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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Rationale:
A. The pH is at the lower limit of normal but combined with low bicarbonate indicates imbalance, so not normal.
B. Respiratory acidosis would show increased PaCO₂, but here PaCO₂ is low.
C. Metabolic alkalosis is characterized by elevated bicarbonate, which is not present.
D. Metabolic acidosis is indicated by low HCO₃ (18) and compensatory respiratory alkalosis (low PaCO₂ of 30) to maintain near-normal pH. This fits the ABG results.
Correct Answer is D
Explanation
Rationale:
A. Circumoral numbness and tingling are typically associated with respiratory alkalosis, not acidosis.
B. Muscle flaccidity is more indicative of electrolyte imbalances or late-stage neurologic decline, but not a key early sign of respiratory acidosis.
C. Cool, clammy skin may occur with shock or hypoperfusion, but is not a hallmark sign of respiratory acidosis.
D. Decreased level of consciousness is a key manifestation of acute respiratory acidosis, as rising CO₂ levels depress the central nervous system, leading to confusion, lethargy, and eventually coma if untreated.
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