Questions: A nurse is teaching a group of newly licensed nurses about vital sign measurements. Which of the following factors should the nurse include in the teaching? Anxiety can cause a decrease in respiratory rate. Body temperature is typically lower in older adults. Caffeine can cause a temporary decrease in pulse rate in adolescents. Blood pressure slightly decreases immediately following the use of nicotine.

The answer is the second one: Body temperature is typically lower in older adults.

Explanation for each option:

1. Anxiety can cause a decrease in respiratory rate.
   This statement is incorrect. Anxiety typically causes an increase in respiratory rate due to the body's fight-or-flight response, which prepares the body to react to stress.

2. Body temperature is typically lower in older adults.
   This statement is correct. As people age, their metabolic rate tends to decrease, which can lead to a lower baseline body temperature compared to younger individuals.

3. Caffeine can cause a temporary decrease in pulse rate in adolescents.
   This statement is incorrect. Caffeine is a stimulant and generally causes an increase in pulse rate, not a decrease, as it stimulates the central nervous system.

4. Blood pressure slightly decreases immediately following the use of nicotine.
   This statement is incorrect. Nicotine typically causes an increase in blood pressure because it stimulates the release of adrenaline, which increases heart rate and constricts blood vessels.

In summary, the correct factor to include in the teaching is that body temperature is typically lower in older adults.