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The Korean Journal of Medicine 2009;76(3): 311-320.
전기적 심율동전환술 후 심방세동의 재발에서 혈장 BNP의 역할
이수희, 홍영호, 김도이, 원현선, 양문석, 김태선, 서윤용, 박정배
Role of B-type natriuretic peptide in the recurrence of atrial fibrillation after electrical cardioversion
Su Hee Lee, Young Ho Hong, Do Yi Kim, Hyun Sun Won, Moon Seok Yang, Tae Sun Kim, Yun Yong Seo, Jeong Bae Park
ABSTRACT
Background/Aims:
No studies have conclusively determined whether the B-type natriuretic peptide (BNP) level measured before electrical cardioversion for atrial fibrillation (AF) is associated with the maintenance of sinus rhythm after the procedure. Therefore, we investigated whether the plasma BNP can predict AF recurrence in the short-term.
Methods:
We prospectively recruited 20 consecutive patients with persistent AF, without symptomatic congestive heart failure. The plasma BNP was measured before and after electrical cardioversion.
Results:
In all patients, AF was converted to normal sinus rhythm (NSR) after the procedure. NSR was maintained in 70.0% of the patients at 1 week and in 52.6% of the patients at 4 weeks. Of the patients with NSR at 1 week, five patients had relapsed by 4 weeks (4-week relapse group, 4WRG). The log BNP levels after cardioversion decreased significantly in all patients, except for the failed group at 1 week and the 4WRG. Multivariate analysis revealed that the maintenance of sinus rhythm was associated with body mass index at 1 week, and left atrial diameter (LAD) and left ventricular mass index (LVMI) at 4 weeks. 4WRG had a significantly higher baseline BNP. The baseline BNP was associated with the LVMI (R2=0.241, p=0.028) and tissue Doppler imaging (TDI) E' (R2=0.432, p=0.002). Conclusion: A higher plasma BNP at baseline in AF patients may help to predict the failure to maintain sinus rhythm 4 weeks after electrical cardioversion, but not the early recurrence at 1 week.
Keywords: Atrial fibrillation; B-type natriuretic peptide; Cardioversion
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