A patient undergoing treatment with symmetrical biphasic pulsed current for knee extension reports discomfort. To improve comfort while maintaining efficacy, what should the therapist consider adjusting?

Adjusting the pulse duration can significantly enhance patient comfort during treatment with symmetrical biphasic pulsed current while still ensuring the modality remains effective. Pulse duration refers to the length of time each pulse lasts; when this duration is modified, it can influence both the perception of discomfort and the physiological response to the stimulation.

Decreasing the pulse duration can often result in a reduction in the overall sensation of discomfort, as shorter pulses can be less painful while still providing effective stimulation of the underlying tissue. This adjustment allows for a more tolerable experience for the patient without undermining the therapeutic benefits of the electrical stimulation.

Other factors, such as pulse rate, current intensity, and current polarity, may also influence comfort and efficacy, but adjusting pulse duration specifically targets the sensory experience in a way that is often directly linked to the discomfort level reported by the patient.