TY  - JOUR
T1  - QRs morphology rather than qrs duration for predicting crt response
AU  - Selzman K, Shein M
Y1  - 2011/11/14
N1  - 10.1001/archinternmed.2011.516
JO  - Archives of Internal Medicine
SP  - 1861
EP  - 1862
VL  - 171
IS  - 20
N2  - 
Sipahi et al reported in their meta-analysis of 5 cardiac resynchronization therapy (CRT) trials that QRS duration was an important predictor of response to CRT.1 They concluded that patients with a QRS of 150 milliseconds (ms) or greater had a reduction in heart failure events, whereas those with a QRS less than 150 ms did not. Unfortunately, there was no analysis of QRS morphology, eg, type of bundle branch block. Although they proposed a future meta-analysis to further refine QRS duration cutoffs, they failed to mention that QRS morphology may be equally or more important than QRS duration.

SN  - 0003-9926
M3  - doi: 10.1001/archinternmed.2011.516
UR  - http://dx.doi.org/10.1001/archinternmed.2011.516
ER  -