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Jun Fujii - One of the best experts on this subject based on the ideXlab platform.

  • Sustained hemoconcentration in patients with Chronic Atrial Fibrillation, a potential risk for stroke and thromboembolic complications. A retrospective study.
    Japanese Heart Journal, 1998
    Co-Authors: Hiroko Yamada, Terunao Ashida, Takao Sugiyama, Jun Fujii
    Abstract:

    Hemoconcentration has been observed during paroxysms of Atrial Fibrillation and at the early stage of Chronic Atrial Fibrillation. The present study was designed to determine how long the hemoconcentration continues after complete transition to Atrial Fibrillation from sinus rhythm by retrospective long-term observation of 9 patients with Chronic Atrial Fibrillation and 18 age-gender matched control patients. Hematocrit levels significantly increased with transition to Chronic Atrial Fibrillation from sinus rhythm (from 44.88±0.87% to 46.87±1.12%, p

  • Prediction of Transition to Chronic Atrial Fibrillation in Patients With Paroxysmal Atrial Fibrillation
    Circulation, 1998
    Co-Authors: Hironosuke Sakamoto, Masahiko Kurabayashi, Ryozo Nagai, Jun Fujii
    Abstract:

    To the Editor: We read with great interest the recent report of Abe et al1 demonstrating that P-wave–triggered signal-averaged electrocardiography may be useful to predict the transition to Chronic Atrial Fibrillation in patients with paroxysmal Atrial Fibrillation. In their study, although sex, age, and presence of organic heart disease were not associated with an increased risk for the transition to Chronic Atrial Fibrillation, patients with the abnormality of a P-wave–triggered signal-averaged ECG had an 11-fold greater risk for Chronic Atrial Fibrillation than those without the abnormality. Echocardiographically, left Atrial dimension in patients with Chronic Atrial Fibrillation was larger than that in patients with paroxysmal Atrial Fibrillation (40.5 versus 36.4 mm, P

  • Prediction of Transition to Chronic Atrial Fibrillation in Patients With Paroxysmal Atrial Fibrillation
    Circulation, 1998
    Co-Authors: Hironosuke Sakamoto, Masahiko Kurabayashi, Ryozo Nagai, Jun Fujii
    Abstract:

    To the Editor: We read with great interest the recent report of Abe et al1 demonstrating that P-wave–triggered signal-averaged electrocardiography may be useful to predict the transition to Chronic Atrial Fibrillation in patients with paroxysmal Atrial Fibrillation. In their study, although sex, age, and presence of organic heart disease were not associated with an increased risk for the transition to Chronic Atrial Fibrillation, patients with the abnormality of a P-wave–triggered signal-averaged ECG had an 11-fold greater risk for Chronic Atrial Fibrillation than those without the abnormality. Echocardiographically, left Atrial dimension in patients with Chronic Atrial Fibrillation was larger than that in patients with paroxysmal Atrial Fibrillation (40.5 versus 36.4 mm, P

Yuichiro Matsuura - One of the best experts on this subject based on the ideXlab platform.

  • Left Atrial tachycardia after right Atrial separation for Chronic Atrial Fibrillation with Atrial septal defects.
    Pacing and clinical electrophysiology : PACE, 1999
    Co-Authors: Taijiro Sueda, Katsuhiko Imai, Hideyuki Nagata, Kazumasa Orihashi, Yuichiro Matsuura
    Abstract:

    A right Atrial separation procedure was performed for the ablation of Chronic Atrial Fibrillation in four cases, concomitant with the repair of the Atrial septal defect. After the operation, Chronic Atrial Fibrillation disappeared in three of them and left Atrial tachycardia occurred in the other one. Left Atrial tachycardia is an arrhythmia encountered after a right Atrial separation procedure.

  • Right Atrial separation for Chronic Atrial Fibrillation with Atrial septal defects.
    The Annals of thoracic surgery, 1997
    Co-Authors: Taijiro Sueda, Hideyuki Nagata, Kazumasa Orihashi, Kenji Okada, Shinnji Hirai, Yuichiro Matsuura
    Abstract:

    A right Atrial separation procedure was performed for the ablation of Atrial Fibrillation during the concomitant repair of an Atrial septal defect. This procedure consisted of a Y-shaped incision in the right atrium, followed by cryoablation of the tricuspid annulus and the Atrial septum without any procedures performed on the left atrium. This is a simple and effective method for the elimination of Chronic Atrial Fibrillation associated with Atrial septal defects in adults.

