Nokea
A client uses levodopa for treatment of Parkinson's disease. The client is now prescribed an adrenergic blocking agent. The nurse would assess the client for which of the following?
- A. Decreased effect of levodopa
- B. Increased effect of adrenergic blocker
- C. Increased risk of levodopa toxicity
- D. Decreased risk of psychotic behavior
Correct Answer: A
Rationale: When levodopa and adrenergic blockers are administered together, the effect of the levodopa is decreased. Therefore, the client's Parkinson's disease may not be controlled as effectively as before. The effect of the adrenergic blocker is not increased, nor is the risk for levodopa toxicity. The client is not experiencing psychotic behavior.
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A nurse is preparing to administer a centrally acting adrenergic blocker to a group of clients. The nurse would be especially cautious when administering the drug to which client?
- A. Client with diabetes
- B. Client with chronic bronchitis
- C. Client with renal function impairment
- D. Client with impaired hepatic function
Correct Answer: C
Rationale: The nurse should administer centrally acting adrenergic blockers cautiously to clients with renal function impairment. The a/b-adrenergic blocking drugs should be used cautiously in clients with diabetes, chronic bronchitis, and impaired hepatic function.
A nurse understands that while most b-adrenergic receptors are found in the heart, they are also commonly found in which other organs?
- A. Pancreas
- B. Eyes
- C. Liver
- D. Lungs
- E. Skin
Correct Answer: B,D
Rationale: b-adrenergic receptors are also found in the eyes and lungs. The blockage of these receptors can be beneficial in treatment of glaucoma or cause adverse reactions in the lungs (bronchospasms).
A nurse is preparing to administer propranolol to a client for the treatment of cardiac arrhythmias. The nurse checks the client's apical pulse rate and blood pressure before administration and notes that the pulse rate is below 60 bpm. Which of the following would the nurse do next?
- A. Provide proper ventilation to the client
- B. Delay drug administration for some time
- C. Withhold the drug and contact the primary health care provider
- D. Immediately give oxygen via face mask
Correct Answer: C
Rationale: The nurse should withhold the drug and contact the primary health care provider if the pulse rate of the client is below 60 bpm. Providing proper ventilation to the client, delaying drug administration for some time, or providing oxygen support to the client would be inappropriate for this client.
A group of nursing students are reviewing information about adrenergic blockers in preparation for an examination. The students demonstrate understanding of the information when they identify which of the following as an a/b-adrenergic blocker?
- A. Phentolamine
- B. Bisoprolol
- C. Nadolol
- D. Carvedilol
- E. Labetalol
Correct Answer: D,E
Rationale: Carvedilol and labetalol are a/b-adrenergic blockers. Phentolamine is an a-adrenergic blocker. Bisoprolol and nadolol are b-adrenergic blockers.
A client with a cardiac problem is treated with b-adrenergic blocking drugs. Which of the following should the nurse identify as a cardiac reaction that impacts the body when a b-adrenergic blocking drug is given to the client?
- A. Vomiting
- B. Hyperglycemia
- C. Nausea
- D. Vertigo
Correct Answer: D
Rationale: The nurse should identify vertigo as the cardiac reaction that impacts the body when a b-adrenergic blocking drug is given to the client. Vomiting, nausea, and hyperglycemia are not cardiac reactions; they are gastrointestinal reactions that are observed when the client is administered b-adrenergic blocking drugs.