Train-of-four ratio, counts and post tetanic counts with the Tetragraph electromyograph in comparison to mechanomyography
Authors' conclusion
These findings, along with prior EMG device evaluations, indicate that real-time EMG neuromuscular monitoring technology to detect muscle action potentials from the adductor pollicis in the clinical setting is closely aligned with the force of thumb contraction determined from MMG.
Study context
- Population
- Patients having elective surgery requiring NMB
- Comparison
- TetraGraph EMG vs validated in-house MMG device
- Outcome
- Agreement of TetraGraph EMG vs MMG
Methodological detailssimultaneous recordings from the same hand muscle
- Simultaneous recordings from the same hand muscle
Main finding
As reported in the abstract
Mean difference (bias) of train-of-four (TOF) ratios between devices, small (685 pairs)
- 2.1%
TOF counts within a count of 2 or less (285 data pairs)
96%
PTC within a count of 2 or less during deep block (215 data pairs)
95%
Original publication
Train-of-four ratio, counts and post tetanic counts with the Tetragraph electromyograph in comparison to mechanomyography. J Clin Monit Comput. Published 18 October 2024. doi:10.
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