Table 4.

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

	Right vertebral artery			P value
Head Positions	Neutral	Right Lateral	Left Lateral	Neutral	Right Lateral	Left Lateral
CDI <25
PSV				0.9769	0.2255	0.1227
Group I	48.30 + 21.11	44.10 + 18.69	43.11 + 19.10
Group II	48.05 + 25.01	47.75 + 22.20	47.65 + 20.11
EDV				0.8766	0.2321	0.6543
Group I	19.80 + 7.65	17.20 + 8.59	18.22 + 5.57
Group II	18.98 + 7.87	18.53 + 6.98	17.83 + 11.76
CDI >25
PSV				0.8812	< 0.001	< 0.001
Group I	52.43 + 27.10	41.12 + 22.10	40.89 + 23.10
Group II	51.60 + 26.32	49.34 + 27.32	48.66 + 28.18
EDV				0.2133	< 0.001	< 0.001
Group I	20.90 + 9.11	14.56 + 7.77	13.58 + 6.72
Group II	21.33 + 9.21	20.32 + 7.78	19.30 + 8.26

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