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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale: While a chest x-ray can provide useful information about the heart and lungs, it is not typically required before an elective cardioversion89.
Choice B rationale: A transesophageal echocardiogram is often performed before cardioversion to check for the presence of any clots in the heart891011.
Choice C rationale: An exercise stress test is not typically required before an elective cardioversion89.
Choice D rationale: A central line placement for thrombolytic medication administration is not typically required before an elective cardioversion89.
So, the correct answer is Choice B, after analyzing all choices.
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.
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