PMID- 20142024 OWN - NLM STAT- MEDLINE DCOM- 20100907 LR - 20181201 IS - 1532-8414 (Electronic) IS - 1071-9164 (Linking) VI - 16 IP - 2 DP - 2010 Feb TI - Baseline plasma NT-proBNP and clinical characteristics: results from the irbesartan in heart failure with preserved ejection fraction trial. PG - 128-34 LID - 10.1016/j.cardfail.2009.09.007 [doi] AB - BACKGROUND: N-terminal B type natriuretic peptide (NT-proBNP) is usually elevated in heart failure (HF) patients with reduced ejection fraction (EF). Less is known about NT-proBNP in HF with preserved EF (HF-PEF). We measured baseline NT-proBNP in 3562 HF-PEF enrolled patients in the Irbesartan in Heart Failure with Preserved Ejection Fraction trial. METHODS AND RESULTS: Patients with EF >or=45%, age >or=60 years, and either New York Heart Association (NYHA) II-IV symptoms with HF hospitalization (HFH) within 6 months or NYHA III-IV symptoms with corroborative evidence of HF or structural changes associated with HF-PEF. NT-proBNP (pg/mL) measured centrally using the Elecsys proBNP assay (Roche). Mean age 72 +/- 7 years, 60% were women, the investigator indicated HF etiology was hypertension in 64%; the majority were in NYHA III. Medications included diuretics in 82%, angiotensin-converting enzyme inhibitor in 26%, beta-blocker in 59%, and spironolactone in 15%. Median NT-proBNP was 341 pg/mL (interquartile range 135 to 974 pg/mL) and geometric mean was 354 pg/mL. In multivariate analysis, the baseline characteristics most strongly associated with higher NT-proBNP levels were atrial fibrillation (ratio of geometric mean 2.59, P < .001), NYHA IV symptoms (1.52, P < .001), lower estimated glomerular filtration rate (1.44, P < .001), and HFH hospitalization within 6 months (1.37, P < .001). CONCLUSIONS: Most HF-PEF patients have elevated NT-proBNP levels. The NT-proBNP concentrations were related to baseline characteristics generally associated with worse outcomes for HF patients. CI - Copyright 2010. Published by Elsevier Inc. FAU - McKelvie, Robert S AU - McKelvie RS AD - McMaster University and Hamilton Health Sciences, Hamilton, ON, Canada. robert.mckelvie@phri.ca FAU - Komajda, Michel AU - Komajda M FAU - McMurray, John AU - McMurray J FAU - Zile, Michael AU - Zile M FAU - Ptaszynska, Agata AU - Ptaszynska A FAU - Donovan, Mark AU - Donovan M FAU - Carson, Peter AU - Carson P FAU - Massie, Barry M AU - Massie BM CN - I-Preserve Investigators LA - eng PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial DEP - 20091104 PL - United States TA - J Card Fail JT - Journal of cardiac failure JID - 9442138 RN - 0 (Biomarkers) RN - 0 (Biphenyl Compounds) RN - 0 (Peptide Fragments) RN - 0 (Protein Precursors) RN - 0 (Tetrazoles) RN - 0 (pro-brain natriuretic peptide (1-76)) RN - 114471-18-0 (Natriuretic Peptide, Brain) RN - J0E2756Z7N (Irbesartan) SB - IM MH - Aged MH - Biomarkers/blood MH - Biphenyl Compounds/*therapeutic use MH - Double-Blind Method MH - Female MH - Heart Failure/*blood/*drug therapy/physiopathology MH - Humans MH - Internationality MH - Irbesartan MH - Male MH - Middle Aged MH - Natriuretic Peptide, Brain/biosynthesis/*blood MH - Peptide Fragments/biosynthesis/*blood MH - Protein Precursors/biosynthesis/*blood MH - Stroke Volume/drug effects/*physiology MH - Tetrazoles/*therapeutic use EDAT- 2010/02/10 06:00 MHDA- 2010/09/08 06:00 CRDT- 2010/02/10 06:00 PHST- 2008/08/28 00:00 [received] PHST- 2009/07/27 00:00 [revised] PHST- 2009/09/24 00:00 [accepted] PHST- 2010/02/10 06:00 [entrez] PHST- 2010/02/10 06:00 [pubmed] PHST- 2010/09/08 06:00 [medline] AID - S1071-9164(09)01091-4 [pii] AID - 10.1016/j.cardfail.2009.09.007 [doi] PST - ppublish SO - J Card Fail. 2010 Feb;16(2):128-34. doi: 10.1016/j.cardfail.2009.09.007. Epub 2009 Nov 4.