Double-blind study of effects of enkephalinase inhibitor on adverse reactions to myelography.
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Resumo
The side effects in myelography are well known and frequently observed. The most common are headache, nausea, and vomiting. In this study, a rather new compound, Thiorphan, was examined, which displays an antinociceptive activity by inhibiting enkephalinase activity. Forty-two patients received intravenous infusions of Thiorphan before myelography. Another 42 patients were in a control group, and Thiorphan was not administered. In the treated group, postmyelographic headache was found in 24% (versus 52% in the control group). Nausea and vomiting were never seen. Low back pain or sciatica was diminished in 33% of cases. Enkephalin levels in cerebrospinal fluid were measured by a radioreceptor-assay method in both groups without any correlation.