Clinical analysis of concomitant valve replacement and bipolar radiofrequency ablation in 191 patients.

Objective: The study objective was to evaluate the safety and efficacy of concomitant bipolar radiofrequency ablation and heart valve replacement in patients with rheumatic heart disease and atrial fibrillation.

Methods: A total of 191 patients with rheumatic heart disease and chronic atrial fibrillation underwent valve replacement with concomitant bipolar radiofrequency ablation. There were 78 male and 113 female patients with a mean age of 46.

[Doppler echocardiographic assessment of CarboMedics prosthesis in patients with mitral valve replacement].

Objective: To evaluate the CarboMedics (CM) prosthesis function two years after mitral valve replacement, and to compare the effective orifice area (EOA) calculated by pressure half-time (PHT) method and continuity method (CON).

Methods: Forty nine patients who underwent isolated mitral valve replacement with a CM prosthesis were recruited in this study, which included 13 cases of 25 mm CM prosthesis and 36 cases of 27 mm CM prosthesis. Two years after the mitral valve replacement, transthoracic echocardiography (TTE) was performed, measuring left ventricular ejection fraction (LVEF), stroke volume mean gradient (SV), PHT, peak early mitral diastolic velocity (E velocity), mean gradient (MG), time-velocity integral of left ventricular outflow tract/time-velocity integral of mitral valve prosthesis (TVI(MVP)/TVI(LVOT)).

[Impact of tricuspid annuloplasty on changes of right atrioventricular diameter and annulus in patients with mitral valve replacement].

Objective: To observe changes of right atrioventricular diameter and annulus after mitral valve replacement (MVR) in patients with and without tricuspid annuloplasty.

Methods: A total of 112 patients who underwent MVR surgery from April 2005 to December 2006 were recruited in this study. The patients were divided into two groups.

[Tricuspid valve replacement and anticoagulation therapy: a report of 70 cases].

Objective: To evaluate the operative indication, the choice of valve prostheses, and the method of anticoagulation therapy of tricuspid valve replacement (TVR).

Methods: From May 1998 to January 2008, 70 patients underwent TVR. There were 59 cases of rheumatic heart diseases.