慢性主动脉瓣关闭不全
一种慢性主动脉瓣膜病变,其特征是主动脉瓣关闭不全导致舒张期血液从主动脉反流至左心室,引起进行性左心室容量负荷过重。
定义
一种慢性主动脉瓣膜病变,其特征是主动脉瓣关闭不全导致舒张期血液从主动脉反流至左心室,引起进行性左心室容量负荷过重,从而诱发左心室偏心性肥厚、进行性心室扩张以及体循环动脉脉压显著增宽 [V1] [V3]。
严重程度标准
- 轻度(L):反流容积(RV)< 30 mL/次;反流分数(RF)< 30 %;有效反流孔面积(EROA)< 0.10 cm²;压力半降时间(PHT)> 500 ms;缩流颈(VC)< 0.3 cm [V1] [V3]。
- 中度(M):RV 30–59 mL/次;RF 30–49 %;EROA 0.10–0.29 cm²;PHT 200–500 ms;缩流颈(VC)0.3–0.59 cm [V1] [V3]。
- 重度(G):RV ≥ 60 mL/次;RF ≥ 50 %;EROA ≥ 0.30 cm²;PHT < 200 ms;缩流颈(VC)≥ 0.6 cm;降主动脉出现全舒张期反向血流 [V1] [V3]。
分层表现
模拟器严重程度分级
模拟器严重程度分级:
轻度, 中度, 重度
基线心律:
正常窦性心律
亦称为: 慢性主动脉瓣关闭不全 · 主动脉瓣关闭不全 · 主动脉瓣反流 · 主动脉瓣功能不全 · AR
该组中的其他病变
相关临床对比
文献来源
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