Table 2. Summary of the mean SPG before and after VSS.

Gradient	Pre-stent Δ mean (mm Hg) ±SD (95% CI)	Post-stent Δ mean (mm Hg) ±SD (95% CI)	p-value (paired student t-test)
Trans-stenotic (n = 45) (PTS–DSS)	17.3 ± 7.4 (15.2–19.5)	1.6 ± 1.5 (1.2–2.1)	<0.001
Trans-torcular (n = 39) (SSS–DTS)	1.2 ± 3.5 (0.2–2.3)	1.1 ± 1.5 (0.7–1.5)	0.825

PTS = proximal transverse sinus; DTS = distal transverse sinus; DSS = distal sigmoid sinus.