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 B

Explanation

Choice a) is incorrect because troponin is not an enzyme, but a protein. Enzymes are molecules that speed up chemical reactions in the body. Troponin does not have this function.

Choice b) is correct because troponin is a protein that binds to calcium and regulates the contraction of heart muscle fibers. When the heart muscle is injured, such as in a myocardial infarction, troponin leaks into the bloodstream and can be detected by a blood test. The higher the level of troponin, the more severe the damage to the heart.

Choice c) is incorrect because troponin does not help transport oxygen throughout the body. That function is performed by hemoglobin, which is a protein found in red blood cells.

Choice d) is incorrect because troponin is not a lipid, but a protein. Lipids are fats that are used for energy storage and cell membrane formation. Troponin does not have these roles.

A. Flushing of the skin B. Oliguria C. Hypertension D. Bradypnea

Correct Answer is B

Explanation

Choice A Reason: This is incorrect. Flushing of the skin is not a sign of hypovolemic shock, but rather of vasodilation or fever. Hypovolemic shock causes vasoconstriction and pale, cool, clammy skin.

Choice B Reason: This is correct. Oliguria is a decreased urine output that indicates reduced renal perfusion due to hypovolemia. The normal urine output for an adult is 0.5 to 1 mL/kg/hr.

Choice C Reason: This is incorrect. Hypertension is not a sign of hypovolemic shock, but rather of increased vascular resistance or ﬂuid overload. Hypovolemic shock causes hypotension due to decreased blood volume and cardiac output.

Choice D Reason: This is incorrect. Bradypnea is a slow respiratory rate that indicates respiratory depression or fatigue. Hypovolemic shock causes tachypnea due to hypoxia and increased metabolic demand.

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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?

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Naxlex Comprehensive Predictor Exams

Correct Answer is B

Explanation

A nurse is caring for a client who has hypovolemic shock. Which of the following should the nurse recognize as an expected finding?

Correct Answer is B

Explanation

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