A high percentage of BiV pacing is associated with improved CRT response.1 However, the presence of a pacing stimulus does not imply full capture.2,3 Traditional pacing counters only report the presence of a pacing stimulus, potentially leading to over-reporting of effective pacing.2,3
The EffectivCRT™ Diagnostic uses a unipolar electrogram to evaluate morphology, looking for a negative deflection which implies when a paced beat is effective.4
In 18% of patients, device-reported % V. Pacing overestimated effective CRT by 3%. 3 out of 57 patients had virtually no effective pacing, whereas the % V pacing was > 90%, as demonstrated in the graph below.5
Only see the quantity of pacing5
Also see the quality of pacing5
Hayes DL, et al. Heart Rhythm. 2011;8:1469-1475.
Daubert JC, et al. Heart Rhythm. 2012;9:1524–1576.
Brignole M, et al. Eur Heart J. 2013;34:2281–2329.
Ghosh S, et al. Europace. 2015;17:1555-1562.
Hernandez, et al. Presented at CardioStim 2016 (Abstract 99-06).