A nurse is caring for a client who has received propofol during a colonoscopy. The nurse should monitor for which of the following as an adverse effect of the medication?

The correct answer is A: Decrease in respiratory rate. Propofol is a sedative-hypnotic medication that can cause respiratory depression as a common adverse effect. It works by depressing the central nervous system, leading to a decrease in respiratory rate. Monitoring the client's respiratory rate is crucial to ensure adequate oxygenation.
Incorrect choices:
B: Increase in bowel function - Propofol does not affect bowel function.
C: Decrease in body temperature - Propofol may cause hypotension but not a decrease in body temperature.
D: Increase in heart rate - Propofol typically causes a decrease in heart rate due to its sedative effects, not an increase.