n = 484
Predischarge mitral valve gradient (mmHg)  3.46 ± 1.43
Predischarge heart rate (min−1)  80 ± 15
Predischarge stroke volume (ml)a  74 (58–93)
Predischarge cardiac index (l/m2)a  5.7 (4.6–7.4)
Predischarge haemoglobin value (mmol/l)  6.4 ± 0.8