Certified Transport Registered Nurse Certification Practice Exam

What symptoms may indicate physiologic effects on humans in the 10,000 - 15,000 ft range?

1. Poor judgment

2. Decreased respiratory rate

3. Improved concentration

4. Stable blood pressure

The correct answer is: Poor judgment

Symptoms that may indicate physiologic effects on humans in the 10,000 - 15,000 ft range include poor judgment. As altitude increases, the reduced atmospheric pressure and lower levels of oxygen can impair cognitive functions. This impairment can lead to difficulties in decision-making, memory, and overall judgment, which are critical in high-stress situations, especially for individuals engaged in tasks that require sharp mental acuity. In contrast, a decreased respiratory rate is typically not observed at high altitudes; instead, individuals may experience an increased rate due to the body's attempt to compensate for lower oxygen availability. Improved concentration is also unlikely at high elevations, where cognitive performance is usually hindered. Regarding blood pressure, while it can vary, it is generally not stable at high altitudes due to physiological stressors that can cause fluctuations. Hence, poor judgment serves as a key indicator of the physiologic effects experienced at altitudes between 10,000 and 15,000 feet.