  • Left Atrial isolation for Chronic Atrial Fibrillation caused by mitral valvular stenosis and regurgitation
    [Zasshi] [Journal]. Nihon Kyobu Geka Gakkai, 1994
    Co-Authors: Sueda T, Kazumasa Orihashi, Hiroo Shikata, Nakashima Y, Nomimura T, Yuichiro Matsuura
    Abstract:

    Surgical isolation of the left atrium was performed for the treatment of Chronic Atrial Fibrillation secondary to mitral valvular disease in a 65-year-old woman who underwent mitral valvular replacement. Left Atrial isolation was simple procedure, prolonging the usual paraseptal atriotomy toward the both mitral valvular commissures anteriorly and posteriorly. The incision was conducted two centimeters apart from the mitral valve annulus, and cryoablation was added at the edges to ensure isolation of the residual left atrium. We suggest performing this simple procedure in patients with Chronic Atrial Fibrillation undergoing mitral valvular replacement, in whom correction of irregular beat and compromised hemodynamics can be obtained.

  • Application of extended transseptal approach for a patient with Chronic Atrial Fibrillation caused by mitral stenosis and tricuspid regurgitation
    [Zasshi] [Journal]. Nihon Kyobu Geka Gakkai, 1994
    Co-Authors: Sueda T, Kazumasa Orihashi, Hiroo Shikata, Norimasa Mitsui, Masafumi Sueshiro, Yuichiro Matsuura
    Abstract:

    A 45-year-old female of mitral valvular disease with Chronic Atrial Fibrillation was referred to our hospital. She had received previous closed mitral commissurotomy (12 years ago) and open mitral commissurotomy combined with aortic valve replacement (6 years ago). An echocardiogram showed restenosis and regurgitation of the mitral valve (valve area 1.2 cm2 by B-mode) and severe regurgitation of the tricuspid valve. She also complained of Chronic Atrial Fibrillation since 35 years old. Mitral valve replacement with CarboMedics bileaflet valve (25 mm) and tricuspid annuloplasty by DeVega procedure was undergone via an extended transseptal approach and cryoablastion was added to the posterior wall of the left atrium along the rim of the left pulmonary veins and around the left Atrial appendage for ablation of Chronic Atrial Fibrillation. After completion of surgery, Atrial Fibrillation disappeared. Post operative echocardiogram showed apparent Atrial kick of both atriumns in the inflow pattern of both ventricles. The patient continues to be well with normal sinus rhythm for 6 months after surgery. An extended transseptal approach is useful in mitral reoperation, in addition, it can be applicable for the surgery of Chronic Atrial Fibrillation.

Taijiro Sueda - One of the best experts on this subject based on the ideXlab platform.

Kazumasa Orihashi - One of the best experts on this subject based on the ideXlab platform.

  • Pulmonary vein orifice isolation for elimination of Chronic Atrial Fibrillation
    The Annals of thoracic surgery, 2001
    Co-Authors: Taijiro Sueda, Katsuhiko Imai, Kazumasa Orihashi, Masanobu Watari, Kenji Okada
    Abstract:

    We present a 61-year-old woman with Chronic Atrial Fibrillation (AF) associated with mitral valve disease. Chronic AF was successfully treated by simple isolation of pulmonary vein orifices concomitant with mitral valve replacement. AF did not recur during a subsequent follow-up period of 12 months. This procedure has numerous advantages, such as short duration of surgical time, no requirement for cryoablation, and a reduced risk of coronary artery injury.

  • Left Atrial tachycardia after right Atrial separation for Chronic Atrial Fibrillation with Atrial septal defects.
    Pacing and clinical electrophysiology : PACE, 1999
    Co-Authors: Taijiro Sueda, Katsuhiko Imai, Hideyuki Nagata, Kazumasa Orihashi, Yuichiro Matsuura
    Abstract:

    A right Atrial separation procedure was performed for the ablation of Chronic Atrial Fibrillation in four cases, concomitant with the repair of the Atrial septal defect. After the operation, Chronic Atrial Fibrillation disappeared in three of them and left Atrial tachycardia occurred in the other one. Left Atrial tachycardia is an arrhythmia encountered after a right Atrial separation procedure.

  • Right Atrial separation for Chronic Atrial Fibrillation with Atrial septal defects.
    The Annals of thoracic surgery, 1997
    Co-Authors: Taijiro Sueda, Hideyuki Nagata, Kazumasa Orihashi, Kenji Okada, Shinnji Hirai, Yuichiro Matsuura
    Abstract:

    A right Atrial separation procedure was performed for the ablation of Atrial Fibrillation during the concomitant repair of an Atrial septal defect. This procedure consisted of a Y-shaped incision in the right atrium, followed by cryoablation of the tricuspid annulus and the Atrial septum without any procedures performed on the left atrium. This is a simple and effective method for the elimination of Chronic Atrial Fibrillation associated with Atrial septal defects in adults.

