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Transient Pseudorestrictive Pattern of Transmitral Flow Velocity Curve in Patients with Paroxysmal Atrial Fibrillation
Author(s) -
Motoki Hirohiko,
Koyama Jun,
Tomita Takeshi,
Aizawa Kazunori,
Kasai Hiroki,
Koshikawa Megumi,
Izawa Atsushi,
Kumazaki Setsuo,
Takahashi Masafumi,
Ikeda Uichi
Publication year - 2011
Publication title -
echocardiography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 62
eISSN - 1540-8175
pISSN - 0742-2822
DOI - 10.1111/j.1540-8175.2010.01312.x
Subject(s) - cardiology , medicine , atrial fibrillation , sinus rhythm , diastole , doppler echocardiography , mitral valve , atrium (architecture) , fibrillation , blood pressure
Background: Early diastolic velocity of the mitral annulus and transmitral flow propagation velocity are reported as more reliable determinants of left ventricular diastolic function in patients with atrial fibrillation than are transmitral Doppler indices. This study aimed to test the hypothesis that transmitral flow curve shows pseudorestrictive pattern during rate‐controlled atrial fibrillation. Methods: Thirteen paroxysmal atrial fibrillation patients were monitored for three phases: before atrial fibrillation, during atrial fibrillation, and after the recovery of atrial fibrillation to sinus rhythm. Standard two‐dimensional, color flow, and tissue Doppler echocardiography were performed. We compared the indices of left ventricular diastolic function among the three phases. Results: The early diastolic velocity of transmitral flow increased significantly during atrial fibrillation (before, 0.76 ± 0.19 m/sec; during, 0.86 ± 0.20 m/sec; after recovery to sinus rhythm, 0.73 ± 0.16 m/sec; P < 0.01). The deceleration time of early transmitral diastolic wave decreased during atrial fibrillation (182.5 ± 39.6 ms; 149.1 ± 38.7 ms; 184.0 ± 44.5 ms, respectively, P < 0.01). The early diastolic velocity of the mitral annulus increased during atrial fibrillation (5.37 ± 1.31 cm/sec; 7.29 ± 1.25 cm/sec; 5.37 ± 1.32 cm/sec; respectively, P < 0.01). The transmitral propagation velocity did not change significantly during atrial fibrillation. Conclusion: Although conventional Doppler indices showed abnormal relaxation pattern, left ventricular diastolic function was preserved during rate‐controlled atrial fibrillation, as determined from early diastolic velocity of the mitral annulus and transmitral flow propagation velocity. (Echocardiography 2011;28:289‐297)