Læknablaðið : fylgirit - 01.05.1978, Blaðsíða 133

FIG. 2
FREKVENS = 70 KHz
IMPULSVARIGHED = 100 MIKROSEKUNDER
GENTAGELSESFREKVENSEN 100 Hz
AMPLITUDE>6 MAMP. (VARIATION 8-í)5).
SPÆHDINGSFORSKEL KONSTAHT 9 VOLT.
in the bax. Two days later the procedure was
repeated with the two groups reversed.
The stimulation was given for 60 minutes on
the right vvrist through a 12 cm^ copper folio
electrode in high frequency current with rectan-
gular electrical impulse. Further technical
specifications are provided on fig. 2. (Frequency
70 KHZ. , impulse duration = 100 microseconds,
repetition rate = 100 hertz. Amplitude > 6 mamp.,
(variation 8-45) the voltage being kept constant
at 9 volts). The patients were placed in a
horizontal position with the generator in a box
next to them.
Pain was measured a.m. Huskisson with a
non-parametric scale, before and after stimula-
tion/placebo for right as well for left wrist,
eight measurements in all. For both hands
were in the same way measured coordinating
ability on Perdue Pegboard, grip strength with
a mercury manometer, and supination strength
with a mechanical set-up. All the parameters
were measured for both hands so that the
unstimulated left hand couid be used as a control
with regard to possible changes due to time,
morning stiffness, previous medicine intake,
room temperature and athmospheric pressure.
Immediately upon completion of the investiga-
tion the code was opened the impulse generators
were tested and found in order.
The patients' medicamental treatment was
unchanged from two weeks before the trial to the
end.
R es ults:
(Fig. 3). A signifieant statistical correlation
was found between pain relief as registered a.m.
Huskisson and electrostimulation P<0,05 on
Pratts rangsum-test.
No significant change in coordination, grip strength
or supination strength could be shown. No side-
effects or reverse effects were seen.
Conclusion:
Transcutaneous nerve stimulation has been used
for pain relief for many years in physical medicine,
and since the introduction of Gate control theory
in 1965, there has been an increased interest in
it. The apparatus we used gave an electric
current that could not be felt. In the chosen
group of patients characterized by chronic pain,
we found significant pain relief after TNS., but
no change in the other chosen parameters.
SMERTELINDRING (REG. a.m. HUSKINSS0N): STATISTISK SIGNIFIKANT (p<0,05)
K00RDINATI0N: H0N SIGNIFIKANT
GRIBESTYRKE: N0N SIGNIFIKANT
SUPINATIOHSSTYRKE: N0N SIGHIFIKANT
131