METHOD FOR DETERMINING NEUROPHYSIOLOGICAL CONDITION OF PELVIC FLOOR MUSCLES Russian patent published in 2019 - IPC A61B5/488 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to coloproctology, and can be used in neurophysiological examination of pelvic floor muscles. That is ensured by stimulation of the pudendal nerve by intra-anal or intravaginal electroneuromyography (EMG) using St. Mark's electrode located in the ischial spine. M-response latency is evaluated right and left. Maximum stimulus force is determined. After the M-response is recorded, the examination is continued without changing the electrode location point. Stimulation is carried out sequentially in two modes: in stimulation mode with single stimuli with increasing power stimulus from submaximal to supramaximal, then in F-wave mode, consisting in rhythmic stimulation with frequency of 1 Hz with supramaximal power of twenty stimuli. Presence or absence of the mixed back-reflex response from the pelvic floor muscles is assessed. If observing the response in the stimulation mode with single stimuli and in the F-wave mode, the preserved innervation along the arc of the reflex response of the pudendal nerve is determined. If there is no response in the stimulation mode by single stimuli and if there is a response in the F-wave mode, the afferent disorder and integrity of the efferent component of the arc of the reflex response of the pudendal nerve is determined. If there is no response in the two mentioned stimulation modes, a total disturbance of the innervation along the arc of the reflex response of the pudendal nerve is determined.

EFFECT: method enables comprehensive assessment of the presence of peripheral neuropathy on afferent sensory and efferent motor ways at the level of the sacral plexus ensured by objective – graphical recording of the mixed back-reflex response from pelvic floor muscles.

1 cl, 19 dwg, 3 ex