TY - JOUR
T1 - Noninvasive electrocardiographic imaging of cardiac resynchronization therapy in patients with heart failure
AU - Rudy, Yoram
N1 - Funding Information:
Supported by Merit Award R37-HL333443 and grant R01-HL49054 from the National Heart, Lung and Blood Institute of the National Institutes of Health. Y. Rudy is the Fred Saigh Distinguished Professor at Washington University in St. Louis. He is named coinventor of the ECGI technology.
PY - 2006/10
Y1 - 2006/10
N2 - Cardiac resynchronization therapy (CRT) using biventricular (BiV) pacing has been developed to restore synchrony and improve cardiac performance in patients with heart failure. It has been clinically beneficial in 65% to 70% of patients. Being an electrical (pacing) approach, detailed electrical information during CRT is critical in understanding its mechanism and clinical outcome. However, electrical data from patients have been limited because of the requirement for invasive mapping. Electrocardiographic imaging provides the necessary tool to noninvasively obtain this information. We applied electrocardiographic imaging to 8 patients undergoing CRT during their native rhythm and various (single-ventricular and BiV) pacing modes with the following observations: (1) native rhythm activation was heterogeneous with latest activation in lateral left ventricular (LV) base (3 of 6 patients) or in anterolateral, midlateral, or inferior LV; (2) when accompanied by fusion, LV pacing was as effective as BiV; (3) right ventricular pacing was not effective for resynchronization; (4) efficacy of CRT depended strongly on patient-specific electrophysiologic substrate.
AB - Cardiac resynchronization therapy (CRT) using biventricular (BiV) pacing has been developed to restore synchrony and improve cardiac performance in patients with heart failure. It has been clinically beneficial in 65% to 70% of patients. Being an electrical (pacing) approach, detailed electrical information during CRT is critical in understanding its mechanism and clinical outcome. However, electrical data from patients have been limited because of the requirement for invasive mapping. Electrocardiographic imaging provides the necessary tool to noninvasively obtain this information. We applied electrocardiographic imaging to 8 patients undergoing CRT during their native rhythm and various (single-ventricular and BiV) pacing modes with the following observations: (1) native rhythm activation was heterogeneous with latest activation in lateral left ventricular (LV) base (3 of 6 patients) or in anterolateral, midlateral, or inferior LV; (2) when accompanied by fusion, LV pacing was as effective as BiV; (3) right ventricular pacing was not effective for resynchronization; (4) efficacy of CRT depended strongly on patient-specific electrophysiologic substrate.
UR - https://www.scopus.com/pages/publications/33749068668
U2 - 10.1016/j.jelectrocard.2006.03.012
DO - 10.1016/j.jelectrocard.2006.03.012
M3 - Article
C2 - 16950331
AN - SCOPUS:33749068668
SN - 0022-0736
VL - 39
SP - S28-S30
JO - Journal of Electrocardiology
JF - Journal of Electrocardiology
IS - 4 SUPPL.
ER -