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- W4376596474 abstract "Background: Plasma brain natriuretic polypeptide (BNP) levels have been used as biochemical markers of systolic left ventricular (LV) dysfunction. Although in vitro studies have shown the existence of BNP messenger RNA in the atria, the main production site of BNP is believed to be the ventricle. The hypothesis that the atrium could be a source of BNP was examined in patients with lone atrial fibrillation (AF), the most common type of sustained arrhythmia. Methods and Results: We studied 16 controls and 21 patients with lone AF. Plasma samples for BNP were selectively and serially obtained from the aorta, anterior interventricular vein (AIV), and coronary sinus (CS). Atrial natriuretic polypeptide (ANP) levels were also measured to determine whether the CS samples contained significant amounts of atrial venous drainage. Of the 3 sample locations, the CS had the greatest ANP levels, confirming transcatheter sampling position accuracy. BNP levels were significantly greater in the CS than AIV in the patients with AF (279±226 v 126±97 pg/mL; P < .01). Consequently, plasma BNP levels were also greater in the patients with AF than controls (103±90 v 5±2 pg/mL; P < .001). LV ejection fraction was significantly less in patients with AF than control patients. Atrial production of BNP decreased significantly after successful DC cardioversion of AF in the 5 restudied patients (182±139 v 59±64 pg/mL; P < .05). Conclusion: The data suggest that AF is a condition in which BNP is produced in the atrium itself." @default.
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- W4376596474 date "2000-06-01" @default.
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- W4376596474 title "Atrium as a source of brain natriuretic polypeptide in patients with atrial fibrillation" @default.
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- W4376596474 doi "https://doi.org/10.1016/s1071-9164(00)90010-1" @default.
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