Table 3 Abnormal neuromonitoring and outcome.

From: Brain hypoxia and metabolic crisis are common in patients with acute brain injury despite a normal intracranial pressure

Neuromonitoring abnormality

(as % of monitoring time)

SAH

TBI

Favourable outcome

(median, IQR)

Unfavourable outcome

(median, IQR)

P-value

Favourable outcome

(median, IQR)

Unfavourable outcome

(median, IQR)

P-value

ICP > 20 mmHg

1.7 (0.7–3.1) %

1.9 (1.2–5.8) %

0.28

2.6 (1.5–4.6) %

1.6 (1.1–3.4) %

0.32

CPP < 60 mmHg

1.6 (1.4–1.9) %

4.0 (1.3–6.2) %

0.11

6.3 (3.3–9.5) %

4.5 (1.9–5.3) %

0.052

PbtO2 < 20 mmHg

26 (1.4–48) %

37 (24–63) %

0.07

16% (8.7–32)

20 (10–43) %

0.65

Metabolic crisis

9.4 (1.7–25) %

3.0 (0.35–25) %

0.67

14 (1.9–23) %

0.91 (0.0–8.4) %

0.12

  1. The percentage of total monitoring time spent with abnormal neuromonitoring values stratified by outcome in each patient group. P-values are for the comparison between outcome strata for each variable (Mann–Whitney U-test). CPP Cerebral perfusion pressure, ICP Intracranial pressure, PbtO2 Brain tissue oxygen tension, SAH Subarachnoid haemorrhage, TBI Traumatic brain injury.
Back to article page