Which of the following patients is breathing adequately?

• A. A conscious male with respirations of 18 breaths/min and reduced tidal volume
• B. A conscious male with respirations of 19 breaths/min and pink skin
• C. An unconscious 52-year-old female with snoring respirations and cool, pale skin
• D. A conscious female with facial cyanosis and rapid, shallow respirations

Answer: (B)

Adequate breathing means the patient is moving enough air with each breath (tidal volume) and doing so at a rate that supports gas exchange, with signs that oxygen is being delivered well (good color and mental status).

The patient who is conscious with a breathing rate around normal (19 breaths/min) and pink skin is the best example. A normal rate plus normal perfusion/oxygenation suggests sufficient ventilation and oxygenation.

The others show issues: breathing at a normal rate but with reduced tidal volume means not enough air per breath, so ventilation is insufficient. An unconscious patient with snoring respirations points to airway obstruction and poor airway protection, with poor perfusion indicated by cool, pale skin. Facial cyanosis with rapid, shallow respirations signals poor oxygenation and inefficient gas exchange, despite the faster rate.

So, the combination of a near-normal rate and pink skin demonstrates adequate ventilation and oxygenation.