a nurse is administering a dopamine infusion at a low dose to a client who has severe heart failure which of the following findings is an expected eff

ATI RN

ATI Pharmacology Quizlet

1. A healthcare provider is administering a Dopamine infusion at a low dose to a client who has severe heart failure. Which of the following findings is an expected effect of this medication?

A. Lowered heart rate
B. Increased myocardial contractility
C. Decreased conduction through the AV node
D. Vasoconstriction of renal blood vessels

Correct answer: B

Rationale: Dopamine, when administered at a low dose, acts on beta1 receptors in the heart, leading to increased myocardial contractility. This positive inotropic effect results in improved cardiac output, which is beneficial for a client with severe heart failure. Dopamine does not typically cause lowered heart rate, decreased conduction through the AV node, or vasoconstriction of renal blood vessels at low doses.

2. A client with HIV is starting therapy with zidovudine. The nurse should monitor the client for which of the following adverse effects of this medication?

A. Fatigue
B. Blurred vision
C. Ringing in the ears
D. Constipation

Correct answer: A

Rationale: Fatigue is a common adverse effect of zidovudine due to its impact on bone marrow, leading to anemia. Zidovudine is known to cause bone marrow suppression, resulting in decreased production of red blood cells and subsequent fatigue.

3. What is the antidote for Warfarin?

A. Vitamin D
B. Vitamin C
C. Vitamin K
D. Vitamin B6

Correct answer: C

Rationale: Vitamin K is the antidote for Warfarin toxicity as it helps reverse the anticoagulant effects of Warfarin. Warfarin works by inhibiting vitamin K-dependent clotting factors, and administering vitamin K can replenish these factors, thereby counteracting the anticoagulant effects of Warfarin. Vitamin D, Vitamin C, and Vitamin B6 do not have the specific mechanism to counteract the anticoagulant effects of Warfarin, making them incorrect choices.

4. A client has a new prescription for Levodopa/Carbidopa for Parkinson's disease. Which of the following instructions should the nurse include?

A. Increase intake of protein-rich foods.
B. Expect muscle twitching to occur.
C. Take this medication with food.
D. Anticipate relief of manifestations in 24 hours.

Correct answer: C

Rationale: The correct instruction for the nurse to include is to advise the client to take Levodopa/Carbidopa with food. This recommendation helps reduce gastrointestinal side effects commonly associated with this medication. Food can help minimize nausea and other stomach-related issues that may occur when taking Levodopa/Carbidopa. Options A, B, and D are incorrect. Increasing intake of protein-rich foods is not necessary with this medication. Muscle twitching is not an expected side effect of Levodopa/Carbidopa. Anticipating relief of manifestations in 24 hours is unrealistic as it may take days to weeks for the full therapeutic effect of the medication to be achieved.

5. Which of the following is the antidote for lead poisoning?

A. Naloxone
B. Nitrite
C. CaEDTA
D. Dialysis

Correct answer: C

Rationale: Calcium disodium ethylenediaminetetraacetic acid (CaEDTA) is the antidote for lead poisoning. CaEDTA works by chelating lead, forming a complex that is then excreted in the urine. It is used in chelation therapy to treat lead poisoning by reducing lead levels in the body.