Correct Answer: B. Respiratory rate of 32/min
Rationale:
A. Confusion – Significant, but likely secondary:
Confusion is an early neurological sign of hypoxia, sepsis, or metabolic imbalance. However, it is often a symptom rather than the primary physiological problem.
B. Respiratory rate of 32/min – Most concerning:
A respiratory rate this high (tachypnea) suggests acute respiratory distress, hypoxia, or compensatory response to metabolic acidosis. It indicates a potential airway, breathing, or gas exchange emergency, and demands immediate assessment and intervention, such as oxygen support, ABG testing, or advanced airway management. In the ER, Airway-Breathing-Circulation (ABC) takes priority—making this the most critical cue.
C. Restlessness – An early sign of hypoxia:
While restlessness is important, it usually reflects underlying distress, such as hypoxia or pain, and is not as immediately actionable as an elevated respiratory rate.
D. Pulse of 88/min – Normal finding: This pulse rate is within normal limits (60–100 bpm) and is not a concern in this context.