A respiratory rate of 11 breaths per minute with no identifiable cause should trigger which action?

• A. Contact flight surgeon
• B. Monitor and recheck
• C. Provide oxygen
• D. Immediate hospitalization

Answer: (A)

Unexplained bradypnea in aircrew should be escalated to a flight surgeon. A respiratory rate of 11 breaths per minute is below normal, and without an identifiable cause it can signal something that could affect both the airway/ventilation and flight safety. The flight surgeon can quickly assess for potential hidden causes (drug effects, CNS or metabolic issues), review the crew member’s baseline and current status, and decide whether they are fit for duty, require ground or further evaluation, or need immediate intervention.

Monitoring and rechecking alone isn’t sufficient when no cause is identified, since it delays essential medical triage. Providing oxygen isn’t indicated purely for a low rate unless there’s evidence of hypoxemia or distress. Immediate hospitalization is reserved for unstable or clearly concerning cases; in a stable aircrew member with a just-found abnormal rate and no symptoms, consulting the flight surgeon is the appropriate next step to ensure proper safety and care.