Improved patient selection for cardiac resynchronization therapy by normalization of QRS duration to left ventricular dimension

ConclusionSince normalized QRSd reflects myocardial conduction properties, these findings suggest that myocardial conduction velocity rather than increased path length mainly determines response to CRT. Normalizing QRSd to LV dimension might provide a relatively simple method to improve patient selection for CRT.
Source: Europace - Category: Cardiology Source Type: research