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Medicina (Buenos Aires)

versión impresa ISSN 0025-7680

Resumen

HIGA, Claudio et al. NT-Pro-BNP levels performance before and after reversion to sinus rhythm in patients with preserved ventricular function. Medicina (B. Aires) [online]. 2011, vol.71, n.2, pp. 146-150. ISSN 0025-7680.

Our objective was to evaluate changes of N-terminal pro-BNP (NT-Pro-BNP) levels at baseline and after restoration to sinus rhythm in hemodynamic stable patients with lone atrial fibrillation (LAF) with preserved left ventricular function. NT-Pro-BNP levels were obtained before and after cardioversion in thirty hemodynamic stable patients with LAF and preserved left ventricular function. At baseline levels of NT-Pro BNP levels were significatively higher than a normal control group. NTPro-BNP levels decreased significantly following cardioversion from 529 (157-1763) to 318 (98-870) pg/ml, p < 0.0001. Decreasing of N-terminal pro-BNP concentrations was observed after any mode of cardioversion: electrical or pharmacologic, 345 (153-1151) pg/ml to 169 (86-407) pg/ml, p: 0.02 and from 1624 (541-4010) pg/ml to 856 (532-1160) pg/ml, p < 0.001, respectively. N-terminal pro-BNP decreasing was observed mainly in patients with length of LAF longer than 8 hours: 1289 (338-2103) to 410 (169-905) pg/ml, p < 0.001 but no difference was detected when such length was less than 8 hours: 274 (137-2300) to 286 (82-1440), p = NS. Our study showed that baseline levels of NT-pro-BNP decreased shortly after reversion of patients with LAF to sinus rhythm. This performance occurs predominantly in patients with LAF length of at least eight hours.

Palabras llave : Atrial fibrillation; Cardioversion; NT-Pro-BNP.

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