Verity Medical NeuroTrac, Руководство оператора

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NeuroTrac™ TENS Operation Manual
10
RATE [Hz or pulses per second]
The RATE to be selected depends primarily on the electrode placement on the
patient’s body. If one uses contiguous and dermatome (the electrodes alongside
or over the area of pain) electrode placement, a higher rate of 80 Hz –100Hz is
desirable. The patient should experience steady continuous stimulation. It has
been found that an optimal setting of 80 or 90 Hz with a pulse width of 200
µ
S
has good effect for most patients and is a good first choice for pain-gating.
Patients using Trigger, motor or acupuncture points tend to respond to low rate
stimulation 2 Hz-10 Hz and pulse width of 200
µ
S. The desired effect is for the
patient to feel individual pulses.
PULSE WIDTH [Duration]
The wider pulse widths will deliver stronger stimulation for any given
intensity [mA] setting. By using a combination of intensity and pulse
duration, it is felt that various pulse widths are capable of stimulating
different groups of nerve fibres. The wider pulse duration is needed to recruit
motor fibres, where as the narrow pulse duration is used more on the sensory
fibres.
The selection of which pulse duration to use is dependent upon the intended
treatment protocol.
Stimulating the larger nerve fibres is thought to reduce the speed and the
amount at which information is transmitted along the smaller nerve fibres. Also
under certain circumstances the brain is thought to produce its own
analgesic pain-killing substances, known as endorphins or endogenous opiods.
Using the Neurotrac
™
TENS Unit