© 2005 European Society of Cardiology
BNP as a marker of diastolic dysfunction in the general population: Importance of left ventricular hypertrophy
a Klinik und Poliklinik für Innere Medizin II, Klinikum der Universität Regensburg 93042 Regensburg, Germany
b Institut für Epidemiologie und Sozialmedizin, Universität Münster Germany
c GSF, Institut für Epidemiologie Neuherberg, Germany
d Medizinische Klinik II, Universitätsklinikum Schleswig-Holstein Campus Lübeck, Germany
* Corresponding author. Tel.: +49 941 944 7211; Fax: +49 941 944 7213. E-mail address: andreas.luchner{at}klinik.uni-regensburg.de
| Abstract |
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BNP is a marker of systolic left ventricular dysfunction (LVSD) and heart failure. To assess BNP for the detection of diastolic dysfunction in the general population, we examined 1678 subjects within an age- and sex-stratified survey (MONICA Augsburg). BNP was measured using a commercially available RIA (Shionogi).
BNP increased in subjects with diastolic dysfunction (mean 20.3±4.7 pg/ml vs. control 9.6±0.5 pg/ml, p<0.001), but to a lesser extent than in subjects with LV hypertrophy (LVH, mean 37.3±49.1 pg/ml, p<0.001 vs. control) or LVSD (mean 76.2±23.2 pg/ml, p<0.001 vs. control). Individuals with sole diastolic abnormality displayed BNP concentrations at the control level (mean 9.7±1.7 pg/ml). In univariate analysis, age, BMI, systolic blood pressure, left atrial size, LV mass index, diastolic dysfunction and EF displayed a significant correlation with BNP (p<0.001). However, LV mass index displaced diastolic dysfunction as a significant predictor of BNP in multivariate analysis. Upon ROC analysis, sensitivity and specificity for the detection of diastolic dysfunction by BNP were only 61% and 55%, respectively. Nevertheless, a normal BNP test virtually excluded the presence of diastolic dysfunction and concomitant LVH (NPV 99.9%).
Increased BNP concentrations in subjects with diastolic dysfunction are strongly related to LVH. Population-wide screening for diastolic dysfunction with BNP cannot be recommended although a normal BNP test usually excludes diastolic dysfunction and LV hypertrophy.
Key Words: Heart failure Diastolic dysfunction BNP LV hypertrophy Echocardiography
Received July 13, 2004; Revised November 30, 2004; Accepted December 20, 2004
1 For the MONICA investigators. The MONICA Augsburg study was initiated by U. Keil and co-workers.
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