38. Which of the following is Wrong?
(A) Opioids activate central μ opioid receptor which causing decreased peristalsis, decreased
intestinal secretions, and increased sphincter tone.
(B) Pain act as a physiologic antagonist to respiratory depression.
(C) Up to two-thirds of patients experience nausea or vomiting during initiation of opioid therapy.
(D) Antihistamines, opioid antagonists, propofol and ondansetron have been used for the treatment
of pruritus.