Abstract:
The ECG diagnosis of LVH is predominantly based on the QRS voltage criteria, i.e. the increased QRS complex amplitude in defined leads. The classical ECG diagnostic paradigm postulates that the increased left ventricular mass generates a stronger electrical field, increasing the leftward and posterior QRS forces. These increased forces are reflected in the augmented QRS amplitude in the corresponding leads. However, the clinical observations document increased QRS amplitude only in the minority of patients with LVH. The low sensitivity of voltage criteria has been repeatedly documented. We discuss possible reasons for this shortcoming and proposal of a new paradigm.
摘要:
LVH的心电图诊断主要基于QRS电压标准,即在定义的导联中增加的QRS复合波振幅。经典的ECG诊断范例假设左心室质量增加会产生更强的电场,增加向左和向后QRS力。这些增加的力反映在相应导联中的增加的QRS振幅中。然而,临床观察显示QRS波幅仅在少数LVH患者中增加。电压标准的低灵敏度已被反复记录。我们讨论了这一缺点的可能原因,并提出了新的范式。