Which current is described as producing a tetanic contraction?

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Prepare for the REMBE Electrotherapy Test. Study with flashcards and multiple choice questions. Each question comes with hints and explanations. Master electrotherapy concepts and get ready for your exam!

Multiple Choice

Which current is described as producing a tetanic contraction?

Explanation:
A tetanic contraction is a sustained, fused muscle contraction that happens when stimulation keeps firing without a pause. In electrotherapy practice, a continuous, direct-like or low-frequency current provides a constant depolarizing stimulus, so the motor units stay activated and the muscle doesn’t relax between impulses. That continuous stimulation creates the fused, tetanic contraction. High-frequency pulsed currents tend to produce rapid, brief contractions that can fatigue quickly and don’t fit the same continuous-use scenario described here. So the continuous, low-frequency current best explains a tetanic contraction.

A tetanic contraction is a sustained, fused muscle contraction that happens when stimulation keeps firing without a pause. In electrotherapy practice, a continuous, direct-like or low-frequency current provides a constant depolarizing stimulus, so the motor units stay activated and the muscle doesn’t relax between impulses. That continuous stimulation creates the fused, tetanic contraction. High-frequency pulsed currents tend to produce rapid, brief contractions that can fatigue quickly and don’t fit the same continuous-use scenario described here. So the continuous, low-frequency current best explains a tetanic contraction.

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