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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 B

Explanation

Rationale:
A. Labored and decreased respirations do not describe Kussmaul breathing.
B. Kussmaul respirations are characterized by deep, rapid, and regular breathing as the body attempts to blow off CO₂ to compensate for metabolic acidosis in DKA.
C. Slow respirations are not characteristic of Kussmaul breathing.
D. Respirations that cease are apnea, unrelated to Kussmaul respirations.

A. Request a potassium replacement. B. Administer glucagon IM. C. Check the client for a positive Chvostek's sign. D. Discontinue the TPN infusion.

Correct Answer is A

Explanation

Rationale:

A. Request a potassium replacement: The client's potassium level is 3.0 mEq/L, which indicates hypokalemia (normal range: 3.5–5.0 mEq/L). TPN can cause electrolyte shifts, so potassium supplementation is appropriate and should be initiated to prevent complications like arrhythmias and muscle weakness.

B. Administer glucagon IM: This is used to treat severe hypoglycemia. The client’s glucose is 72 mg/dL, which is within the normal range (70–100 mg/dL fasting), so glucagon is not needed.

C. Check the client for a positive Chvostek's sign: Chvostek’s sign is associated with hypocalcemia, not hypokalemia, and calcium levels were not mentioned as abnormal here.

D. Discontinue the TPN infusion: Discontinuing TPN is not appropriate without a critical reason. Electrolyte imbalances are common during TPN therapy and are typically managed by adjusting the TPN formulation rather than stopping it altogether.

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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 caring for a client with diabetic ketoacidosis (DKA) and documents that the client is experiencing Kussmaul respirations. Based on this documentation, which of the following did the nurse most likely observe?

Correct Answer is B

Explanation

A nurse is reviewing the laboratory values of a client who is receiving total parenteral nutrition (TPN): glucose 72 mg/dL, chloride 100 mEq/L. sodium 138 mEq/L. and potassium 3.0 mEq/L. Which of the following actions should the nurse plan to take?

Correct Answer is A

Explanation

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