Table 2.

Immediate Downstream Flow in the Basilar Artery relative to Severity of Stenosis and Tandem disease

	Flow (ml/min)	p value
Disease Severity – worst disease		<0.01*
Occlusion (n=24)	33 ± 37
Severe (70-99% stenosis) (n=32)	72 ± 54
Moderate (50-69% stenosis) (n=16)	88 ± 51
Vessel Involvement		0.01
Basilar Only or Vertebral Only (n=51)	71 ± 56
Basilar and Vertebral (n=21)	43 ± 35

^*Occlusion vs. Severe, p<0.05; Occlusion vs. Moderate, p<0.05 on post hoc Tukey test