PMID- 21449997 OWN - NLM STAT- MEDLINE DCOM- 20110719 LR - 20161125 IS - 1751-7133 (Electronic) IS - 1527-5299 (Linking) VI - 17 IP - 2 DP - 2011 Mar-Apr TI - Routine serial echocardiography in systolic heart failure: is it time for the heart failure guidelines to change? PG - 85-9 LID - 10.1111/j.1751-7133.2011.00213.x [doi] AB - The authors sought to obtain objective evidence for impacting the American College of Cardiology Heart Failure Guidelines for the routine use of serial echocardiography by assessing the reliability of the use of clinician-assessed patient symptoms and New York Heart Association (NYHA) functional classification compared with ejection fraction (EF) measured by echocardiography. A prospective study in 256 patients with systolic heart failure (HF) enrolled into an HF disease management program with EF