Lumbar puncture | ICP monitoring* | |||||
---|---|---|---|---|---|---|
CSFP wave amplitude during opening phase | CSF wave amplitude during lumbar infusion | ICP wave amplitude | ||||
< 2 mmHg | ≥ 2 mmHg | < 4 mmHg | ≥ 4 mmHg | < 4 mmHg | ≥ 4 mmHg | |
Responder (n = 35) | 13 | 22 | 4 | 31 | 1 | 34 |
Non-Responder (n = 10) | 8 | 2 | 6 | 4 | 7 | 3 |
Statistics | Sensitivity = 63; Specificity = 80 PPV = 92; NPV = 38 | Sensitivity = 88; Specificity = 60 PPV = 89; NPV = 60 | Sensitivity = 97; Specificity = 70 PPV = 92; NPV = 88 |