Clinical Evaluation of Subcutaneous Lactate Measurement in Patients after Major Cardiac Surgery

Table 2

Clinical evaluation of absolute subcutaneous adipose tissue versus arterial blood (artLAC) lactate concentrations stratified for individual lactate ranges according to Figure 1(a).

𝑛=1550 hourly paired lactate readings	Acceptable %	Unacceptable [1st order] %	Unacceptable [2nd order] %
artLAC<1.5mM	77.6	22.2	0.2
1.5mM≤artLAC<3.5mM	72.9	12.2	14.9
3.5mM≤artLAC<5mM	80.0	20.0	0.0
5mM≤artLAC<10mM	95.4	2.3	2.3
10mM≤artLAC	95.2	4.8	0.0
Total readings	76.5	17.6	5.9

No readings from subcutaneous adipose tissue were found within the third-order unacceptable measurement zone.