Respiratory System Exam Questions

Respiratory System Exam Questions Related

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A charge nurse is rounding on several older clients on ventilators in the Intensive Care Unit whom the nurse identifies as being at high risk for ventilator-associated pneumonia. To reduce this risk what activity would the nurse delegate to the assistive personnel (AP)?

  • A. Encourage between-meal snacks.
  • B. Monitor temperature every 4 hours.
  • C. Provide oral care every 4 hours.
  • D. Report any new onset of cough.
Correct Answer: C

Rationale: The correct answer is C: Provide oral care every 4 hours. Oral care helps prevent ventilator-associated pneumonia by reducing the risk of oral bacteria being aspirated into the lungs. The AP can assist with oral care under the nurse's supervision.
A: Encouraging between-meal snacks does not directly address pneumonia risk.
B: Monitoring temperature is important but not specific to ventilator-associated pneumonia prevention.
D: Reporting new cough onset is important but does not directly reduce the risk of ventilator-associated pneumonia.

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What does a nurse assess postoperatively in a client with a nasal fracture?

  • A. Allergic reaction
  • B. Airway obstruction
  • C. Extreme sense of smell
  • D. Stridor
Correct Answer: B

Rationale: The correct answer is B. Airway obstruction is a critical concern after a nasal fracture due to potential swelling or displacement of bone fragments. A (allergic reaction) is unrelated. C (extreme sense of smell) is not a concern postoperatively. D (stridor) indicates severe airway compromise but is less common in nasal fractures.

A nurse is teaching a client about possible complications and hazards of home oxygen therapy. About which complications doesn't the nurse plan to teach the client?

  • A. Absorptive atelectasis
  • B. Combustion
  • C. Dried mucous membranes
  • D. Alveolar recruitment
Correct Answer: D

Rationale: The correct answer is D - Alveolar recruitment. This is because alveolar recruitment is actually a benefit of home oxygen therapy, not a complication. It helps improve oxygenation by opening up collapsed alveoli.

A - Absorptive atelectasis is a potential complication where nitrogen is absorbed from the alveoli leading to collapse. B - Combustion is a hazard due to oxygen's flammability. C - Dried mucous membranes is a common complication of oxygen therapy due to the drying effect of oxygen.

The concentration of carbon dioxide in the earth's atmosphere is

  • A. 0.004 percent.
  • B. 0.04 percent.
  • C. 0.4 percent
  • D. 4.0 percent.
Correct Answer: B

Rationale: The correct answer is B (0.04 percent) because the concentration of carbon dioxide in the Earth's atmosphere is around 400 parts per million (ppm), which is equivalent to 0.04 percent. This concentration is widely accepted by scientific research and measurements. Choice A (0.004 percent) is too low and doesn't accurately reflect the actual concentration. Choice C (0.4 percent) and choice D (4.0 percent) are both too high, which are significantly above the current levels of carbon dioxide in the atmosphere. Therefore, B is the correct choice as it aligns with the established scientific data on carbon dioxide concentration in the atmosphere.

which component of pharynx received the Eustachian tube

  • A. oropharynx
  • B. laryngopharynx
  • C. Nasopharynx
  • D. none of these
Correct Answer: C

Rationale: The correct answer is C: Nasopharynx. The Eustachian tube connects the middle ear to the nasopharynx, allowing for pressure equalization. The oropharynx (A) and laryngopharynx (B) do not directly receive the Eustachian tube. Choice D is incorrect as the Eustachian tube does connect to a specific part of the pharynx.

Mammalian RBC respire anaerobically because

  • A. It has stroma inside
  • B. It has Haemoglobin
  • C. It lacks Mitochondria
  • D. It has bicarbonate ions inside
Correct Answer: C

Rationale: The correct answer is C because mammalian RBCs lack mitochondria, which are responsible for aerobic respiration. Without mitochondria, RBCs are unable to perform oxidative phosphorylation to generate ATP aerobically. Stroma (A) is found in chloroplasts, not RBCs. Hemoglobin (B) is responsible for oxygen transport, not cellular respiration. Bicarbonate ions (D) are involved in the buffering system of blood, not in cellular respiration. Therefore, the lack of mitochondria is the key reason for RBCs to respire anaerobically.

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