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

Table 3

Clinical evaluation of 6-hour lactate trend analysis from subcutaneous adipose tissue (ΔsatLAC) versus arterial blood (ΔartLAC). Lactate measurements are stratified to positive, stable and negative lactate trends as indicated in Figure 1(b).

𝑛=245 6-hourly paired lactate trends	Acceptable measurement %	Unacceptable falsely high %	Unacceptable falsely low %
Positive trend (>20%)	61.9	11.1	27.0
Negative trend (<−20%)	66.7	27.0	6.3
No change (±20%)	66.4	20.9	12.7
Total trend analysis	65.3	19.9	14.8