EMG – The new Gold Standard in NMT monitoring
Like other technologies, EMG involves stimulation of a peripheral nerve and measurement of the response that is generated by the contraction of the innervated muscle. The difference from other technologies is that EMG measures an electrical event that occurs at the neuromuscular junction; the activation of postsynaptic receptors by acetylcholine (a chemical process) that converts it to a mechanical response (excitation- contraction coupling), that results in muscle contraction. Because measurement of function does not depend on physical movement (as MMG, AMG or KMG require), EMG is a better indicator of pure neuromuscular function- EMG is the new gold standard.
Neuromuscular Transmission Stages and related Neuromuscular Transmission Technologies
Neuromuscular Transmisson (NMT) is the transfer of an impulse between a nerve and a muscle in the neuromuscular junction. EMG measures the compound action potential, which is the first signal we are able to measure after neuromuscular transmission. Therefore, EMG is most specifically suited to monitor the effect of muscle relaxants without any mechanic interferences.
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