Which description matches the sensory mode of TENS for acute pain?

Which description matches the sensory mode of TENS for acute pain?

• A. High beat frequency (80-200 pps) with sensory-only buzzing/tingling.
• B. Low beat frequency (1-5 pps) with muscle contraction.
• C. Variable beat frequency with burning sensation.
• D. No current; placebo.

Answer: (A)

TENS analgesia works by stimulating sensory nerves to dampen pain signals, using the gate control mechanism to reduce the perception of pain. For acute pain, the most effective approach is a high-frequency, sensory-level stimulation that produces a comfortable buzzing or tingling without triggering muscle contraction. This engages the large-diameter A-beta fibers and quickly modulates pain transmission at the spinal level, giving fast relief without causing muscle responses or fatigue. The description of a high beat frequency in the range of tens to hundreds of pulses per second with sensory-only sensation fits this mode precisely. In contrast, low-frequency stimulation tends to cause muscle contractions, which is a different mode and less suitable for acute pain. A variable frequency that evokes a burning sensation isn’t the typical sensory-mode description, and a no-current placebo isn’t providing actual analgesia.

TENS analgesia works by stimulating sensory nerves to dampen pain signals, using the gate control mechanism to reduce the perception of pain. For acute pain, the most effective approach is a high-frequency, sensory-level stimulation that produces a comfortable buzzing or tingling without triggering muscle contraction. This engages the large-diameter A-beta fibers and quickly modulates pain transmission at the spinal level, giving fast relief without causing muscle responses or fatigue. The description of a high beat frequency in the range of tens to hundreds of pulses per second with sensory-only sensation fits this mode precisely. In contrast, low-frequency stimulation tends to cause muscle contractions, which is a different mode and less suitable for acute pain. A variable frequency that evokes a burning sensation isn’t the typical sensory-mode description, and a no-current placebo isn’t providing actual analgesia.