Table 2.
Performance of the StatStrip-Lactate and iSTAT-CG4+ tests to predict acidosis in umbilical cord blood at different Lactate cut-offs and pH levels.
|
Lactate>6.6 mmol/L |
Lactate>5.1 mmol/L |
|||
|---|---|---|---|---|
| pH<7.20 | pH<7.05 | pH<7.20 | pH<7.05 | |
| StatStrip-Lactate | ||||
| Sensitivity (%) | 25 | 60 | 46 | 80 |
| Specificity (%) | 83 | 97 | 83 | 79 |
| PPVa (%) | 92 | 92 | 96 | 70 |
| NPVb (%) | 12 | 80 | 16 | 87 |
| iSTAT-CG4+ | ||||
| Sensitivity (%) | 35 | 70 | 52 | 80 |
| Specificity (%) | 83 | 88 | 83 | 71 |
| PPVa (%) | 94 | 78 | 96 | 62 |
| NPVb (%) | 14 | 83 | 18 | 86 |
a
PPV, positive predictive value.
b
NPV, negative predictive value.