Results:
TMVI with the use of balloon-expandable valve system was performed for
24 bioprostheses, 7 annuloplasty rings, and 12 native valves.
Compared to patients without
increase in LVOT gradient (∆PG <10 mmHg; n=33), patients with
increase in LVOT gradient (∆PG ≥10 mmHg; n=10) had smaller LV
end-systolic volume (LVESV), greater LV ejection fraction (LVEF) and
smaller aorto-mitral (AM) angle.
LVOT
area at the valve stent distal edge showed strong
association with ∆PG
(r=-0.68, P<0.0001).
Only
small AM angle was associated with small LVOT area at the valve stent
distal edge on multivariable analysis, independent of LVESV and LVEF.