3.2 Change in PG across LVOT after TMVI (Table 4)
According to the change in LVOT gradient, study patients were classified into 2 groups; patients with significant increase in LVOT gradient defined as ΔPG ≥10 mm Hg [n = 10, ΔPG: 22.2 (13.3-27.1) mm Hg] and those without increase in LVOT gradient defined as ΔPG <10 mm Hg [n = 33, ΔPG: 1.7 (0-4.4) mm Hg]. At baseline, the two groups were similar in age, sex, heart rate, and systolic blood pressure. Device size were not associated with increase in LVOT gradient. Compared to patients without increase in LVOT gradient, patients with increase in LVOT gradient had smaller LV size and AM angle and greater LVEF at pre-procedure, and these differences were also observed at post-procedure.