Relationship between Pulsatility Index and Clinical Course of Acute Ischemic Stroke after Thrombolytic Treatment

Table 3

Correlations of blood flow velocity parameters on the lesion side with clinical criteria.

		24 hours after NIHSS	3 months after NIHSS	3 months after mRS
Mean velocity (cm/s)	Pearson Correlation	−0.161	0.100	0.066
	Sig. (2-tailed)	0.273	0.509	0.658
	𝑁	48	48	48
Peak-systolic velocity (cm/s)	Pearson Correlation	−0.278	0.109	0.056
	Sig. (2-tailed)	0.056	0.472	0.705
	𝑁	48	48	48
End-diastolic velocity (cm/s)	Pearson Correlation	−0.435**	−0.317*	−0.308*
	Sig. (2-tailed)	0.002	0.032	0.033
	𝑁	48	48	48
Pulsatility index	Pearson Correlation	0.411**	0.507**	0.425**
	Sig. (2-tailed)	0.004	0.000	0.003
	𝑁	48	48	48

**Correlation is significant at the 0.01 level (2 tailed).
*Correlation is significant at the 0.05 level (2 tailed).