title: Electromyography in anaesthesia. A comparison between two methods.
abstract: Two instruments measuring evoked compound muscle action potentials (EMG) produced by train of four stimulation of the ulnar nerve were compared. The neuromuscular transmission section of a Datex Anaesthesia and Brain Monitor (ABM), which utilises an integration technique to measure the EMG, and the Medelec MS6 , by which amplitude of the EMG was recorded and measured were attached to the same electrodes placed over adductor pollicis. Eight patients scheduled for surgery requiring non-depolarising neuromuscular blockade were studied. The changes in neuromuscular transmission measured by the two methods correlated well, with no statistically significant difference in results. The ABM provides a simple and accurate automatic measurement of evoked EMG for use in the study of neuromuscular transmission.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000768:Anesthesia, General; D004576:Electromyography / Q000295:instrumentation; D006801:Humans; D008991:Monitoring, Physiologic / Q000379:methods*; D009132:Muscles / Q000502:physiology; D009469:Neuromuscular Junction / Q000502:physiology; D003473:Neuromuscular Nondepolarizing Agents / Q000494:pharmacology; D009435:Synaptic Transmission / Q000187:drug effects
chemical_list: D003473:Neuromuscular Nondepolarizing Agents