Pethidine is pharmacologically different from morphine because it: (A) Causes more sedation, (B) Causes more constipation, (C) Has additional Anticholinergic action, (D) Causes spasm of sphincter of Oddi
Answer is C. Uses of opioids IV morphine Myocardial infarction, Acute pulmonary edema Codeine, Pholcodeine, Dextromethorphan, Noscapine Cough suppressants Loperamide, Diphenoxylate Noninfective diarrhea Morphine Pre-anesthetic medication Pethidine Reduces shivering after anesthesia ( a2 receptor action) Methadone Neuropathic / Cancer pain Methadone Opioid abuse & Opioid rotation treatment (Refer: K. D. Tripathi&;s Essentials of Medical Pharmacology, 7th edition, pg no: 475)