Is the Stimpod immune to cauterization?

No. In order for Stimpod to receive its certification, it has to pass certain tests to prove its immunity to electromagnetic interference (EMI) and electrostatic discharge (ESD). All versions of Stimpod have passed these criteria. The latest version of Stimpod has proven its immunity to cauterization in the OR under general conditions, however, extreme intensities…

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Why does the Stimpod display “No Accel”?

The Stimpod is in ‘TWI’ mode. In this mode, the device does not communicate with the accelerometer. The Stimpod is in ‘TET’ mode. In this mode, the device does not communicate with the accelerometer. There could be a momentary interference that interrupted communication between the accelerometer and Stimpod. There could be a problem with the…

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Are normalization algorithms reliable?

TOF-Watch and TOF-Watch S will calculate and display T2/T4 and if this value exceeds 100% it would simply limit the display to 100%. TOF-Watch SX has a well-implemented normalization procedure but it takes 20 minutes to perform. Xavant is currently researching a practical way for implementing a normalization algorithm. Claudius, C., Viby-Mogensen, J., 2008. ‘Acceleromyography…

Why does the Stimpod NMS450 not require a preload device?

In an attempt to increase the reliability of the TOF-Watch accelerometer a preload device was introduced. According to Claudius, Viby-Mogensen (2008), there is insufficient evidence to confirm or deny that the application of a preload will increase the precision of acceleromyography. The preload device attempts to restrict the movement of the thumb to one dimension.…

Will a TOF ratio of greater than 90% reliably exclude Postoperative Residual Curarization?

It remains unclear as to what acceleromyography TOF ratio is necessary to exclude clinically significant PORC. Glenn et al. found that postoperative residual curarization is reduced in patients monitored with acceleromyography TOF ratio greater than 90%. Claudius, C., Viby-Mogensen, J., 2008. ‘Acceleromyography for Use in Scientific and Clinical Practice – A Systematic Review of the Evidence’.…

Why do we see TOF ratios greater than 100%?

When monitoring Train of Four prior and post NMBA administration, ratios of more 100% are often noticed and might go as high as 147%. The effect is ascribed to the mobilization of presynaptic acetylcholine in the Neuromuscular Junction (NMJ) after T1 promoting release in synaptic cleft during subsequent stimulations. Both the Stimpod NMS450X and TOF-Watch…