A nurse is preparing to administer dabigatran to a client who has atrial fibrillation. The nurse should explain that the purpose of this medication is which of the following?

To slow the response of the ventricles to the fast atrial impulses

To dissolve clots in the bloodstream

To reduce the risk of stroke in clients who have atrial fibrillation

To convert atrial fibrillation to sinus rhythm

Answer and Explanation

The Correct Answer is C

Choice A Reason: This is incorrect because dabigatran does not aﬀect the electrical activity of the heart or the conduction system. It does not slow down the ventricular response to the atrial impulses.

Choice B Reason: This is incorrect because dabigatran does not dissolve existing clots in the bloodstream. It only prevents new clots from forming.

Choice C Reason: This is correct because dabigatran reduces the risk of stroke in clients who have atrial fibrillation by preventing clot formation and reducing blood viscosity. Dabigatran is an anticoagulant medication that prevents the formation of blood clots in the heart and blood vessels. Atrial fibrillation is a condition where the atria beat irregularly and rapidly, which can cause blood to pool and clot in the heart chambers. These clots can travel to the brain and cause a stroke. Dabigatran reduces the risk of stroke by preventing clot formation and reducing blood viscosity.

Choice D Reason: This is incorrect because dabigatran does not restore normal sinus rhythm in clients who have atrial fibrillation. It does not aﬀect the heart rate or rhythm.

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Correct Answer is D

Explanation

Choice A Reason: This is incorrect because this client has signs of brain death, such as severe head injuries, low respiratory rate, and unresponsiveness. The nurse should tag this client as black, which means deceased or expectant.

Choice B Reason: This is incorrect because this client has non-life-threatening injuries, such as a simple fracture and scratches. The nurse should tag this client as green, which means minor or delayed care.

Choice C Reason: This is incorrect because this client has minor injuries and is able to walk around. The nurse should tag this client as green, which means minor or delayed care.

Choice D Reason: This is correct because this client has a life-threatening condition called tension pneumothorax, which requires immediate care. This client has a life-threatening condition called tension pneumothorax, which is caused by air leaking into the pleural space and compressing the lung and the heart. This can lead to respiratory failure, cardiac arrest, and death if not treated immediately. The hissing sound indicates that air is escaping from the lung through the wound. The nurse should tag this client as red, which means immediate care is needed.

A. Slow the rate to 50 mL/hr. B. Slow the rate to 20 mL/hr. C. Continue the rate at 125 mL/hr. D. Increase the rate to 250 mL/hr.

Correct Answer is C

Explanation

The correct answer is: C. Continue the rate at 125 mL/hr.
Choice A: Slow the rate to 50 mL/hr
Slowing the IV fluid rate to 50 mL/hr is not appropriate for a patient with a head injury. Adequate fluid management is crucial to maintain cerebral perfusion pressure and prevent secondary brain injury. Reducing the rate to 50 mL/hr could lead to hypovolemia, which might decrease cerebral perfusion and worsen the patient’s condition.
Choice B: Slow the rate to 20 mL/hr
Slowing the IV fluid rate to 20 mL/hr is even less appropriate. Such a low rate would likely result in significant hypovolemia, severely compromising cerebral perfusion pressure. This could exacerbate the patient’s head injury by reducing the blood flow to the brain, leading to further damage.
Choice C: Continue the rate at 125 mL/hr
Continuing the rate at 125 mL/hr is appropriate. This rate helps maintain euvolemia, which is essential for ensuring adequate cerebral perfusion pressure in patients with head injuries. Maintaining a stable fluid rate helps prevent both hypovolemia and hypervolemia, both of which can negatively impact intracranial pressure and cerebral perfusion.
Choice D: Increase the rate to 250 mL/hr
Increasing the IV fluid rate to 250 mL/hr is not recommended. Overhydration can lead to increased intracranial pressure, which can be detrimental to a patient with a head injury. Excessive fluid administration can cause cerebral edema, worsening the patient’s condition.

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A nurse is preparing to administer dabigatran to a client who has atrial fibrillation. The nurse should explain that the purpose of this medication is which of the following?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is D

Explanation

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Correct Answer is C

Explanation

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