Certified Transport Registered Nurse Certification Practice Exam

What happens to gastrointestinal functionality during ascent in an aircraft?

1. It remains unchanged

2. It becomes hyperactive

3. It may be impaired

4. It improves significantly

The correct answer is: It may be impaired

During ascent in an aircraft, gastrointestinal functionality may be impaired due to several physiological factors that come into play as the body adjusts to changes in altitude. As the aircraft ascends, the decrease in atmospheric pressure can lead to a reduction in the availability of oxygen, which can impact various body systems, including the gastrointestinal (GI) tract. Additionally, the effects of cabin pressure, changes in body fluid distribution, and reduced blood flow to the abdomen can contribute to gastrointestinal discomfort or dysfunction. Passengers may experience symptoms such as bloating, gas, or nausea, which reflect a decline in normal GI activity. This impairment can be particularly pronounced in individuals who are already susceptible to GI issues or those who experience motion sickness. Thus, the correct answer captures the potential for gastrointestinal function to be negatively affected during ascent, highlighting the complex interactions between altitude, pressure changes, and bodily functions.