Early hemodynamic evaluation of aortic valve replacement with Hancock Ⅱ Ultra valve / 中华胸心血管外科杂志

ABSTRACT

Objective To study the aortic valve replacement with Hancock Ⅱ Ultra valve and its early hemodynamic results.Methods The 30 patients who received Hancock Ⅱ Ultra aortic valve replacement at our hospital were matched 1 ∶1 with 30 patients who received Hancock Ⅱ on variables known to affect hemodynamic measurementssize of valve,age,sex,and body surface area.Early postoperative transthoracic echocardiography was performed in all patients.Results 3 months postoperatively,Hancock Ⅱ Ultra valves had significantly lower transvalular gradients,velocity,left ventricle mass index and larger effective orifice area.Compared with Hancock Ⅱ valves,in ≤22 mm group,Hancock Ⅱ Ultra valves had significantly lower transvalular velocity[ (2.26 ± 0.05 ) vs ( 2.57 ± 0.06 ),t =2.07,P ＜ 0.05 ],lower transvalular mean gradients [(11.4 ±1.3) vs (13.1 ±1.5),t =2.09,P＜0.05],higher effective orifice area[ (0.79 ±0.13)vs(0.71 ±0.02),t =2.06,P＜0.05],lower left ventricle mass index[ (119.1 ± 11.1)vs(133.2 ±16.4),t =2.67,P ＜0.05] and bigger left ventricle outflow tract (20.4 ±0.3 vs 18.9 ±0.2,t =2.23,P＜0.05).Conclusion The Hancock Ⅱ Ultra valve has more favorable early postoperative hemodynamics than the Hancock Ⅱ,especially for the small aortic ring patients.