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  • Title: [Changes in pulmonary venous and transmitral flow velocity patterns after cardioversion of atrial fibrillation].
    Author: Iuchi A, Oki T, Tabata T, Manabe K, Kageji Y, Sasaki M, Hama M, Yamada H, Fukuda N.
    Journal: J Cardiol; 1995 Jun; 25(6):317-24. PubMed ID: 7595857.
    Abstract:
    The time course of recovery of left atrial mechanical function after electrocardioversion of atrial fibrillation was examined in 25 patients with atrial fibrillation by recording pulmonary venous and transmitral flow velocities and interatrial septal motion during atrial systole within a day (16 +/- 5 hours) and ten days after cardioversion of atrial fibrillation by transesophageal and transthoracic Doppler and M-mode echocardiography. There were 6 patients with hypertension, 4 with ischemic heart disease, 2 with alcoholic heart, 5 with dilated cardiomyopathy, and 8 without underlying heart disease. The peak velocities of the atrial systolic waves of the transmitral and pulmonary venous flow velocities (A and PVA, respectively) and first systolic wave (PVS1) of pulmonary venous flow, durations of both atrial systolic waves, and amplitude of interatrial septal motion during atrial systole increased significantly ten days after cardioversion compared with those measured within a day of cardioversion in all patients except the 5 patients with dilated cardiomyopathy. Peak velocity of the second systolic wave (PVS2) of pulmonary venous flow increased, and that of the early diastolic and diastolic waves (E and PVD, respectively) of transmitral and pulmonary venous flow decreased ten days after cardioversion compared with those within a day of cardioversion. These results suggested that active atrial systolic (A and PVA) and relaxant (PVS1) parameters obtained from transmitral and pulmonary venous flow velocities are good indicators of left atrial mechanical function after cardioversion of atrial fibrillation.
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