严重主动脉瓣狭窄的类型

严重主动脉瓣狭窄的类型

重度主动脉瓣狭窄类型

Vmax

瓣膜面积

左心室射血分数

其他

高梯度(无症状或有症状)

4.0 米/秒

1.0 cm2

50%

低流量、低梯度,EF 降低

< 4.0 米/秒

1.0 cm2

< 50%

用低剂量多巴酚丁胺超声心动图鉴别假性狭窄,瓣膜面积 < 1.0 cm2,最大流速 > 4.0 米/秒

低流量、低梯度伴正常 EF(矛盾性低流量主动脉瓣狭窄)

< 4.0 米/秒

1.0 cm2

50% 伴小型肥厚左心室

通过测量血压正常时患者的每搏输出量指数 < 35 mL/m2来区分非重度主动脉瓣狭窄。

AS = 主动脉瓣狭窄; DVI = 多普勒速度指数,LV 流出道与主动脉速度之比; LV EF = 左心室射血分数; Vmax = 穿过主动脉瓣的峰值前向速度。

Data from Otto CM, Nishimura RA, Bonow RO, et al: 2020 ACC/AHA Guideline for the Management of Patients With Valvular Heart Disease: Executive Summary: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines.Circulation 143(5):e35–e71, 2021.doi: 10.1161/CIR.0000000000000932

AS = 主动脉瓣狭窄; DVI = 多普勒速度指数,LV 流出道与主动脉速度之比; LV EF = 左心室射血分数; Vmax = 穿过主动脉瓣的峰值前向速度。

Data from Otto CM, Nishimura RA, Bonow RO, et al: 2020 ACC/AHA Guideline for the Management of Patients With Valvular Heart Disease: Executive Summary: A Report of the American College of Cardiology/American Heart Association Joint Committee on Clinical Practice Guidelines.Circulation 143(5):e35–e71, 2021.doi: 10.1161/CIR.0000000000000932

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