The patient is breathing normally. Which process does the nurse consider is working properly when the patient inspires?

Correct Answer: C

Rationale: Normal inspiration involves the diaphragm and intercostal muscles expanding the chest, allowing elastic recoil of lung tissue to facilitate air intake. This is a mechanical process, not a chemical receptor response, oxygen saturation drop, or CO2 binding issue.

Correct Answer: B

Rationale: Atelectasis (lung collapse) improves with coughing to re-expand alveoli and clear secretions, enhancing oxygenation, unlike diuretics, ice packs, or fluid restriction.

Correct Answer: A

Rationale: Tachypnea (rapid breathing) is a compensatory mechanism to increase oxygen intake in hypoxia, unlike bradycardia, hypotension, or lethargy, which suggest decompensation.

Correct Answer: C

Rationale: Chest physiotherapy mobilizes thick secretions, improving airway clearance and oxygenation, more effectively than fluids alone, oxygen, or activity restriction.

Correct Answer: C

Rationale: The Venturi mask delivers a precise fraction of inspired oxygen (FiO2) via adjustable settings, ideal for conditions like COPD, unlike nasal cannula, simple mask, or non-rebreather.