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What is Electromyography (EMG)?
Any place, any case
With TetraGraph EMG technology, you can easily and accurately assess your patients’ depth of paralysis to guide your decisions during any case, regardless of arm position or placement under surgical drapes that may interfere with the anesthesiologist’s access.
TetraGraph EMG vs. AMG
TetraGraph measures the compound muscle action potentials (CMAPs), which are indicative of neuromuscular receptor function; these are reliable physiologic signals that can be measured
EMG is the ONLY technique that does not rely on or require thumb movement. No motion is measured with EMG
TetraGraph can be used in all types of surgeries and any patient position
TetraGraph provides reliable measurements regardless of involuntary patient movements in patients emerging from anesthesia
AMG requires normalization due to reverse fade phenomenom, this is not required with EMG
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.
EMG measures the first signal
EMG is the only technique that measures the compound muscle action potential (CMAP). The muscle action potential is the first signal that can be measured after neuromuscular transmission.
No overestimated recovery
It has been demonstrated in clinical publications that other techniques, such as KMG and AMG tend to overestimate the degree of neuromuscular recovery compared to electromyography (EMG).
Arm can be tucked
EMG techniques can be used independently of the hand position and does not require free movement of the thumb.
EMG tells the story
Neuromuscular Transmission Stages and Related Neuromuscular Transmission Technologies
- Tactile measurement
- MMG measurement
- AMG measurement
- KMG measurement
- CMG measurement