Somatosensory evoked potential

Dogui M, Mrizak N, Yacoubi M, et al. 1991. Trigeminal somatosensory evoked potentials in workers handling trichloroethylene. Neurophysiol Clin 21 95-103. 

Ewert T, Beginn U, Winneke G, et al. 1986. [Sensory nerve conduction and visual and somatosensory evoked potential in children exposed to lead.] Nervenarzt 57 465-471. (German)... 

Araki, S, Murata, K, Aono, H. (1987). Central and peripheral nervous system dysfunction in workers exposed to lead, zinc and cooper. A follow-up study of visual and somatosensory evoked potentials. Int. Arch. Occup. Environ. Health, 59, 177-87. 

Mutti A, Ferri F, Lommi G, et al. 1982b. -Hexane-induced changes in nerve conduction velocities and somatosensory evoked potentials. Int Arch Occup Environ Health 51( l) 45-54. 

Desflurane reduces cerebral metabolic rate for oxygen (CMR02) to a similar extent as isoflurane. Cerebral vascular resistance is reduced and is accompanied by an increase in cerebral blood flow (0.5-2.0 MAC). It suppresses EEC activity and there is no evidence of epileptiform activity. Somatosensory evoked potentials are preserved at clinical concentrations. 

Bordi F., Pietra C., Ziviani L., and Reggiani A. (1997). The glycine antagonist GV150526 protects somatosensory evoked potentials and reduces the infarct area in the MCAo model of focal ischemia in the rat. Exp. Neurol. 145 425 133. 

Branston NM, Ladds A, Symon L, Wang AD (1984) Comparison of the effects of ischaemia on early components of the somatosensory evoked potential in brainstem, thalamus, and cerebral cortex. J Cereb Blood Flow Metab 4 68-81... 

Schuler OG, Eriskat J, Baethmann AJ, Back T (2001a) Thrombolysis induces a reperfusion-dependent inhibition of peri-infarct depolarizations in experimental thromboembolic stroke. J Cereb Blood Flow Metab 21 S396 Schuler OG, Plesnila N, Otto D, Baethmann AJ, Back T (2001b) Early thrombolysis inhibits periinfarct depolarizations in embolic MCA occlusion. NeuroReport 12 3943-3946 Schwindt W, Burke M, Pillekamp F, Luhmann HJ, Hoehn M (2004) Functional magnetic resonance imaging and somatosensory evoked potentials in rats with a neonatally induced freeze lesion of the somatosensory cortex. J Cereb Blood FlowMetab 24 1409-1418... 

Lo and Steinberg, 1992 New Zealand White rabbits Anterior and MCAo, ICAo Permanent 37, 33, 30 4 h intraischemia Somatosensory evoked potentials, regional blood flow, MRI at 4 h... 

Nishio et al., 2002 Cats MCAo 1 h, with reperfusion 30.5 and 36.5, intraischemia plus 3 h, with slow or rapid rewarming Somatosensory evoked potentials (SEPs), edema at 5 h reperfusion Edema reduced in hypothermia with slow re warming, recovery of SEPs enhanced with slow rewarming... 

Formal neurobehavioral evaluation of both children at age 3 years 10 months generated the results summarized in Table 7-1. Further testing of Elizabeth showed profound hypotonia (decreased muscle tone), electrophysiologi-cal evidence of peripheral neuropathy, normal somatosensory evoked potentials, and a normal electroencephalogram recorded during sleep. 

In the presence of high lithium concentrations (2.6 and 1.6 mmol/l), two patients had high amplitude of the primary complex in median nerve somatosensory evoked potentials, which normalized as concentrations fell (549). 

Yen, C.-L., Liaw, Yi-F. Somatosensory evoked potentials and number connection test in the detection of subchnical hepatic encephalopathy. Hepato-Gastroenterol. 1990 37 332-334... 

The effect of hemodilution with colloids on somatosen-sory-evoked potentials in non-premedicated volunteers has been reported (9). In seven subjects, blood (20 ml/kg within 30 minutes) was removed and simultaneously replaced by gelatine 3% or etherified starches 6%. After 30 minutes, blood was retransfused. Median and posterior tibial nerve somatosensory-evoked potentials were recorded from the cortex, second cervical vertebra, Erb s point, and first lumbar vertebra. Hemodilution with gelatine or etherified starches or retransfusion did not affect somatosensory-evoked potentials, provided normovolemic conditions were maintained. 

Detsch O, Muhling J, Bachmann-Mennenga B, Thiel A, Heesen M, Hempelmann G. Volume replacement with gelatin or hydroxyethylstarch solutions does not impair somatosensory evoked potential monitoring a haemodilu-tion study in conscious volunteers. Eur J Anaesthesiol 1996 13(6) 599-605. 

The importance of the patient s position has been illustrated by a study in which transient neurological symptoms occurred in five of 12 volunteers who were given 5% lidocaine 50 mg intrathecaUy and then placed in the low lithotomy position (251). No consistent abnormalities were detected by prespinal and postspinal electromyography, nerve conduction studies, or somatosensory evoked potentials. This is in line with the current opinion that transient neurological symptoms constitute neither a true neurological syndrome nor an expression of the neurotoxicity of local anesthetics. 

In six patients with multiple myeloma who developed a thalidomide-induced sensory polyneuropathy, spinal cord MRI showed high-signal intensity in the posterior columns in only one patient, with abnormal central conduction time at somatosensory-evoked potentials (38). These results suggest that thalidomide can induce either an axonal length-dependent neuropathy or, less often, a ganglionopathy. 

Lamm O, Pratt H. 1985. Subclinical effects of exposure to inorganic mercury revealed by somatosensory-evoked potentials. Eur Neurol 24 237-243. 

Findings Impaired Halstead Impairment Index, rotational testing, asymmetry of saccadic velocity, and somatosensory evoked potentials... 

Lotsch, J. Geisslinger, G. Mohammadian, P. Brune, K. Kobal, G. Effects of flurbiprofen enantiomers on pain-related chemo-somatosensory evoked potentials in human subjects. Br. J. Clin. Pharmacol. 1995, 40, 339-346. 

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