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Linear correlation between systolic fractional shortening in the atrioventricular plane (AVP-FS) v pulmonary capillary wedge pressure (PCWP) in patients treated with metoprolol in the invasive substudy over six months. In a multivariate stepwise regression analysis, the AVP-FS was the only variable that was independently associated with the change in pulmonary capillary wedge pressure. ΔPCW % = −4.35 − 0.96(ΔAVP-FS %), r = 0.90, p = 0.001.
