Table 3.

Peak velocity in the vena contracta, as well as peak WSS and percentage at-risk tissue area in the AA, aortic arch and DA at baseline and follow-up according to patient group.

	No surgery (n=20)		Surgery (n=33)
	baseline	follow-up	baseline	follow-up
Vmax (m/s)	1.88±0.63	1.94±0.64	2.95±1.20*	2.50±0.46*
Peak WSS (Pa)
AA	1.17±0.29	1.17±0.34	1.50±0.68	1.57±0.37*
Arch	0.81±0.24	0.82±0.22	1.16±0.40*	1.13±0.35*
DA	0.79±0.20	0.77±0.22	0.97±0.29*	0.89±0.28
At-risk tissue area (%)
AA	1.0 (0.3–4.0)	1.1 (0.1–8.8)	24 (0.2–44)	28 (8.2–52)*
Arch	0 (0–0)	0 (0–0)	1.1 (0–15)*	2.6 (0–28)*
DA	0 (0–0)	0 (0–0)	0 (0–2.1)	0 (0–2.2)

Vmax: peak velocity; WSS: w all shear stress; AA: ascending aorta; DA: descending aorta.

^*p<0.05 between surgery and no-surgery groups seperately at baseline and follow-up.