PAX PAX (RN) 5 — Questions and Answers
Question 1: A nurse must infuse 500 mL of IV fluid over 4 hours. What is the flow rate in mL/hour?
- 100 mL/hr
- 125 mL/hr (Correct answer)
- 150 mL/hr
- 200 mL/hr
Correct answer: 125 mL/hr
Flow rate = total volume ÷ time = 500 mL ÷ 4 hr = 125 mL/hr.
Question 2: Which of the following is the correct meaning of 'diaphoresis'?
- Difficulty breathing
- Excessive sweating (Correct answer)
- Abnormal thirst
- Rapid pulse
Correct answer: Excessive sweating
Diaphoresis refers to excessive or profuse sweating and can be a sign of various clinical conditions.
Question 3: Newton's Second Law of Motion states that force equals:
- Mass × velocity
- Mass × acceleration (Correct answer)
- Weight × speed
- Momentum ÷ time
Correct answer: Mass × acceleration
Newton's Second Law is F = ma, where F is force, m is mass, and a is acceleration.
Question 4: Which of the following sentences contains a dangling modifier?
- Running quickly, she reached the hospital on time.
- Having read the chart, the nurse administered the medication.
- Walking down the hall, the medication cart was pushed aside. (Correct answer)
- After reviewing the results, the physician ordered more tests.
Correct answer: Walking down the hall, the medication cart was pushed aside.
In 'Walking down the hall, the medication cart was pushed aside,' the participial phrase implies the cart was walking, which is a dangling modifier.
Question 5: What is the role of insulin in the body?
- Break down fats for energy
- Stimulate glucagon release
- Facilitate glucose uptake into cells (Correct answer)
- Increase blood glucose levels
Correct answer: Facilitate glucose uptake into cells
Insulin, produced by the pancreas, allows cells to take up glucose from the bloodstream, lowering blood sugar levels.
Question 6: If a car depreciates from $24,000 to $18,000, what is the percent decrease?
- 20%
- 25% (Correct answer)
- 30%
- 33%
Correct answer: 25%
Percent decrease = (original − new) ÷ original × 100 = (24,000 − 18,000) ÷ 24,000 × 100 = 25%.
Question 7: Which of the following best describes the function of the lymphatic system?
- Produce red blood cells
- Filter blood through the kidneys
- Return excess interstitial fluid to the bloodstream (Correct answer)
- Regulate hormone secretion
Correct answer: Return excess interstitial fluid to the bloodstream
The lymphatic system collects excess interstitial fluid and returns it to the venous bloodstream, also playing a key role in immunity.
PAX PAX (RN) 5
A nurse must infuse 500 mL of IV fluid over 4 hours.
What is the flow rate in mL/hour?