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Correlation of recovery of RV preload-adjusted regional external work with the dysfunction predictor index (see text for explanation). There was no independent effect on recovery of function due to opening or closing the pericardium or using or not using dobutamine. ○, Open pericardium, no dobutamine; □, open pericardium + dobutamine; ●, closed pericardium, no dobutamine; ■, closed pericardium + dobutamine.
