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percutaneous establishment of tricuspid regurgitation： an experimental model for transcatheter tricuspid valve replacement

引用

Chinese Medical Journal 2010年第7期123卷 806-809页

作者： BAI Yuan CHEN Hai-yan ZONG Gang-jun JIANG Hai-bing LI Wei-ping WU Hong ZHAO Xian-xian QIN Yong-wen Department of Cardiology Changhai Hospital Second Military Medical University Shanghai 200433China Department of Cardiology Changzheng Hospital Second Military Medical University Shanghai 200003 China Department of Cardiology Changhai Hospital Second Military Medical University Shanghai 200433China Department of Ultrasonography Changhai Hospital Second Military Medical University Shanghai 200433China

Background Valve replacement or repair Is recommended in patients with tricuspid regurgitation when deterioration of their clinical status occurs as a consequence of right ventricular dysfunction. percutaneous valve replacement was developed in recent years. To investigate the feasibility, effectiveness and long-term results of percutaneous tricuspid valve replacement, an experimental model with tricuspid regurgitation is needed. We developed a simple and reproducible percutaneous approach for the creation of tricuspid regurgitation in *** A specially designed grasping forceps were used to grasp chordae tendineae or the tricuspid valve leaflets through a catheter. Transcatheter creation of tricuspid regurgitation was performed on 7 healthy sheep. These sheep were followed up shortly after the procedure and at 6th month post-procedure with echocardiography. Additionally, all the sheep were sacrificed for anatomic evaluation at 6th month after the *** Creation of tricuspid regurgitation was successfully accomplished in all sheep. Necropsy confirmed that damage was done to the tricuspid valve apparatus in all animals （tearing of the anterior leaflet of the tricuspid valve in five animals and posterior leaflet of the tricuspid valve in two animals）. At the six-month follow-up, there was no significant increase in the right ventricle dimension and ejection fraction measured by echocardiography. Autopsy examinations demonstrated the tearing of tricuspid valve *** The creation of an animal model of tricuspid regurgitation via a percutaneous approach using forceps to sever one or more tricuspid leaflets is feasible and will allow investigation of devices designed replace the tricuspid valve via a percutaneous approach. Despite significant tricuspid regurgitation, the hemodynamics did not change during the follow-up period in this model.

关键词： tricuspid regurgitation percutaneous, animal model

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