Short and Intermediate Term Results of the ATS Heart Valve Replacement.
- Author:
Chang Young LIM
1
;
Seung Chul MOON
;
Jin Young YANG
;
Won Mo GOO
;
Dae Sik KIM
;
Gun Ho LEE
;
Hun Jae LEE
Author Information
1. Department of Thoracic and Cardiovascular Surgery, Heart Center, Pundang CHA General Hospital, Collage of Medicine, Pochon CHA University. cylimmd@cha.ac.kr
- Publication Type:Original Article
- Keywords:
Heart valve prosthesis;
Echocardiography, doppler
- MeSH:
Aortic Valve;
Carbon;
Echocardiography, Doppler;
Follow-Up Studies;
Heart Valve Prosthesis;
Heart Valves*;
Heart*;
Hemodynamics;
Humans;
International Normalized Ratio;
Mitral Valve;
Prostheses and Implants
- From:The Korean Journal of Thoracic and Cardiovascular Surgery
1999;32(11):1031-1035
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: ATS mechanical valve is a recently introduced pyrolytic carbon bileaflet prosthesis. This report is to evaluate the results of hemodynamic and anticoagulant therapy after ATS valve replacement. MATERIAL AND METHOD: From May 1995 to October 1998, 53 patients received 65 ATS prosthesis; 38 Mitral(27-33 mm), 27 Aortic(19-25 mm). 2 CABGs and 5 Tricuspid annuloplasty were taken concomitantly. The follow up period was 769 patient-months(mean 16.2+/-10.0), varied from 1 month to 39 months with 92.5% follow up rate. All patients were evaluated with Doppler echocardiography, 7-14 days after operation. RESULT: NYHA functional class was improved significantly, from 2.6+/-0.8 preoperatively to 1.3+/-0.4 postoperatively. The average value of peak and mean transvalvular pressure gradients were 25.7+/-13.5 mmHg, 12.7+/-8.3 mmHg in aortic position. In the mitral position, the average values of peak and mean transvalvular pressure gradient and valve area were 5.9+/-2.5 mmHg, 3.1+/-0.8 mmHg and 2.9+/-0.5 cm2, respectively. In the anticoagulant therapy, mean INR was 2.5+/-0.6 in mitral valve replacement and 1.9+/-0.5 in aortic valve replacement. There was no anticoagulant related complication. During that period, there were 3 hospital death(5.9%) and 1 late death(1.9%). CONCLUSION: The early clinical results of the ATS heart valve replacement is quite satisfactory, and low target INR reginmen is safe. And long term follow of hemodynamic characteristics is also necessary.
