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Table 2 Nerve and muscle properties of controls and pigs with peritonitis (values are given as mean ± SD)

From: Early changes of muscle membrane properties in porcine faecal peritonitis

  Controls (n = 10) Wilcoxon Peritonitis (n = 10) Wilcoxon Welch rank
  Baseline 27 hours (Pvalue) Baseline 27 hours (Pvalue) (Pvalue)
Nerve conduction studies
CMAP amplitude (mV) 1.62 ± 1.22 1.55 ± 1.08 0.19 1.05 ± 0.94 1.20 ± 1.17 0.19 0.80
CMAP duration (ms) 1.25 ± 0.11 1.40 ± 0.18 0.064 1.33 ± 0.14 1.61 ± 0.27 0.020* 0.044*
Stimulus for 50% maximal CMAP (mA) 3.74 ± 1.92 4.16 ± 2.04 0.77 3.32 ± 1.12 4.79 ± 1.51 0.0020** 0.35
Muscle velocity recovery cycles
Muscle relative refractory period (ms) 2.41 ± 0.42 2.44 ± 0.46 0.63 2.38 ± 0.18 3.47 ± 1.79 0.0098** 0.0048**
Early supernormality (%) 8.28 ± 2.69 8.64 ± 1.96 0.63 9.64 ± 2.82 6.50 ± 2.64 0.0039** 0.0061**
  1. (* = P <0.05, ** = P <0.01). CMAP, compound muscle action potential.