Document Classification

Section Type: RESULTS

Text: Metoprolol-treated patients responded favorably, as expressed by improved exercise cardiac index ([mean + / - SD] placebo 4. 8 + / - 1. 6 to 4. 7 + / - 1. 8 liters/min per m2, metoprolol 4. 3 + / - 1. 1 to 5. 4 + / - 1. 9 liters/min per m2, p = 0. 0001) and stroke work index (placebo 44 + / - 20 to 41 + / - 27 g. m / m2, metoprolol 35 + / - 16 to 58 + / - 28 g. m / m2, p < 0. 0001).