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  • Title: Assessment of atrial conduction time in patients with familial Mediterranean fever.
    Author: Acar G, Akcay A, Sayarlioglu M, Sokmen A, Sokmen G, Koroglu S, Gunduz M, Ispiroglu M, Tuncer C.
    Journal: Pacing Clin Electrophysiol; 2009 Mar; 32(3):308-13. PubMed ID: 19272059.
    Abstract:
    BACKGROUND: Increased inflammatory activity is known to be a pathophysiologic characteristic of atrial fibrillation. Familial Mediterranean fever (FMF) is a disease characterized by recurrent and sustained increased inflammatory activity. Atrial conduction abnormalities in these patients have not been investigated in terms of P-wave duration, P-wave dispersion (Pd), and atrial electromechanical delay measured by tissue Doppler echocardiography (TDE). We aimed to assess atrial conduction time in patients with FMF. METHODS: A total of 33 patients with FMF (13 males/20 females, 28.4 +/- 12.5 years), and 33 controls (13 males/20 females, 28.5 +/- 12.1 years) were included. Atrial electromechanical coupling (PA) and intra- and interatrial electromechanical delay were measured with TDE. From the 12-lead electrocardiogram Pd was calculated. RESULTS: Atrial electromechanical coupling at the left lateral mitral annulus (PA lateral) was significantly higher in FMF patients (58.0 +/- 9.0 vs 51.0 +/- 5.8, P < 0.001). Interatrial (PA lateral-PA tricuspid) and intraatrial electromechanical delay (PA septum-PA tricuspid) were significantly longer in FMF patients (21.3 +/- 7.4 vs 12.9 +/- 4.6, P < 0.001 and 4.7 +/- 5.5 vs 2.1 +/- 1.7, P = 0.01, respectively). Also, Pd and maximum P-wave duration were significantly higher in FMF patients (42.8 +/- 7.9 vs 35.3 +/- 6.1, P < 0.001 and 98.6 +/- 9.0 vs 93.1 +/- 8.5, P = 0.01, respectively). A positive correlation was detected between interatrial electromechanical delay and Pd (r = 0.622, P < 0.001). Plasma level of C-reactive protein (CRP) correlated with interatrial electromechanical delay and Pd (r = 0.733, P < 0.001; and r = 0.427, P < 0.001, respectively). CONCLUSION: This study shows that atrial electromechanical delay and Pd are prolonged in FMF patients. Atrial electromechanical delay is closely associated with Pd and plasma level of CRP.
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