主动脉瓣区面积及梯度差异与主动脉瓣狭窄的严重程度分级
Cite this article as: Lancellotti P. Grading aortic stenosis severity when the flow modifies the gradient-valve area correlation. Cardiovasc Diagn Ther 2012;2:6-9. DOI: 10.3978/j.issn.2223-3652.2012.02.03
Editorial

主动脉瓣区面积及梯度差异与主动脉瓣狭窄的严重程度分级

Patrizio Lancellotti

University of Liège, Department of Cardiology, Heart Valve Clinic, University Hospital Sart Tilman, Liège, Belgium

Corresponding to:
Patrizio Lancellotti, MD, PhD. Department of Cardiology, University Hospital Sart Tilman, B-4000 Liège, Belgium.
Tel: + 32 4 366 71 94; Fax: + 32 4 366 71 95. Email: plancellotti@chu.ulg.ac.be.

摘要:

主动脉瓣狭窄(AS)是发达国家最常见的心脏瓣膜病,其经典诊断方式是超声心动图,也是检测和评估主动脉瓣狭窄严重程度的标准方法。虽则如此,主动脉瓣狭窄严重程度的评估依然充满了挑战。通常来讲,严重主动脉瓣狭窄指平均梯度>40 mmHg,主动脉瓣区面积(AVA)<1 cm2,且峰值主动脉血流速度 >4.0m/s。然而,同一患者的平均梯度和脉瓣区面积常常出现偏差。对于左心室射血分数降低导致的低心排血量患者而言,这种差异并不难理解,但这种偏差也会出现于明显左心室功能尚存的患者中,在日常临床诊治当中可能导致对狭窄及症状严重性估计不足,耽误了主动脉瓣置换术(AVR)的施行,这也会对患者预后产生负面影响。通过本刊,OZKA细致地综述了左心室功能尚存患者低梯度瓣膜性主动脉狭窄的概念。

Keywords

Aortic stenosis; classification; echocardiography; outcome

Cardiovasc Diagn Ther 2012;2:6-9. DOI: 10.3978/j.issn.2223-3652.2012.02.03

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