

When is ephedrine most helpful?

Answer 10

Orthostatic hypotension, hypotension from spinal anesthesia, mild bronchial asthma