PMID- 22233979 OWN - NLM STAT- MEDLINE DCOM- 20120710 LR - 20141120 IS - 1531-7080 (Electronic) IS - 0268-4705 (Linking) VI - 27 IP - 2 DP - 2012 Mar TI - Cardiac resynchronization therapy: expanding clinical indications and refining patient selection. PG - 137-42 LID - 10.1097/HCO.0b013e32834febd3 [doi] AB - PURPOSE OF REVIEW: Cardiac resynchronization therapy (CRT) can reduce morbidity and mortality in patients with heart failure. However, a proportion of patients do not respond to CRT. This review addresses important clinical questions regarding patient selection for CRT. RECENT FINDINGS: Three recent large randomized trials show that CRT reduces morbidity and mortality in patients with New York Heart Association (NYHA) functional class II heart failure. Observational studies and a recent meta-analysis suggest that patients with NYHA III heart failure and atrial fibrillation may benefit from CRT. However, atrioventricular node ablation should be considered in this population to ensure greater than 92% biventricular pacing. Data from clinical trials do not support the use of CRT in patients with baseline right bundle branch block (RBBB). SUMMARY: Careful selection of CRT candidates is vital to improve patient outcomes and reduce exposure to unnecessary complications. This review summarizes recent data on the selection of CRT candidates, with emphasis on patients with NYHA I and II heart failure, atrial fibrillation and RBBB. FAU - Nery, Pablo B AU - Nery PB AD - University of Ottawa Heart Institute, Ottawa, Canada. Pnery@ottawa-heart.ca FAU - Keren, Arieh AU - Keren A FAU - Birnie, David H AU - Birnie DH LA - eng PT - Journal Article PT - Review PL - United States TA - Curr Opin Cardiol JT - Current opinion in cardiology JID - 8608087 SB - IM MH - Cardiac Resynchronization Therapy/*methods MH - Global Health MH - Heart Conduction System/*physiopathology MH - *Heart Failure/mortality/physiopathology/therapy MH - Humans MH - Morbidity MH - *Patient Selection MH - Survival Rate MH - Treatment Outcome EDAT- 2012/01/12 06:00 MHDA- 2012/07/11 06:00 CRDT- 2012/01/12 06:00 PHST- 2012/01/12 06:00 [entrez] PHST- 2012/01/12 06:00 [pubmed] PHST- 2012/07/11 06:00 [medline] AID - 10.1097/HCO.0b013e32834febd3 [doi] PST - ppublish SO - Curr Opin Cardiol. 2012 Mar;27(2):137-42. doi: 10.1097/HCO.0b013e32834febd3.