EA Treatment with Different Waveform for Subacute BP:study Protocol for a Randomized Controlled Trial

Change from Baseline score of the Sunnybrook grading(SFGS) scale

The Sunnybrook grading scale includes 3 subscales, which are the resting symmetry subscale, the symmetry of voluntary movement subscale, and the synkinesis subscale. In the resting symmetry subscale, the minimal score is 0, which indicates normal resting symmetry, and the maximal score is 20, which indicates the most severe resting asymmetry. In the symmetry of voluntary movement subscale, the minimal score is 20, which indicates gross asymmetry of voluntary movement, and the maximal score is 100, which indicates normal symmetry of voluntary movement. And in the synkinesis subscale, the minimal score is 0, which indicates no involuntary muscle contraction associated with each expression, and the maximal score is 15, which indicates the most severe involuntary muscle contraction associated with each expression. The composite score equals to the symmetry of voluntary movement score minus the resting symmetry score and the synkinesis score.

Time frame: Baseline,4 weeks

Change from Baseline score of the Facial Disability Index(FDI)

The FDI is a brief, self-report questionnaire of physical disability and psychosocial factors related to facial neuromuscular function. It was intended to assess disability and the outcome of intervention in terms of meaningful change in the patient's physical disability and psychosocial status.

Time frame: Baseline,4 weeks

Change from Baseline value of the amplitude ratio of the compound muscle action potential (CMAP) of the affected side in the ENoG test.

Change from Baseline value of the amplitude ratio of the compound muscle action potential (CMAP) of the affected side in the ENoG test.