A nurse is caring for a client who has a serum potassium level of 5.9 mEq/L. The provider prescribes polystyrene sulfonate. If this medication is effective, the nurse should expect which of the following changes on the client's ECG?

Prolonged PR intervals

Widening QRS Complex

A reduction of a peaked T wave

An increase in T wave amplitude

Answer and Explanation

The Correct Answer is C

Choice A rationale: Prolonged PR intervals are not typically associated with the use of polystyrene sulfonate2.

Choice B rationale: Widening of the QRS complex is not typically seen with the use of polystyrene sulfonate2.

Choice C rationale: Polystyrene sulfonate is used to treat hyperkalemia (high potassium levels). As potassium levels decrease, the peaked T wave seen in hyperkalemia may reduce234.

Choice D rationale: An increase in T wave amplitude is not typically associated with the use of polystyrene sulfonate2.

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Correct Answer is ["A","B","C","D"]

Explanation

Choice A rationale: Vitamin K is given to counteract the effects of anticoagulants like warfarin, which might have been administered to manage atrial fibrillation1.

Choice B rationale: Heparin is an anticoagulant often used in the initial management of atrial fibrillation to prevent the formation of clots2.

Choice C rationale: PT, PTT, and INR are lab tests used to monitor the effectiveness of anticoagulation therapy1.

Choice D rationale: Coumadin (warfarin) is a long-term anticoagulant therapy often used in the management of atrial fibrillation1.

Choice E rationale: Verapamil is a calcium channel blocker, not typically the first line of treatment for atrial fibrillation3.

So, the correct answer is Choices A, B, C, and D, after analyzing all choices.

A. First-degree AV block B. Sinus bradycardia C. Sinus tachycardia D. Atrial fibrillation

Correct Answer is D

Explanation

Choice A rationale: First-degree AV block is a type of heart block, not a dysrhythmia associated with palpitations, fatigue, and dizziness12.

Choice B rationale: Sinus bradycardia is a slow heart rate, not a rapid and irregular one12.

Choice C rationale: Sinus tachycardia is a fast heart rate but it is regular, not irregular12.

Choice D rationale: Atrial fibrillation is a fast and irregular heart rate, which aligns with the symptoms described34.

So, the correct answer is Choice D, after analysing all choices.

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A nurse is caring for a client who has a serum potassium level of 5.9 mEq/L. The provider prescribes polystyrene sulfonate. If this medication is effective, the nurse should expect which of the following changes on the client's ECG?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Correct Answer is ["A","B","C","D"]

Explanation

A nurse in an urgent care center is assessing a client who reports a sudden onset of irregular palpitations, fatigue, and dizziness. The nurse finds a rapid and irregular heart rate on the cardiac monitor. Which dysrhythmias should the nurse expect to find on the EKG?

Correct Answer is D

Explanation

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