A nurse is caring for a client who has a serum potassium level of 5.5 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?

Restoration of QRS Complex amplitude.

Shortening of P-wave duration.

Widening of the QRS complex.

Reduction of T-wave amplitude.

Answer and Explanation

The Correct Answer is D

The correct answer is choice D: Reduction of T-wave amplitude.

Choice A rationale:

The amplitude of the QRS complex is not directly affected by changes in serum potassium levels. It represents ventricular depolarization, and its restoration would not be an expected outcome of polystyrene sulfonate treatment

Choice B rationale:

Shortening of the P-wave duration is not an expected change with polystyrene sulfonate treatment. The P-wave represents atrial depolarization, which is not significantly impacted by the administration of this medication

Choice C rationale:

Widening of the QRS complex is associated with high serum potassium levels. The goal of polystyrene sulfonate treatment is to lower potassium levels and, thus, return the QRS complex to its normal width

Choice D rationale:

Polystyrene sulfonate aims to reduce serum potassium levels. When effective, this should result in a reduction of T-wave amplitude, which is a common ECG change seen with hyperkalemia

In conclusion, choice D is the correct answer, as a reduction in T-wave amplitude would be the expected change on the client's ECG if polystyrene sulfonate effectively lowers their serum potassium level.

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

Explanation

The correct answer is A. Limit intake of canned soups and D. Read labels on foods before eating.

Choice A rationale:

Canned soups often contain high levels of sodium, which can contribute to exceeding the recommended daily sodium intake. Limiting these can help manage sodium levels effectively.

Choice B rationale:

Choosing diet sodas over bottled water is not advisable. Diet sodas can still contain sodium and other additives that are not beneficial for a low-sodium diet. Bottled water is a better choice as it typically contains no sodium.

Choice C rationale:

Bottled salad dressings often contain high amounts of sodium. Opting for homemade or low-sodium versions is a better strategy for maintaining a low-sodium diet.

Choice D rationale:

Reading labels on foods before eating is crucial for identifying hidden sources of sodium and making informed dietary choices. This practice helps in adhering to a low-sodium diet by avoiding foods with high sodium content.

: 3

A. Contraction of the facial muscles. B. Complaints of fingers tingling. C. Carpal spasm with blood pressure measurement. D. Asked when the foot numbness would go away.

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

Explanation

Choice A rationale:

The nurse considered contraction of facial muscles as a finding of hypocalcemia because it is associated with Chvostek's sign, which indicates neuromuscular irritability due to low calcium levels.

Choice B rationale:

Complaints of fingers tingling are indicative of hypocalcemia since tingling sensations (paresthesias) in the extremities can result from decreased calcium levels affecting nerve function.

Choice C rationale:

Carpal spasm with blood pressure measurement is known as Trousseau's sign and is associated with hypocalcemia. When the blood pressure cuff is inflated above systolic pressure, it can cause tetany in the hand if the calcium levels are low.

Choice D rationale:

Asking when foot numbness would go away does not directly relate to hypocalcemia or its symptoms. It is not a finding used to come to the conclusion of hypocalcemia in this scenario.

Choice E rationale:

The heart rate being 88 and regular does not directly indicate hypocalcemia. While hypocalcemia can lead to cardiac arrhythmias, a heart rate of 88 and regular is within the normal range and not a specific finding for hypocalcemia.

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A nurse is caring for a client who has a serum potassium level of 5.5 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

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