Table 3 Effects of ECLS on the pulse wave reflection obtained from aortic pressure waveform in rats at baseline and at 30, 60, and 90 min post-ECLS.

From: Extracorporeal Life Support Enhances the Forward Pressure Wave to Cause a Mismatch between Cardiac Oxygen Demand and Supply

 

|Pf|

Fold change

|Pb|

Fold change

τ w

τw/CL

Time point

Baseline

22.5 ± 6.7

1.000 ± 0.000

12.4 ± 2.1

1.000 ± 0.000

30.1 ± 3.0

0.180 ± 0.016

Post-ECLS 30 min

32.5 ± 14.5*

1.594 ± 0.505*

16.0 ± 2.2*

1.326 ± 0.248*

26.7 ± 2.6

0.178 ± 0.020

Post-ECLS 60 min

33.8 ± 15.7*

1.611 ± 0.395*

15.7 ± 2.2*

1.232 ± 0.210*

26.5 ± 3.0

0.182 ± 0.022

Post-ECLS 90 min

31.7 ± 14.0*

1.467 ± 0.497*

14.9 ± 2.7*

1.208 ± 0.231*

26.6 ± 3.0

0.180 ± 0.022

  1. Variables are expressed as median  ±  interquartile range (IQR). CL = cardiac cycle length (ms); |Pf| = magnitude of forward pressure wave (mmHg); |Pb| = magnitude of reflected pressure wave (mmHg); τw = arterial wave transit time (ms).
  2. *P < 0.05 compared with baseline.
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