Figure 2From: Local electrogram delay recorded from left ventricular lead at implant predicts response to cardiac resynchronization therapy: Retrospective study with 1 year follow up Relationship of the QLV and CRT effects. The greater QLV at implantation of CRT system correlates with an increase in LVEF, decrease in LVESD, shortening of QRSd, and reduction in NT-proBNP at 12-month follow-up. Pearsons’s correlation coefficients (r) with p-values are provided. Abbreviations as in Table 1.Back to article page