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Table 1 Patient demographics/characteristics

From: Comparison of parenchymal and ventricular intracranial pressure readings utilizing a novel multi-parameter intracranial access system

Sample size, n

35

Age (years), mean ± SD

52 ± 13

Sex, n (%)

 Female

19 (54)

 Male

16 (46)

Diagnosis, n (%)

 Subarachnoid hemorrhage

19 (54)

 Traumatic brain injury

15 (43)

 Intracerebral hemorrhage

1 (3)

Device implant time (days), mean ± SD

6.9 ± 3.0

PAR placement with respect to injured brain, n (%)

 Contralateral

26 (74)

 Ipsilateral

9 (26)

PAR placement in tissue, n (%)

 Healthy tissue

30 (86)

 Affected tissue

2 (6)

 Penumbral region

3 (9)

All ICP values (mmHg), range

 PAR

0-42

 EVD

0-40

Mean patient ICP values (mmHg), range

 PAR

5-22

 EVD

6-24

Total number of paired ICP readings1, n

2258

Number paired device readings per patient, range

8-127

Observations obtained with head of bed at 30°, n (%)

1884 (83)

  1. 1One EVD value in one subject was not obtained resulting in 2258 EVD and 2259 PAR readings.