Electrodiagnostic studies in the intensive care unit: A comparison study 2 decades later

Abstract

Introduction: Since the late 1980s, critical illness myopathy (CIM) and critical illness polyneuropathy (CIP) have been increasingly recognized in the intensive care unit (ICU). We explored whether these causes of ICU weakness were now more likely to lead to electrodiagnostic studies (EDX) at our institution than they were 19–20 years earlier. Methods: We reviewed 100 consecutive ICU patients who underwent EDX from 2009 to 2015 and compared them to a previously reported study population from 1990–1995. Results: Thirty-seven (39%) had CIM, CIP, or both versus 55% in the previous study (P = 0.04). Thirty-four (36%) were diagnosed with “traditional” pre-ICU causes of weakness, such as motor neuron disease or Guillain-Barre syndrome, versus 29% in the earlier study (P = 0.3). Discussion: CIM and CIP continue to be common disorders that lead to ICU EDX, but their proportion declined compared with 19–20 years earlier, possibly due to the perceived role and selective use of EDX in the ICU. Muscle Nerve 57: 772–776, 2018.