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The physician orders an IV of 20mEq of potassium chloride in 1000mL of 0.9% NS to infuse over 6 hours. Calculate the flow rate in milliliters per hour. Round to the nearest whole number

Answer and Explanation

The Correct Answer is ["167"]

Rationale:

Step 1: Identify what is given
Total IV fluid volume: 1000 mL
Total infusion time: 6 hours

Step 2: Use the formula for flow rate
Flow rate (mL/hr) = Total volume (mL) ÷ Time (hr)

Step 3: Substitute the values
Flow rate = 1000 mL ÷ 6 hr = 166.67 mL/hr

Step 4: Round to the nearest whole number
166.67 mL/hr ≈ 167 mL/hr

Final Answer: The nurse should set the IV flow rate to 167 mL/hr.

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Correct Answer is D

Explanation

Rationale:
A. Metabolic acidosis is characterized by Kussmaul respirations (deep and rapid breathing), but not typically lightheadedness or paresthesias.
B. Metabolic alkalosis often presents with hypoventilation as the body tries to retain CO₂, not hyperventilation.
C. Respiratory acidosis results from hypoventilation, leading to CO₂ retention, not the excessive breathing seen in this case.
D. Respiratory alkalosis is caused by hyperventilation, which leads to excessive loss of CO₂, resulting in symptoms such as lightheadedness, confusion, paresthesias, and blurred vision — all present in this client.

A. Have the laboratory draw a blood sample for an erythrocyte sedimentation rate. B. Administer potassium gluconate 40 mEq orally. C. Restrict fluid intake. D. Obtain a 12-lead ECG.

Correct Answer is D

Explanation

Rationale:
A. An erythrocyte sedimentation rate (ESR) is used to detect inflammation but is not relevant in the immediate management of hyperkalemia.
B. Administering potassium would worsen the client's already elevated potassium level.
C. Restricting fluids is not an appropriate initial response for hyperkalemia and can increase the risk of complications.
D. A potassium level of 6.8 mEq/L is critically high and can cause life-threatening cardiac dysrhythmias. A 12-lead ECG is essential to assess for cardiac effects of hyperkalemia, such as peaked T waves or widened QRS complexes.

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The physician orders an IV of 20mEq of potassium chloride in 1000mL of 0.9% NS to infuse over 6 hours. Calculate the flow rate in milliliters per hour. Round to the nearest whole number

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is assisting with the admission of a client who is hyperventilating, reports lightheadedness and paresthesias, has blurred vision, and a new onset of confusion. The nurse should suspect that the client has developed which of the following imbalances?

Correct Answer is D

Explanation

A nurse is reviewing the laboratory values for a client who takes spironolactone and notes that the client's serum potassium level is 6.8 mEq/L. The nurse notifies the provider and anticipates that the provider will provide which of the following instructions?

Correct Answer is D

Explanation

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