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Table 1 Patient characteristics

From: Diagnostic accuracy of quantitative neuromuscular ultrasound for the diagnosis of intensive care unit-acquired weakness: a cross-sectional observational study

  No ICU-AW
N = 30
ICU-AW
N = 41
P value
Male (%) 22 (73) 25 (61) 0.41
Age (median years [IQR]) 62 [49–69] 60 [51–70] 0.80
Body length (median cm [IQR]) 175 [170–180] 172 [168–183] 0.46
Body weight (median kg [IQR]) 75 [70–81] 75 [65–90] 0.66
History of myopathy (%) 0 (0) 1 (2) 1.00
History of polyneuropathy (%) 0 (0) 0 (0) 1.00
Any polyneuropathy risk factor in history (%) 14 (47) 22 (54) 0.73
 Diabetes mellitus (%) 2 (7) 5 (12) 0.69
 Alcohol abuse (%) 5 (17) 10 (24) 0.56
 Kidney failure (%) 2 (7) 1 (2) 0.57
 Chemotherapy (%) 7 (23) 9 (22) 1.00
Admission reason (%)    0.87
 Medical (%) 12 (40) 18 (44)  
 Emergency surgical (%) 9 (30) 10 (24)  
 Elective surgical (%) 9 (30) 13 (32)  
Dominant hand right (%) 26 (90) 34 (92) 1.00
APACHE IV score (median [IQR]) 58 [50–77] 71 [61–85] <0.01
Maximum total SOFA score before ultrasound (median [IQR]) 8 [8–12] 12 [10–14] <0.01
Sepsis before ultrasound (%) 18 (60) 32 (78) 0.17
Mean MRC (median [IQR]) 4.4 [4.0–4.7] 3.5 [2.8–3.7] NA
Day of MRC (median [IQR]) 7 [4–11] 9 [6–14] 0.02
Day of NMUS (median [IQR]) 7 [5–10] 9 [6–14] 0.02
Length of MV (median days [IQR]) 6 [3–8] 8 [5–17] 0.01
Length of stay on ICU (median days [IQR]) 9 [6–13] 15 [9–23] <0.01
Death in ICU (%) 0 (0) 2 (5) 0.51
  1. IQR interquartile range, APACHE Acute Physiology and Chronic Health Evaluation, SOFA sequential organ failure assessment, MRC medical research council, NMUS neuromuscular ultrasound, MV mechanical ventilation, ICU intensive care unit
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