NRCME Respiratory Health and Sleep Apnea 3

Question 1

A driver presents with a prescription for zolpidem (Ambien) taken nightly for insomnia. How should the medical examiner proceed?

Accepted Answer

Assess daytime sedation risk and consider underlying sleep disorder evaluation

Answer

Sedative-hypnotics like zolpidem carry next-day impairment risk and may mask an underlying sleep disorder requiring evaluation.

Question 2

What is the primary physiological mechanism causing hypertension in untreated obstructive sleep apnea?

Accepted Answer

Repetitive sympathetic nervous system activation during apneic events

Answer

Repetitive apneic events trigger surges in sympathetic tone, raising catecholamines and causing sustained hypertension even during waking hours.

Question 3

Which of the following scenarios best justifies a 1-year (rather than 2-year) medical certificate for a driver with respiratory disease?

Accepted Answer

Severe COPD with FEV1 60% predicted on stable bronchodilator therapy

Answer

Severe COPD with reduced FEV1 warrants more frequent monitoring; a 1-year certificate allows reassessment of disease stability and treatment response.

Question 4

A truck driver reports he feels refreshed after only 5 hours of sleep and denies excessive daytime sleepiness. His Epworth score is 4. Which statement is most accurate?

Accepted Answer

An ESS below 10 in a high-risk driver still warrants objective sleep testing

Answer

Some drivers with severe OSA subjectively underestimate sleepiness; high anatomic risk factors justify polysomnography regardless of ESS score.

Question 5

Which body measurement is most predictive of OSA risk in the NRCME screening framework?

Accepted Answer

Neck circumference

Answer

Neck circumference ≥17 inches (men) or ≥16 inches (women) is a strong independent predictor of OSA risk used in FMCSA guidance.

NRCME - National Registry of Certified Medical Examiners Practice Test

NRCME - National Registry of Certified Medical Examiners Practice Test

NRCME Respiratory Health and Sleep Apnea 3