Comparison of the results of sensor and nervous – muscular agitation of the median nerve odtained throught the use of the i/t curve
Keywords:
i/t curve, electrodiagnosis, parameters, healthy muscles, median nerveAbstract
Introduction. I/t curve is an accessible method of electrodiagnosis that allows determinate lesion degree of a peripheral nerve. The method utilizes triangularly and rectangularly shaped direct current impulses. Impulse length can vary from 1000 ms to 0,05 ms. The aim of this article is to compare the proper values of parameters of sensor and nervous – muscular agitation of the median nerve odtained throught the use of the i/t curve.
Source. The study group included 102 persons: 70 females and 32 males (average 23 years), clinically examined and no disorders were found in the function of the median nerve.
Results. There are existing differences in the value current intensity of the i/t curve of rectangular and triangular impulse between sensor and nervous – muscular agitation of the median nerve. Differences are present in the values of coefficient and accommodation quotient, rheobase, threshold value of accommodation. The chart for the triangular impulse (where impulse last from 1 – 0,05 ms) for sensor agitation shows a steeper curve in comparison to the curve of nervous – muscular agitation.
Conclusion. Knowledge of methods of execution and how to interpret the i/t curve can be helpful for physiotherapist to understand and evaluate the results obtained using more accurate tests such as electroneurography. I/t curve is available method, to confirm the fact that peripheral nerve is damaged and monitor the process of healing and rehabilitation
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