Table 1:

Venography and manometry measurements

Patient	Side	Blood Pressure (mm Hg)			Pressure Gradient (mm Hg)	% Stenosis^{^a}
Patient	Side	Superior Sagittal Sinus	Transverse Sinus	Sigmoid Sinus	Pressure Gradient (mm Hg)	% Stenosis^{^a}
1	Left	7	5	2	3	60.34
1	Right	7	7	8	−1	2.41
2	Right	10	8	7	1	2.13
3	Right	23	24	19	5	14.81
4	Left	56	34	16	18	50
4	Right	56	16	15	1	33.33
5	Left	39	29	18	11	82.35
5	Right	39	34	17	17	26.47
6	Right	83	88	7	81	61.64

↵a Defined as the percentage change between the narrowest point of the transverse sinus and the midpoint of the ipsilateral sigmoid sinus.