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Annals of Intensive Care

Table 3 Changes in microcirculatory parameters monitored by near-infrared spectroscopy and use of a vascular occlusion test in the two neuromuscular electrical stimulation (NMES) protocols

From: Acute microcirculatory effects of medium frequency versus high frequency neuromuscular electrical stimulation in critically ill patients - a pilot study

 

HF protocol (n = 17)

MF protocol (n = 14)

Microcirculatory parameter

Before

After

P

Before

After

P

Tissue oxygenation (StO2)

79 ± 10

77 ± 11

0.06

76 ± 10

75 ± 11

0.6

StO2 downslope (%/minute)

8.6 ± 2.2

9.9 ± 5.1

0.08

8.8 ± 3.8

9.9 ± 3.6

0.07

StO2 upslope (%/second)

2.7 ± 1.4

3.2 ± 1.7

0.04

2.5 ± 1.4

3.1 ± 1.7

0.03

Time to baseline (seconds)

160 ± 55

145 ± 49

0.03

163 ± 37

144 ± 33

0.001

  1. Legend: HF, high frequency; MF, medium frequency: StO2, tissue oxygen saturation.
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