Table 2.

Diagnostic parameters

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

Variables are represented as mean ± SD

Pearson correlation was performed with intracranial pressure

A p value less than 0.05 was considered significant

^aInsignificant correlation with intracranial pressure