Why the study?
The prognostic implication of pre-CRT global left ventricular myocardial work efficiency remained unexplored.
Does lower baseline global left ventricular myocardial work efficiency (GLVMWE <75%) predict improved long-term survival in patients receiving cardiac resynchronization therapy?
Does lower baseline global left ventricular myocardial work efficiency (GLVMWE <75%) predict improved long-term survival in patients receiving cardiac resynchronization therapy?
A lower global left ventricular myocardial work efficiency before CRT is independently associated with improved long-term survival, suggesting that patients with greater potential for LV efficiency improvement derive more benefit from CRT.
May refine CRT candidate selection; leaves open whether it guides implantation decisions.
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Bijl et al. (2019) studied this question.
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