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Peripheral Nerve Stimulator for monitoring of the depth of neuromuscular blockade


The model "TOF-S" is Peripheral Nerve Stimulator for monitoring of the depth of neuromuscular blockade. Stimulator produces 0.22 millisecond square wave pulses. The maximum output appears to be the most for obese patients.
Two stimulus patterns are generated: Train-of-Four (TOF) and Double Burst Stimulation (DBS). Two control keys allow selection of the pattern of stimulus.
There are two start modes - "Auto" and "Handle". In "Auto" mode the stimulation take place every 10 sec, in the "Handle" - only after the key pressing.
Electrostimulator is used to monitor the depth of neuromuscular blockade during surgery in the postoperative period, in intensive care during medication with miorelaxants.




Electrodes are fixed to the patient in the projection of the ulnar nerve in the distal forearm. Muscle response to the test stimulus is estimated by visual and tactile control over contraction of the finger. Evidence of depth of neuromuscular blockade (NMB) is determined by the number of muscle contractions (responses) and their relative amplitude.
Monitoring of the depth of neuromuscular blockade, both during surgery and in intensive care provides important information needed to determine the optimal time for intubation, the exact dosages for the NMB, the termination of NMB.


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