Nursing Elites

1. What is pharmacodynamics?

• A. The medical reference summarizing standards of drug purity, strength, and directions for synthesis
• B. The drug's actions at receptor sites and the physiological, chemical, and behavioral effects produced by these actions
• C. The maximum response that a drug can produce
• D. Movements of the drugs throughout the body

Correct answer: B

Rationale: Pharmacodynamics refers to the drug's actions at receptor sites and the physiological, chemical, and behavioral effects produced by these actions. It involves understanding how drugs interact with the body at the molecular level to produce their effects, including mechanisms of action, receptor binding, and downstream physiological responses. Choice A is incorrect because it describes pharmacopeia, which is a reference book containing standards for drugs. Choice C refers to efficacy, which is the maximum effect a drug can produce. Choice D describes pharmacokinetics, which focuses on the movement of drugs within the body.

2. Which of the following conditions is not treated with Ephedrine?

• A. COPD
• B. Hypotension
• C. Congestion
• D. Incontinence

Correct answer: A

Rationale: Ephedrine is not typically used to treat COPD. While it can help relieve symptoms like congestion and hypotension, it is not a first-line treatment for COPD. Incontinence is not a condition commonly treated with Ephedrine either.

3. When reviewing a client's health record, a healthcare professional notes that the client is experiencing episodes of hypokalemia. Which of the following medications should be identified as a cause of the client's hypokalemia?

• A. Captopril
• B. Lisinopril
• C. Furosemide
• D. Spironolactone

Correct answer: C

Rationale: Furosemide, a loop diuretic, can lead to hypokalemia by increasing the excretion of potassium in the urine. This potassium loss can result in lower-than-normal levels of potassium in the body, leading to hypokalemia.

4. A healthcare provider is caring for a client who has a new prescription for Clonidine. Which of the following adverse effects should the healthcare provider monitor?

• A. Drowsiness
• B. Dry mouth
• C. Weight gain
• D. Insomnia

Correct answer: B

Rationale: The correct answer is B: Dry mouth. Dry mouth is a common adverse effect of Clonidine. Clonidine can cause a reduction in salivary flow, leading to dry mouth. This symptom can be managed by increasing fluid intake or using sugar-free gum or candy to stimulate saliva production. Choices A, C, and D are incorrect. While drowsiness and insomnia are potential side effects of Clonidine, dry mouth is more commonly reported. Weight gain is not typically associated with Clonidine use.

5. When taking Digoxin, low levels of what can cause toxicity?

• A. Potassium
• B. Calcium
• C. Sodium
• D. Magnesium

Correct answer: A

Rationale: Low potassium levels can lead to Digoxin toxicity. Digoxin competes with potassium for binding sites on the sodium-potassium pump. When potassium levels are low, there is an increased risk of Digoxin binding and toxicity. Choice B (Calcium) is incorrect because low calcium levels are not directly linked to Digoxin toxicity. Choice C (Sodium) is incorrect as low sodium levels do not cause Digoxin toxicity. Choice D (Magnesium) is incorrect as low magnesium levels do not contribute to Digoxin toxicity.

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