PTA Physical Therapy Assistant

Answer: A - > 100 pps is the pulse frequency of brief - intense TENS.

Brief - intense TENS is the noxious level of stimulation. It stimulates the C fibers. It is delivered at high pulse frequency with long pulse duration of 300 - 1000 msec.
High frequency TENS is delivered at a pulse frequency of 60 - 100 pps and short pulse duration of < 100 msec.
Low frequency TENS is delivered at a pulse frequency of 2 - 4 pps and long pulse duration of 150 - 250 msec.