Valve Template Design and Applications
Keywords:
Valve conduit, pericardium, aortic root, valve templateAbstract
Background and Objective: To evaluate the results of autologous pericardial valve-conduit reconstruction,made with the help of metallic valve-conduit templates of various sizes specifically created for Thai patients.
Methods: Metallic valve-conduit templates were made based on the diameters of the aortic root at the levels
of the aortic annulus, the sinus of Valsalva and the sino-tubular junction derived from cine-angiography measurements
in 20 Thai subjects. The average diameters at the3 levels were to the ratios of 1 to 1.50 to 1.13, respectively. These
ratios were used in constructing valve-conduit templates of various sizes.
Results: From 2001 to 2010, ten children underwent autologous pericardial valve-conduit reconstruction and
one adult patient underwent pericardial valve replacement, using the metallic valve-conduit templates in the
reconstruction. Of the seven children and one adult who survived the immediate postoperative period, the functions
of the valves and conduits as measured by echocardiography were satisfactory. Only mild valvular regurgitation was
seen postoperatively, although the regurgitation worsened with longer follow-up.
Conclusion: Autologous pericardial valve-conduit reconstruction using metallic templates is a suitable
alternative to other types of repairs.
References
Patch reconstruction of the right ventricular outflow tract
with pulmonary valve insertion. Circulation 1981;64:154-61.
2. Duran C, Gometza B, Kumar N, Gallo R, Martin-Duran R.
Aortic valve replacement with freehand autologous
pericardium. J Thorac Cardiovasc Surg 1995;110:51-6.
3. Attanavanit S, Withurawanit W. Correction of truncus
arteriosus using a fresh autologous pericardial trileaflet valve
conduit. J Med Assoc Thai 2002;85: 380-384
4. Batista RJ, Dobrianski A, Cornazzi M Jr, Neto LT, Rocha G.
Clinical experience with stentless pericardial aortic
monopatch for aortic valve replacement. J Thorac
Cardiovasc Surg 1987;93:19-26.
5. Duran C, Kumar N, Gometza B, Halees ZA. Indications and
limitations of aortic valve reconstruction. Ann Thorac Surg
1991;52:447-54
6. Al Fagih MR, Al Kasab SM, Ashmeg A. Aortic valve repair
using bovine pericardium for cusp extension. J Thorac
Cardiovasc Surg 1988;96:760-4.
7. Attanavanich S, Khowsatit P, Withurawanit W. Correction of
absent pulmonary valve syndrome using a pericardial valved
conduit. Asian Cardiovasc Thorac Ann 2002;10:270-2.
8. Vricella LA, Coady MA, Black MD. Initial experience with a
stentless porcine bioprosthesis for right ventricular outflow
tract reconstruction in children. J Thorac Cardiovasc Surg
2003;125:727-8.
9. Hanlon JG, Suggit RW, Love JW. Pre-use intraoperative
testing of autologous tissue for valvular surgery: a proof of
concept study. J Heart Valve Dis 1999;8:614-23.
10. Srivella S, Gielchinsky I. Autogenous pericardial valve conduit
for right ventricular outflow tract reconstruction. J Card Surg
2008;23:60-2.
Downloads
Published
How to Cite
Issue
Section
License
Articles must be contributed solely to The Thai Journal of Surgery and when published become the property of the Royal College of Surgeons of Thailand. The Royal College of Surgeons of Thailand reserves copyright on all published materials and such materials may not be reproduced in any form without the written permission.