Certified Transport Registered Nurse Certification Practice Exam

What could be an effect of vibration on crew members?

1. Increased focus and attentiveness

2. Decreased muscle control and impaired speech

3. Enhanced coordination and dexterity

4. Decreased fatigue levels

The correct answer is: Decreased muscle control and impaired speech

Vibration can significantly impact crew members by leading to decreased muscle control and impaired speech. This is due to the way sustained exposure to vibration can affect the body's neuromuscular system. Specifically, vibration can lead to disturbances in proprioception—the body's ability to perceive its position in space—which can impair muscle coordination and control. Additionally, the effects of vibration can extend to the nervous system, influencing fine motor skills and cognitive processes, including speech. This impairment can pose safety risks, particularly in roles where precise movements and clear communication are critical. Understanding the physical effects of vibration allows for better preventative strategies, such as ergonomic assessments and scheduled breaks, to mitigate these impacts on crew performance and safety.