The nurse has completed discharge teaching for a client who will be going home on oxygen therapy. What statement made by the client would indicate that this client needs further instruction?

Correct Answer: A

Rationale: Polyester blankets (A) produce static electricity increasing fire risk with oxygen indicating a need for further instruction. Prohibiting smoking (B) checking grounding (C) and having a fire extinguisher (D) are correct safety measures. Thus A is incorrect as cotton or wool is safer to avoid static sparks in an oxygen-rich environment.

Correct Answer: D

Rationale: Low oxygen (hypoxemia) stimulates carotid bodies (D) located at the carotid artery bifurcation and aortic bodies which signal the respiratory center to increase ventilation. Alveoli (A) trachea (B) and bronchioles (C) do not directly sense oxygen levels making D the correct area influencing respiratory response to hypoxia.

Correct Answer: C

Rationale: Humidifiers add moisture to prevent drying of mucous membranes and loosen secretions (C) indicating effective instruction. They do not remove moisture (A) or tighten secretions (B). They do not replace oxygen (D) making C the correct understanding of humidifier purpose.

Correct Answer: C

Rationale: Myocardial infarction (MI) impairs cardiac output reducing oxygen delivery and increasing hypoxemia risk (C) closely linking cardiovascular and respiratory systems. Renal failure (A) gastric ulcers (B) and strokes (D) are possible but secondary concerns making C the greatest immediate respiratory-related concern post-MI.