Analgesic effects of ketamine administered in subdissociative doses

Abstract

MATERIALS AND METHODS A. Electrical Ear Algesimetry in Volun-teers.-Pain threshold was measured by electrical ear algesimetry4 in six volunteers following the intramuscular administration of 0.5 mg./kg. of meperidine, 1 mg./kg. of meperidine, and inactive placebo …