Search results for " Nerve"
showing 10 items of 885 documents
Latency and amplitude variability in serial median nerve SEP recordings
1999
Abstract Objectives : Intra-individual variability of SEP parameters was investigated by serial SEP recordings. Methods : Median nerve SEP of 53 normal subjects (mean age 25.5±2.7 years) were evaluated. Recordings were repeated 1 week, 2 weeks, and 6 months after the initial recording. Results : Mean values of latencies from right median nerve stimulation were slightly longer (+0.1 ms) as compared to the left. The intra-individual (within stimulation side) variance did not depend on the time interval between recordings. The total within-stimulation-side variance of latencies was 0.056 ms 2 for N20 (C 3/4 ′ vs. F z ), 0.070 ms 2 for N13 (C 7 vs. F z ), 0.048 ms 2 for N10 (Erb's point vs. F z…
Cerebral and spinal MR-findings in patients with postrepair myelomeningocele
1990
In 114 patients with postrepair myelomeningocele MRI of the spine was performed. Tethered cord (89%) and associated malformations (syrinx, lipoma etc.) (33%) were the most important findings. Additional MRI scans of the head (44 patients) revealed numerous further anomalies. Arnold Chiari malformation was found in 76% of the patients (ACM I: 32%, ACM II: 44%). In the ACM II group compression of lower cranial nerves, brain stem, and cerebellum can lead to considerable neurologic symptoms. Therefore in patients with progressive neurologic dysfunction a complete investigation of the whole spine and brain is necessary. MRI proves to be the diagnostic procedure of choice in patients with dysraph…
Surgical Neuropelveology: Lateral Femoral Cutaneous Nerve Endometriosis. Laparoscopic Resection and Nerve Transplantation
2021
ABSTRACT Study Objective To demonstrate the application of surgical neuroanatomic principles for the diagnosis and treatment of deep infiltrating endometriosis involving the lateral femoral cutaneous nerve. Design Video demonstration of laparoscopic lateral femoral cutaneous endometriosis resection with nerve transplant. Setting Endometriosis infiltrating somatic nerves is a poorly known condition, which can cause severe neuropathic symptoms [1] and is often unrecognized with a subsequent treatment delay [1] . Intimate knowledge of pelvic neuroanatomy and expertise in minimally invasive surgery are essential to manage this challenging surgical scenario 2 , 3 , 4 . Interventions Thirty-six y…
Isolated infiltrative endometriosis of the sciatic nerve: a report of three patients.
2007
Objective: To report that isolated endometriosis of the sciatic nerve without further manifestation of endometriosis does exist. Design: We describe our technique of laparoscopic neurolysis of the sciatic nerve and the sacral plexus. Setting: Department of Gynecology and Obstetrics, St. Elisabeth Hospital, affiliated with the University of Cologne, Cologne, Germany. Patient(s): Three female patients with isolated endometriotic infiltration of the endopelvic portion of the sciatic nerve. Intervention(s): Elective laparoscopic neurolysis of the sciatic nerve with removal of endometriosis. Main Outcome Measure(s): Disparition of pain in the patients and histologic information of the endometrio…
Facial disability index (FDI): adaptation to Spanish, reliability and validity.
2011
Objectives: To adapt to Spanish the facial disability index (FDI) described by VanSwearingen and Brach in 1995 and to assess its reliability and validity in patients with facial nerve paresis after parotidectomy. Study Design: The present study was conducted in two different stages: a) cross-cultural adaptation of the questionnaire and b) cross-sectional study of a control group of 79 Spanish-speaking patients who suffered facial paresis after superficial parotidectomy with facial nerve preservation. The cross-cultural adaptation process comprised the following stages: (I) initial translation, (II) synthesis of the translated document, (III) retro-translation, (IV) review by a board of expe…
Effects of contralateral white noise stimulation on transitory evoked otoacoustic emissions in patients with acoustic neuroma.
1995
Abstract Transitory evoked otoacoustic emissions are normal phenomena observed in most persons with hearing levels greater than 35 dB. Further, masking of the contralateral ear produces amplitude reductions in the transitory evoked otoacoustic emissions. We have undertaken a study of transitory evoked otoacoustic emissions in 20 patients with acoustic neuroma. All patients were assessed for transitory evoked otoacoustic emissions bilaterally, with and without contralateral masking with white band noise at 40, 50, and 60 dB. We found that transitory evoked otoacoustic emissions were present in 30% of ears with tumor and that the presence of transitory evoked otoacoustic emissions is associat…
Myasthenia gravis associated with Charcot-Marie-Tooth neuropathy: report of a case
1992
We report the case of a 24 year old woman who developed myasthenia gravis in the course of a mild form of Charcot-Marie-Tooth neuropathy. We describe the clinical manifestations together with the neurophysiological, pathological, serological findings and response to therapy and discuss the unusual association in the light of the relevant literature. © 1992 Masson Italia Periodici S.r.l.
Impaired refractory periods of peripheral sensory nerves in multiple sclerosis.
1978
Maximum conduction velocity and relative refractory period (RRP) of median nerve sensory fibers were studied in 36 patients diagnosed as having multiple sclerosis (MS) and in 31 controls. Maximum conduction velocity did not differ in the two groups, but the RRP was significantly prolonged in MS patients. Increased RRP is observed mainly when peripheral nerve myelin is abnormal or damaged. Our findings support the assumption that peripheral nerve myelinated fibers are usually involved in MS.
Influence of nerve branch of origin and extracanalicular extension of the tumor on hearing after middle fossa removal of vestibular schwannoma
2007
Neither nerve branch of origin nor extracanalicular (up to 1 cm) extension of a vestibular schwannoma (VS) influence the postoperative hearing outcome in patients operated via a middle cranial fossa (MCF) approach.To test whether the nerve branch of tumor origin and an extracanalicular, up to 1 cm, tumor extension influences hearing outcome after MCF VS surgery.This was a retrospective case review of 50 patients with postoperative pure-tone audiogram (PTA) performed later than 90 days after surgery. Twenty patients had a superior vestibular nerve (SVN) tumor and 27 patients had an inferior vestibular nerve (IVN) tumor. In three patients the nerve branch of origin of the VS could not be uneq…
Laparoscopic Neuronavigation for Deep Lateral Pelvic Endometriosis: Clinical and Surgical Implications
2018
Abstract Study Objective To evaluate the clinical presentation and surgical outcome in patients with deep lateral pelvic endometriosis (dLPE). Design A retrospective multicentric study (Canadian Task Force classification II-2). Setting University tertiary referral centers. Patients One hundred forty-eight women with deep infiltrating endometriosis (DIE). Interventions Laparoscopic excision of DIE. Disease distribution was classified as follows: central pelvic endometriosis (CPE) when DIE involved 1 of the following anatomic sites: cervix, vagina, uterosacral ligaments, rectum, bladder, or pelvic peritoneum; superficial lateral pelvic endometriosis when parametria, ureters, or hypogastric pl…