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SSEP and F‐wave studies in acute inflammatory demyelinating polyradiculoneuropathy
Author(s) -
Gilmore Robin L.,
Nelson Kevin R.
Publication year - 1989
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.880120704
Subject(s) - somatosensory evoked potential , polyradiculoneuropathy , medicine , f wave , electrodiagnosis , central nervous system disease , anesthesia , surgery , guillain barre syndrome , pediatrics , nerve conduction velocity
Somatosensory evoked potentials (SSEPs) and F‐wave responses were compared after tibial (PTN) and median (MN) nerve stimulation in patients with acute inflammatory demyelinating polyradiculoneuropathy (AIDP). Nineteen patients were evaluated within 2 weeks of AIDP onset. Each had F‐wave and PTN‐SSEP studies; 18 had MN‐SSEP studies. Ten patients had absent or prolonged MN‐SSEP latencies, whereas 16 had abnormal MN F‐wave studies. Seventeen patients had an abnormal PTN‐SSEP while 12 had abnormal PTN F waves. Every patient with an abnormal MN‐SSEP also had an abnormal PTN‐SSEP. The most common PTN‐SSEP findings were an absent or prolonged latency of N8 or N22. All patients had either an abnormal MN F wave or PTN‐SSEP.