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Table 2 Sympathetic tone, as measured by baseline plasma catecholamine levels and 24-h heart rate variability, in endstage renal disease (ESRD) patients and controls.

From: Sympathetic hyperactivity influences chemosensor function in patients with end-stage renal disease

  Controls
(n = 10)
ESRD
(n = 10)
Plasma catecholamine levels   
   Norepinephrine, nmol/L 1.6 ± 0.4 5.8 ± 0.6*
   Epinephrine, pmol/L 342 ± 75 742 ± 281
Heart rate variability
   SDNN, ms 126.4 ± 19 100.2 ± 12*
   SDANN, ms 121 ± 20 95.7 ± 10
   RMSSD, ms 27.1 ± 8 15.7 ± 2*
   Triangular index 33.6 ± 4 25.7 ± 3*
  1. Values are means ± SEM. *P < 0.05.