Valor pronóstico de las medidas seriadas de la functión ventricular izquierda y del rendimiento en el ejercicio en la insuficiencia cardiaca crónica

In clinically stable patients with chronic heart failure, ejection fraction and its changes were independently associated with outcome; on the contrary, serial cardiopulmonary exercise testing did not provide significant prognostic value. Baseline plus changes in ejection fraction showed better prognostic performance than baseline ejection fraction alone.