The value of left ventricular strain-volume loops in predicting response to cardiac resynchronization therapy.

Whereas in CRT responders at baseline, although difference of peak PS between Midseptal and Midlateral did not reach statistical significance, the slope and R 2 -S/D coupling of the Midseptal PS–Global volume loop were significantly lower than those of Midlateral PS–Global volume loop ( P = 0.002 and P < 0.001, respectively) (Table 4 ).

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