METHOD FOR PREDICTING THE OUTCOME OF CONSERVATIVE TREATMENT OF PATIENTS WITH ISOLATED IMPAIRMENT OF THE MAJOR MANDIRAL BRANCH OF THE FACIAL NERVE Russian patent published in 2023 - IPC A61B5/262 A61B5/395 A61B5/388 A61B17/24 A61H23/06 

FIELD: medicine; neurology; functional diagnostics; rehabilitation; surgery.

SUBSTANCE: clinical examination of the patient is carried out with an assessment of the function of the muscle that lowers the lower lip (MONG) and the mental muscle (PM). Electroneuromyography (ENMG) is performed to exclude the involvement in the pathological process of other branches of the LN, in addition to the CNV LN. Needle myography (IMG) of the lower lip depressor muscle (MONG), mentalis muscle (PM) and orbicular muscle of the mouth is performed to confirm the involvement of MONG and PM and isolation of the CNV FN. In this case, IMG is carried out using two registration channels. Active monopolar needle electrodes are alternately injected into the muscles under the study symmetrically from the affected and healthy sides of the face, and one monopolar electrode is installed subdermally along the lower surface of the mental symphysis so that there is a minimum number of muscles around the recording surface. Then, in the process of the patient performing the test in the form of an arbitrary contraction of the corresponding facial muscles, the value of the maximum amplitude of the interference pattern (IP) is recorded for each of the studied muscles from the affected and healthy sides of the face. The magnitude of the decrease in the maximum amplitude of the IP of the affected side relative to the healthy side is determined. When detecting a decrease in the amplitude of IP by 15% or more for MONH and PM and a decrease in the amplitude of IP up to 15% for the orbicular muscle of the mouth, a conclusion is made about an isolated lesion of the CNV of the FN. In the case of a decrease in the amplitude of the PI of the affected side with IMG MONH by 90% or more compared to the healthy side, a high risk of an unfavorable outcome of conservative treatment is predicted. Up to 90% means a favorable outcome of conservative treatment is predicted.

EFFECT: method helps to obtain objective and accurate assessments, allowing to choose the optimal tactics for treating patients with isolated lesions of the marginal mandibular branch (CNV) of the facial nerve (FN), takes little time, is easy to perform, does not require special training of doctors of relevant specialties.

1 cl, 41 dwg, 2 tbl, 6 ex