Nursing Elites

1. Which of the following drugs has a therapeutic effect that increases cardiac output and slows heart rate?

• A. Heparin
• B. Alprazolam
• C. Digoxin
• D. Levothyroxine

Correct answer: C

Rationale: Digoxin is the correct answer. It is a medication known for its positive inotropic effects, which increase cardiac output, and negative chronotropic effects, which slow the heart rate. These effects are achieved by inhibiting the sodium-potassium ATPase pump in myocardial cells. Therefore, Digoxin is commonly prescribed to manage conditions like heart failure and atrial fibrillation, where enhancing cardiac output and reducing heart rate are beneficial. Choices A, B, and D are incorrect because Heparin is an anticoagulant, Alprazolam is a benzodiazepine used for anxiety disorders, and Levothyroxine is a thyroid hormone replacement drug, none of which have the specified therapeutic effects on cardiac function.

2. A client who has been taking prednisone to treat asthma is advised to discontinue the medication. The client should be instructed to reduce the dose gradually to prevent which of the following adverse effects?

• A. Hyperglycemia
• B. Adrenocortical insufficiency
• C. Severe dehydration
• D. Rebound pulmonary congestion

Correct answer: B

Rationale: Abruptly stopping prednisone can result in adrenocortical insufficiency due to suppression of the adrenal glands. Gradually tapering the dose helps the body adjust and resume its natural cortisol production, preventing adrenal insufficiency. Choice A, hyperglycemia, is a possible adverse effect of prednisone, but it is not the primary reason for gradual tapering. Severe dehydration (Choice C) and rebound pulmonary congestion (Choice D) are not typically associated with discontinuing prednisone.

3. A client has a new prescription for Verapamil to control hypertension. Which of the following instructions should the nurse include?

• A. Increase the amount of dietary fiber in the diet.
• B. Drink grapefruit juice daily to increase vitamin C intake.
• C. Decrease the amount of calcium in the diet.
• D. Withhold food for 1 hr after taking the medication.

Correct answer: A

Rationale: Increasing dietary fiber intake is essential when taking Verapamil to prevent constipation, a common adverse effect of this medication. Verapamil is a calcium channel blocker used to treat hypertension, and dietary fiber helps maintain bowel regularity and prevent constipation that may occur as a side effect of the medication.

4. A client with congestive heart failure taking digoxin refused breakfast and is complaining of nausea and weakness. Which action should the nurse take first?

• A. Check the client's vital signs.
• B. Request a consult with a dietitian.
• C. Suggest that the client rests before eating the meal.
• D. Request an order for an antiemetic.

Correct answer: A

Rationale: The nurse should check the client's vital signs first because nausea and weakness can be signs of digoxin toxicity. Vital signs can provide immediate information on the client's condition and help guide further interventions. Monitoring vital signs will allow the nurse to assess for bradycardia, a common sign of digoxin toxicity. Requesting a dietitian consult (choice B) may be necessary but addressing the immediate concern of toxicity is the priority. Suggesting rest before eating (choice C) may not address the underlying issue of digoxin toxicity. Requesting an antiemetic (choice D) can be considered later but is not the initial action needed in this situation.

5. A healthcare professional is preparing to administer heparin 15,000 units subcutaneously every 12 hours. The available heparin injection is 20,000 units/mL. How many milliliters should the healthcare professional administer per dose?

• A. 0.8 mL
• B. 0.75 mL
• C. 0.5 mL
• D. 1 mL

Correct answer: A

Rationale: To calculate the volume to administer, use the formula: Desired dose / Concentration = Volume to administer. In this case, (15,000 units / 20,000 units/mL) = 0.75 mL. Since the volume needs to be rounded up to the nearest tenth, the correct answer is 0.8 mL. Choice B (0.75 mL) is incorrect because it does not account for rounding up the volume. Choices C (0.5 mL) and D (1 mL) are incorrect as they do not reflect the precise calculation based on the given concentration and desired dose.

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