Electromyography and clinical neurophysiology
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Electromyogr Clin Neurophysiol · Jun 2005
The effect of carpal tunnel release on median nerve flattening and nerve conduction.
Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy and extensive surveys have been given on the time course of electrophysiological findings pre- and postoperatively. In patients with clinical and electrophysiological confirmed diagnosis of CTS surgical decompression of the carpal tunnel is a first line treatment and has proven to be successfull in 70 to 90% of all cases. The objective of this work was to study the morphological changes of the median nerve after endoscopic release of the carpal tunnel. ⋯ There was significant normalization of the calculated flattening ratio of the median nerve already 2 weeks after surgical release, whereas nerve conduction studies needed a longer period of time to normalize and thus were still abnormal 3 months postoperatively. We conclude that ultrasound is a simple and excellent objective method for visualizing the morphological recovery of the median nerve very early after decompression surgery. In complex cases with unsatisfactory outcome ultrasonography may prove useful in confirming successfull or failed decompression of the median nerve.
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Electromyogr Clin Neurophysiol · Mar 2005
Case ReportsUlnar neuropathy at Guyon's canal: electrophysiological and surgical findings.
Published correlations between electrophysiological and surgical findings are relatively rare in cases of ulnar nerve compression at the wrist, compared to the more common compression of the ulnar nerve at the elbow. We describe a patient who presented with clinical and electrodiagnostic findings of a pure motor ulnar neuropathy involving the territory of the deep branch. Surgical exploration revealed that a ganglion cyst caused compression of the deep ulnar motor branch at Guyon's canal. This case illustrates the usefulness of electrodiagnostic studies in the localization of nerve entrapment prior to surgery.
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Electromyogr Clin Neurophysiol · Sep 2004
Case ReportsUnilateral diaphragmatic paralysis following thoracic outlet surgery: a case report.
In this report, a young female, who initially presented with left upper extremity pain, eventually underwent surgery for presumed thoracic outlet syndrome. Following surgery, she developed shortness of breath. Diagnostic studies revealed an elevated left hemidiaphragm secondary to injury to the phrenic nerve.
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Electromyogr Clin Neurophysiol · Jun 2004
Brachial plexopathy: a clinical and electrophysiological study.
A retrospective study to evaluate the clinical and electrophysiological profile of brachial plexus lesions in a tertiary care center of India. ⋯ Recovery in the traumatic group correlated well with the electrophysiological abnormalities while no such correlation was evident in the idiopathic group.
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Electromyogr Clin Neurophysiol · Jan 2004
Randomized Controlled Trial Clinical TrialThe effect of transcutaneous electrical nerve stimulation on sympathetic skin response.
The aim of present study was to determine whether combination of transcutaneous electrical nerve stimulation (TENS) and acupuncture inhibits sympathetic nerve activity in healthy humans. Multiunit efferent postganglionic sympathetic activity was recorded with Toennies set. In this study, the aim was to obtain latency, amplitude and duration of sympathetic skin response (SSR) and skin temperature (ST) from both hands in 15 healthy subjects. ⋯ TENS applied at AG and NSG caused a significant increase in ST (P = 0.001), significant increase in latency of SSR (P = 0.001), significant decrease in amplitude of SSR (P = 0.001) and no significant changes were observed in duration of SSR (P > 0.05). Then statistical analysis showed differences between both of groups (AG & NSG) for ST and SSR post--TENS. Transcutaneous electrical nerve stimulation inhibits sympathetic nerve activity in healthy humans.