Abstract:
:Although the effect of low temperature on the peripheral nervous system has been systematically studied, the effect of high temperature has not. We investigated the effect of elevating limb temperature from 32 degrees C to 42 degrees C by performing sequential motor studies, antidromic sensory studies, and 3-Hz repetitive stimulation in normal subjects. In addition, we recorded single motor units by using threshold stimulation. On average, motor amplitude and duration decreased by 27% and 19%, respectively, whereas sensory amplitude and duration decreased by 50% and 26%, respectively. Neuromuscular transmission remained normal at 42 degrees C. Single motor unit recordings revealed a reduction in amplitude of 26%, similar to the overall reduction in compound motor amplitude. These findings demonstrate that significant reductions in sensory and motor amplitudes can occur in normal nerves at high temperature; we hypothesize that these changes are secondary to alterations in nerve and muscle ion channel function.
journal_name
Muscle Nervejournal_title
Muscle & nerveauthors
Rutkove SB,Kothari MJ,Shefner JMdoi
10.1002/(sici)1097-4598(199704)20:4<431::aid-mus5>subject
Has Abstractpub_date
1997-04-01 00:00:00pages
431-6issue
4eissn
0148-639Xissn
1097-4598pii
10.1002/(SICI)1097-4598(199704)20:4<431::AID-MUS5>journal_volume
20pub_type
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