Clinical Research Relationship Between Insulin-Like Growth Factor Binding Protein-2 and Left Ventricular Stroke Volume in Patients With Aortic Stenosis
2015
Background: Lower plasma insulin-like growth factor binding protein (IGFBP)-2 levels have been associated with altered metabolism linked to visceral obesity. These abnormalities have been linked with worsening of left ventricle (LV) remodelling and dysfunction in patients with aortic stenosis (AS). Whether IGFBP-2 is involved in these relationships is currently unknown. The objective of this study was to examine the relationship between circulating IGFBP-2 and LV pump function measured according to stroke volume index in AS patients with preserved LV ejection fraction. Methods: Two hundred eight patients with mild to moderate AS were prospectively recruited in the Metabolic Determinants of the Progression of Aortic Stenosis (PROGRESSA) study and underwent Doppler-echocardiography. Stroke volume index (SVi) was calculated using Doppler in the LV outflow tract and was indexed to body surface
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