Prolonged compound muscle action potential duration in critical illness myopathy

Brent P. Goodman, C. Michel Harper, Andrea J. Boon

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


Critical illness myopathy (CIM) is a frequent cause of generalized weakness in the intensive care unit. Prolonged compound muscle action potential (CMAP) durations have been described in this patient population, and this study presents further data on CMAP duration in normal controls and patients with CIM. The findings highlight the importance of testing multiple nerve muscle combinations in weak, critically ill patients. Recognition of this pattern, which has not been widely described, can facilitate the diagnosis of CIM.

Original languageEnglish (US)
Pages (from-to)1040-1042
Number of pages3
JournalMuscle and Nerve
Issue number6
StatePublished - Dec 1 2009


  • CMAP
  • Compound muscle action potential
  • Critical illness
  • Duration
  • Myopathy

ASJC Scopus subject areas

  • Physiology
  • Clinical Neurology
  • Cellular and Molecular Neuroscience
  • Physiology (medical)


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