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Table 1 The pulsatility index (PI) at baseline and during continuous positive airway pressure (CPAP) in normal and transplant subjects

From: The effect of continuous positive airway pressure (CPAP) on renal vascular resistance: the influence of renal denervation

  PI in controls PI in transplant  
CPAP (cmH2O) (n = 10) subjects (n = 6) P
0 0.65 ± 0.06 1.15 ± 0.18 < 0.05
2.5 0.64 ± 0.08   
5.0 0.70 ± 0.08* 1.24 ± 0.2* < 0.05
7.5 0.82 ± 0.08** 1.37 ± 0.24** < 0.05
Change from 0-5.0 0.048 ± 0.03 0.096 ± 0.04 NS
Change from 0-7.5 0.17 ± 0.06 0.23 ± 0.09 NS
  1. Differences between the two groups. Change from0–5.0 refers to the change in PI beween 0 and 5.0 cmH2O CPAP, whilechange from 0–7.5 refers to the change in PI beween 0 and 7.5 cmH2OCPAP. *P < 0.05, **P < 0.01, versus0cmH2O CPAP; NS, not significant.