PMID- 22456701 OWN - NLM STAT- MEDLINE DCOM- 20120815 LR - 20120329 IS - 1435-1544 (Electronic) IS - 0938-7412 (Linking) VI - 23 IP - 1 DP - 2012 Mar TI - [Commentary on the 2010 ESC guidelines on device therapy in heart failure ]. PG - 33-7 LID - 10.1007/s00399-011-0158-6 [doi] AB - As part of the 2010 focused update of ESC guidelines on device therapy in heart failure, the guidelines on pacemakers in the treatment of heart failure were renewed. A new feature is that cardiac resynchronization therapy (CRT) is indicated for New York Heart Association (NYHA) class III and IV irrespective of the presence of left ventricular dilatation and specified for NYHA class IV (patient ambulatory, stable, life expectancy >6 months). Furthermore, NYHA class II (but not class I) has been added when there is left bundle branch block and QRS duration >/=150 ms. CRT is also indicated for patients in NYHA class III-IV with permanent atrial fibrillation and heart failure [left ventricular ejection fraction (LVEF) /= 130 ms and ventricular rate has slowed either spontaneously or by AV node ablation. In patients with heart failure (NYHA class II-IV, LVEF