EFFECT OF KETAMINE ON TRANSMISSION IN SYMPATHETIC GANGLIA

Abstract
The effect of ketamine on sympathetic ganglion transmission has been studied using the guineapig isolated hypogastric nerve-vas deferens preparation. Ketamine produced a dose-dependent depression in the response to preganglionic stimulation (IC50, 2.05 × 10−4 mol litre−1). No change in the response to postganglionic stimulation was recorded. The anti-cholinergic activity of ketarnine was confirmed using the frog isolated rectus abdominis.