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- Title
Transient Pseudorestrictive Pattern of Transmitral Flow Velocity Curve in Patients with Paroxysmal Atrial Fibrillation.
- Authors
Motoki, Hirohiko; Koyama, Jun; Tomita, Takeshi; Aizawa, Kazunori; Kasai, Hiroki; Koshikawa, Megumi; Izawa, Atsushi; Kumazaki, Setsuo; Takahashi, Masafumi; Ikeda, Uichi
- Abstract
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)
- Subjects
ANALYSIS of variance; ATRIAL fibrillation; BLOOD flow measurement; COMPUTER software; DIASTOLE (Cardiac cycle); DOPPLER echocardiography; HEMODYNAMICS; PROBABILITY theory; STATISTICS; DATA analysis; CONTINUING education units; REPEATED measures design
- Publication
Echocardiography, 2011, Vol 28, Issue 3, p289
- ISSN
0742-2822
- Publication type
Article
- DOI
10.1111/j.1540-8175.2010.01312.x