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HESI LPN · HESI LPN Medical Surgical Nursing · HESI Exam Questions on Respiratory System

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Oâ‚‚ dissociation curve shift to R by all of the following except

A. Increase [H+]
B. pCOâ‚‚
C. Increase temperature
D. Carbon monoxide

Expert Explanatory Rationale

Correct Answer: Carbon monoxide

Question 2 of 5

Using the following data, calculate the physiological dead space, Tidal volume = 600 ml, Alveolar ventilation = 4.3 L/min, PaCO2 = 40 mmHg, PECO2 = 28 mmHg:

A. 100 ml
B. 150 ml
C. 180 ml
D. 200 ml

Expert Explanatory Rationale

Correct Answer: 180 ml

Question 3 of 5

A 22-year-old female client is experiencing a new-onset asthmatic attack. Which position is best for this client?

A. High Fowler's
B. Left side-lying.
C. Right side-lying.
D. Supine with pillows under each arm.

Expert Explanatory Rationale

Correct Answer: High Fowler's

Question 4 of 5

The organ of the respiratory system where air is warmed, moistened and cleaned is the:

A. nose
B. pharynx
C. larynx
D. trachea

Expert Explanatory Rationale

Correct Answer: nose

Question 5 of 5

Which one of the following is correct regarding larynx?

A. It houses the vocal cords
B. It prevents the invading pathogens into the trachea
C. It is an organ made of cartilage and connects the pharynx to the trachea
D. All of the above

Expert Explanatory Rationale

Correct Answer: All of the above

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