Skip to main content

Advertisement

Table 2 Diagnostic parameters

From: Ultrasound measurements versus invasive intracranial pressure measurement method in patients with brain injury: a retrospective study

Characteristics Value r (Pearson correlation coefficient) Significant range of ‘r’ p-value
Data of patients included in the analysis 185
Intracranial pressure (mmHg) Minimum 5 Reference Reference Reference
Maximum 17
Mean ± SD 10.24 ± 3.51
aArterial blood pressure (mmHg) Minimum 84 0.1125 0.2527–0.3233 0.127
Maximum 101
Mean ± SD 90.61 ± 5.29
Cerebral perfusion pressure (mmHg) Minimum 71 0.9527 0.9243–0.957 < 0.0001
Maximum 88
Mean ± SD 78.13 ± 4.58
Partial pressure of carbon dioxide (mmHg) Minimum 4.85 0.9027 0.872–0.9264 < 0.0001
Maximum 5.95
Mean ± SD 5.24 ± 0.27
Straight sinus systolic flow velocity (cm/s) Minimum 23 0.8662 0.825–0.8982 < 0.0001
Maximum 40
Mean ± SD 31.11 ± 4.9
Straight sinus diastolic flow velocity (cm/s) Minimum 12 0.5538 0.4451–0.6465 < 0.0001
Maximum 18
Mean ± SD 13.47 ± 1.31
Straight sinus means flow velocity (cm/s) Minimum 15 0.9298 0.9072–0.947 < 0.0001
Maximum 25
Mean ± SD 20.16 ± 3.23
Middle cerebral artery systolic flow velocity (cm/s) Minimum 95 0.8724 0.833–0.9031 < 0.0001
Maximum 115
Mean ± SD 103.27 ± 5.64
Middle cerebral artery diastolic flow velocity (cm/s) Minimum 40 0.7681 0.7016–0.8214 < 0.0001
Maximum 55
Mean ± SD 47.38 ± 4.26
Middle cerebral artery means flow velocity (cm/s) Minimum 60 0.9 0.8685–0.9243 < 0.0001
Maximum 76
Mean ± SD 69.1 ± 3.81
Optic nerve sheath diameter (mm) Minimum 4 0.8717 0.832–0.9025 < 0.0001
Maximum 6
Mean ± SD 4.77 ± 0.43
aMiddle cerebral artery pulsatility index Minimum 0.85 0.1423 0.2134–0.2809 0.06
Maximum 1.05
Mean ± SD 0.93 ± 0.08
  1. Variables are represented as mean ± SD
  2. Pearson correlation was performed with intracranial pressure
  3. A p value less than 0.05 was considered significant
  4. aInsignificant correlation with intracranial pressure