  • Left Atrial isolation for Chronic Atrial Fibrillation caused by mitral valvular stenosis and regurgitation
    [Zasshi] [Journal]. Nihon Kyobu Geka Gakkai, 1994
    Co-Authors: Sueda T, Kazumasa Orihashi, Hiroo Shikata, Nakashima Y, Nomimura T, Yuichiro Matsuura
    Abstract:

    Surgical isolation of the left atrium was performed for the treatment of Chronic Atrial Fibrillation secondary to mitral valvular disease in a 65-year-old woman who underwent mitral valvular replacement. Left Atrial isolation was simple procedure, prolonging the usual paraseptal atriotomy toward the both mitral valvular commissures anteriorly and posteriorly. The incision was conducted two centimeters apart from the mitral valve annulus, and cryoablation was added at the edges to ensure isolation of the residual left atrium. We suggest performing this simple procedure in patients with Chronic Atrial Fibrillation undergoing mitral valvular replacement, in whom correction of irregular beat and compromised hemodynamics can be obtained.

  • Application of extended transseptal approach for a patient with Chronic Atrial Fibrillation caused by mitral stenosis and tricuspid regurgitation
    [Zasshi] [Journal]. Nihon Kyobu Geka Gakkai, 1994
    Co-Authors: Sueda T, Kazumasa Orihashi, Hiroo Shikata, Norimasa Mitsui, Masafumi Sueshiro, Yuichiro Matsuura
    Abstract:

    A 45-year-old female of mitral valvular disease with Chronic Atrial Fibrillation was referred to our hospital. She had received previous closed mitral commissurotomy (12 years ago) and open mitral commissurotomy combined with aortic valve replacement (6 years ago). An echocardiogram showed restenosis and regurgitation of the mitral valve (valve area 1.2 cm2 by B-mode) and severe regurgitation of the tricuspid valve. She also complained of Chronic Atrial Fibrillation since 35 years old. Mitral valve replacement with CarboMedics bileaflet valve (25 mm) and tricuspid annuloplasty by DeVega procedure was undergone via an extended transseptal approach and cryoablastion was added to the posterior wall of the left atrium along the rim of the left pulmonary veins and around the left Atrial appendage for ablation of Chronic Atrial Fibrillation. After completion of surgery, Atrial Fibrillation disappeared. Post operative echocardiogram showed apparent Atrial kick of both atriumns in the inflow pattern of both ventricles. The patient continues to be well with normal sinus rhythm for 6 months after surgery. An extended transseptal approach is useful in mitral reoperation, in addition, it can be applicable for the surgery of Chronic Atrial Fibrillation.

Torbjörn Lundström - One of the best experts on this subject based on the ideXlab platform.

  • Improved Ventilatory Response to Exercise after Cardioversion of Chronic Atrial Fibrillation to Sinus Rhythm
    Chest, 1992
    Co-Authors: Torbjörn Lundström, Östen Karlsson
    Abstract:

    The purpose of this study was to assess hemodynamic and respiratory measures of submaximal and maximal exercise performance in patients with Chronic Atrial Fibrillation, before and one month after cardioversion to sinus rhythm. Restoration of sinus rhythm (n = 16) produced significant reductions in resting and exercise heart rates, 14 percent to 20 percent (p

  • Differential effects of xamoterol and verapamil on ventricular rate regulation in patients with Chronic Atrial Fibrillation
    American heart journal, 1992
    Co-Authors: Torbjörn Lundström, Elisabeth Moor, Lars Rydén
    Abstract:

    In a placebo-controlled study the effects on ventricular rate regulation and exercise performance of xamoterol, 100 mg two times a day and 200 mg two times a day, and slow-release verapamil, 240 mg once a day, were assessed in 21 patients with Chronic Atrial Fibrillation. The mean ventricular rate from noon to 6:00 pm was 101 ± 20 beats/min with placebo, 95 ± 17 beats/min with xamoterol 100 mg two times a day (not significant), 90 ± 16 beats/min with xamoterol 200 mg two times a day (p 2.0 seconds was increased by verapamil (p < 0.05). All active treatments reduced exercise ventricular rates (p < 0.001), but the decrease was more pronounced with verapamil. The anaerobic threshold was reached significantly earlier with verapamil than with placebo (72 ± 32 W vs 79 ± 37 W; p < 0.01). Xamoterol is preferable to verapamil for treatment of patients with Chronic Atrial Fibrillation who exhibit both bradycardia at rest and excessive tachycardia during exercise. In the present dosage verapamil may cause excessive bradycardia and impairment of submaximal exercise performance in patients with Chronic Atrial Fibrillation.