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?

A. Decrease in body temperature can occur with propofol, but it is not the most critical adverse effect to monitor immediately after administration. Hypothermia is a concern but less urgent compared to respiratory depression. B. Increase in bowel function is not associated with propofol. Propofol does not typically affect bowel function. C. Increase in heart rate can occur but is not a primary adverse effect of concern with propofol. Tachycardia may be monitored but is not as critical as respiratory effects. D. Decrease in respiratory rate is a significant adverse effect of propofol. Propofol can cause respiratory depression, leading to hypoventilation or apnea. Monitoring respiratory rate and ensuring adequate ventilation is crucial after propofol administration.