Adrenergic Antagonists

Question 1

1. When a patient has experienced extravasation of a systemic infusion of dopamine, the nurse will inject the α-blocker phentolamine (Rogitine) into the area of extravasation and expect which effect?
   a. Vasoconstriction
   b. Vasodilation
   c. Analgesia
   d. Hypotension

Answer 1

B

Question 2

2. When administering β-blockers, the nurse will follow which guideline for administration and monitoring?
   a. The drug may be discontinued at any time.
   b. Orthostatic hypotension rarely occurs with this drug.
   c. Tapering off the medication is necessary to prevent rebound hypertension.
   d. The patient needs to stop taking the medication at once upon a 1.5- to 2-kg weight gain in a week.

Answer 2

C

Question 3

3. The nurse providing teaching for a patient who has a new prescription for β1-blockers will anticipate that these drugs may result in which effect?
   a. Tachycardia
   b. Tachypnea
   c. Bradycardia
   d. Bradypnea

Answer 3

C

Question 4

4. A patient who has recently had a myocardial infarction has started therapy with a β-blocker. The nurse explains that the main purpose of the β-blocker for this patient is to:
   a. Cause vasodilation of the coronary arteries
   b. Prevent hypertension
   c. Increase conduction through the SA node
   d. Protect the heart from circulating catecholamines

Answer 4

D

Question 5

5. Before initiating therapy with a nonselective β-blocker, the nurse will assess the patient for a history of which condition?
   a. Hypertension
   b. Liver disease
   c. Pancreatitis
   d. Asthma

Answer 5

D

Question 6

6. A patient is taking an α-blocker as treatment for benign prostatic hyperplasia. The nurse will monitor for which potential drug effects? (Select all that apply.)
   a. Orthostatic hypotension
   b. Increased blood pressure
   c. Increased urine flow
   d. Headaches
   e. Bradycardia

Answer 6

A,C,D