P Wave Area for Quantitative Electrocardiographic Assessment of Left Atrial Remodeling
Figure 2
Scatter plots relating CMR-quantified LA size to P wave morphology as measured in ECG lead V1. Data presented for total P wave area (1A), negative terminal area (1B), duration (1C), and maximum amplitude (1D). Patient data stratified based on normal (grey) and dilated (black) left atrial size on cine-CMR using an established diagnostic cutoff (>15 cm2/m2) [19].