Effects of echo-optimization of left ventricular assist devices on functional capacity, a randomized controlled trial.

4 Also, O 2 pulse manifests a significant trend; this parameter represents the ratio of oxygen consumption to heart rate and expresses the volume of oxygen ejected from the ventricles with each cardiac contraction.

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control group: from 504 ± 103 to 499 ± 107, P = 0.02), a secondary endpoint of our study; for other parameters, the increase did not reach statistical significance ( Table 5 ).

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