Q: Muscle ultrasound in Critical Illness Myopathy (CIM) and Critical Illness Polyneuropathy (CIP) will show? (select one)
A) increased echogenicity
B) decreased echogenicity
Answer: A
Muscle ultrasound has a good prognostic value in CIM/CIP. Increased echogenicity of major muscles like biceps, forearm, or mid-thigh muscles is found to be associated with a lower chance of discharge to home. It can be a useful tool to predict CIM/CIP in ICU patients with a sensitivity of 82 percent and specificity of 57 percent.
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Reference:
Kelmenson DA, Quan D, Moss M. What is the diagnostic accuracy of single nerve conduction studies and muscle ultrasound to identify critical illness polyneuromyopathy: a prospective cohort study. Crit Care 2018; 22:342.
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