Table 5.

Comparison of the Doppler Findings of Left Vertebral Artery Between 2 Groups.

	Left vertebral artery			P value
Head Positions	Neutral	Right Lateral	Left Lateral	Neutral	Right Lateral	Left Lateral
CDI <25
PSV				0.6783	0.4666	0.5322
Group I	43.46 + 12.75	41.30 + 15.94	40.60 + 9.48
Group II	44.41 + 13.73	43.43 + 15.84	42.85 + 19.74
EDV				0.2439	0.5818	0.3883
Group I	18.00 + 7.62	15.60 + 5.06	16.20 + 3.85
Group II	21.31 + 7.17	18.68 + 5.58	19.85 + 13.04
CDI >25
PSV				0.5818	< 0.001	< 0.001
Group I	40.60 + 13.78	31.15 + 12.34	30.20 + 10.67
Group II	45.60 + 14.49	44.0 + 16.81	43.45 + 17.23
EDV				0.3851	< 0.001	< 0.001
Group I	16.55 + 4.38	10.23 + 4.15	11.24 + 3.93
Group II	20.34 + 7.05	18.80 + 6.03	19.58 + 7.81

PSV, peak systolic blood flow velocity; EDV, end diastolic blood flow velocity; CDI, cervical degenerative index.