title: [Value of evoked sacral potentials in studying bladder sphincter disorders in peripheral neuropathies and central nervous system diseases. A study of 110 cases].
abstract: The sacral spinal cord is one of the main sites of integration of bladder and anal sphincter and sexual function. Clinical tests (bulbocavernous reflex, perineal reflexes) are often inadequate and urodynamic investigations (cystomanometry, urecholine test, Susset's test) are sometimes unhelpful. The integrity of this structure is essential for normal sphincter function and disease at this level (or of its afferent or efferent limbs) produces a peripheral type of disorder. Sacral evoked potentials are an electrophysiological means of testing the bulbocavernous reflex by external stimulation of the dorsal nerve of the penis or clitoris and recording by a needle bipolar electrode in the striated muscle of the sphincter or the bulbocavernous muscle. An objective study of the sacral reflex are (S2, S3, S4) can thus be performed. One hundred and ten patients have undergone this investigation. Normal latency established in a series of 26 healthy volunteers was less than 42.1 ms. Prolongation of this interval is a sign of disease of the reflex are and correlated with urinary or sexual problems in 46 cases of clinical or electrical peripheral neuropathy. The reflex time was normal in all patients with CNS disease (32 cases) and an impotence of psychological origin (6 cases).
mesh_terms: D000328:Adult; D000368:Aged; D000437:Alcoholism / Q000150:complications; D002493:Central Nervous System Diseases / Q000150:complications / Q000175:diagnosis*; D007172:Erectile Dysfunction / Q000209:etiology; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010523:Peripheral Nervous System Diseases / Q000150:complications / Q000175:diagnosis*; D012021:Reflex, Abnormal / Q000175:diagnosis; D012445:Sacrococcygeal Region; D012735:Sexual Dysfunction, Physiological / Q000209:etiology* / Q000503:physiopathology; D013116:Spinal Cord / Q000503:physiopathology*; D014555:Urination Disorders / Q000209:etiology* / Q000503:physiopathology
vernacular_title: Intérêt des potentiels évoqués sacrés dans l'étude des troubles vésico-sphinctériens des neuropathies périphériques et des affections du système nerveux central. Etude de 110 cas.