Objective: To observe the effect of slow-released morphine tablets by rectum in treating the patients of moderate to severe cancer pain with server nausea and vomiting or dysphagia. Methods: 54 cases of cancer patients with server nau- sea and vomiting symptoms or dysphagia were treated with slow-released morphine tablets by rectum, 30-90 mg/time, once every 12 hours. The drug dose was titrated by degree of pain, and the effects and adverse effects were observed. Results: The total effective rate was 81.48%, complete response rate was 51.85% (28/54), and the partial response rate was 29.63% (16/54); there were no obvious toxicities, and the common adverse symptoms included nausea (16.7%) and vomiting (9.3%). Conclusion: The treatment of slow-released morphine tablet by rectum could effectively control cancer pain, the adverse effects were slight than that by mouth. It is safe and effective to be worthy of the adhibition in clinic.
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