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A nurse is caring for a client who is receiving IV diltiazem for atrial fibrillation. Which of the following findings is a contraindication to the administration of diltiazem?
- A. Hypotension
- B. Tachycardia
- C. Decreased level of consciousness
- D. History of diuretic use
Correct Answer: A
Rationale: The correct answer is A: Hypotension. Diltiazem can cause further lowering of blood pressure, so it should not be administered if the client is already hypotensive. Monitoring blood pressure is crucial before giving diltiazem. Choice B, tachycardia, is not a contraindication for diltiazem use; in fact, diltiazem is used to slow down the heart rate. Choice C, decreased level of consciousness, may indicate other issues but is not a direct contraindication for diltiazem. Choice D, history of diuretic use, is not a contraindication by itself; however, caution should be exercised when diltiazem is given with diuretics due to potential interactions.
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A nurse is teaching a newly licensed nurse about contraindications to ceftriaxone. The nurse should include a severe allergy to which of the following medications as a contraindication to ceftriaxone?
- A. Gentamicin
- B. Clindamycin
- C. Piperacillin
- D. Sulfamethoxazole-trimethoprim
Correct Answer: C
Rationale: Ceftriaxone is a cephalosporin, and individuals with a penicillin allergy (such as Piperacillin) may have cross-sensitivity, making it contraindicated. Gentamicin (Choice A) belongs to the aminoglycoside class, not related to cephalosporins. Clindamycin (Choice B) is a lincosamide antibiotic and is not typically associated with cross-allergies to cephalosporins. Sulfamethoxazole-trimethoprim (Choice D) is a sulfonamide antibiotic, also not directly related to ceftriaxone.
A nurse is caring for a client who has congestive heart failure and is taking digoxin. The client reports nausea and refuses to eat breakfast. Which of the following actions should the nurse take first?
- A. Encourage the client to eat the toast on the breakfast tray
- B. Administer an antiemetic
- C. Inform the client's provider
- D. Check the client's apical pulse
Correct Answer: D
Rationale: The correct answer is to check the client's apical pulse first. Nausea can be a sign of digoxin toxicity, and assessing the client's heart rate is crucial in this situation. Administering an antiemetic or encouraging the client to eat should come after ensuring the client's safety. While informing the provider is important, the immediate concern is to assess for potential digoxin toxicity by checking the client's apical pulse.
A nurse is planning to administer diltiazem via IV bolus to a client who has atrial fibrillation. Which of the following findings is a contraindication to the administration of diltiazem?
- A. Hypotension
- B. Tachycardia
- C. Decreased level of consciousness
- D. History of diuretic use
Correct Answer: A
Rationale: The correct answer is A: Hypotension. Diltiazem, a calcium channel blocker, can cause hypotension. Administering diltiazem to a client with hypotension can further lower their blood pressure, leading to adverse effects like dizziness and syncope. Tachycardia (Choice B) is actually a common indication for diltiazem use, as it helps slow down the heart rate in conditions like atrial fibrillation. Decreased level of consciousness (Choice C) may require evaluation but is not a direct contraindication to diltiazem administration. History of diuretic use (Choice D) is not a contraindication to diltiazem, as the two medications can often be safely used together.
A nurse in an outpatient facility is assessing a client who is prescribed furosemide 40 mg daily, but the client reports she has been taking extra doses to promote weight loss. Which of the following indicates she is dehydrated?
- A. Urine specific gravity of 1.035
- B. Oliguria, increased urine concentration, and an increase in urine specific gravity greater than 1.030
- C. Polyuria
- D. Hypotension
Correct Answer: B
Rationale: Oliguria (reduced urine output), increased urine concentration, and a urine specific gravity greater than 1.030 are indicative of dehydration, particularly in clients using diuretics excessively. Choice A is incorrect because a urine specific gravity of 1.035 is high, indicating concentrated urine but not specifically dehydration. Choice C, polyuria, refers to increased urine output and is not consistent with dehydration. Choice D, hypotension, is a sign of fluid volume deficit but is not specific to dehydration as described in the scenario.
A nurse is planning to administer chlorothiazide 20 mg/kg/day PO divided equally and administered twice daily for a toddler who weighs 28.6 lb. How many mL should the nurse administer per dose? (Round to the nearest tenth)
- A. 2.6 mL
- B. 2.2 mL
- C. 3.5 mL
- D. 5.0 mL
Correct Answer: A
Rationale: The correct calculation is as follows: The toddler's weight in kg is 13 kg (28.6 lb / 2.2 lb/kg). The total daily dose is 260 mg (20 mg x 13 kg). Therefore, the dose per administration is 130 mg (260 mg / 2). Given the concentration of 250 mg/5 mL, the dose in mL is 2.6 mL (130 mg / (250 mg/5 mL)). Therefore, the nurse should administer 2.6 mL per dose. Choice B, 2.2 mL, is incorrect as it does not reflect the correct calculation. Choices C and D, 3.5 mL and 5.0 mL, are also incorrect and do not align with the accurate dosage calculation based on the given scenario.