The sandwich plug technique: Simple, effective, and rapid closure of a mechanical aortic valve prosthesis at left ventricular assist device implantation

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Presentation transcript:

The sandwich plug technique: Simple, effective, and rapid closure of a mechanical aortic valve prosthesis at left ventricular assist device implantation William E. Cohn, MD, O.H. Frazier, MD The Journal of Thoracic and Cardiovascular Surgery Volume 142, Issue 2, Pages 455-457 (August 2011) DOI: 10.1016/j.jtcvs.2010.11.003 Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Felt circular patch is fashioned with diameter slightly larger than that of implanted mechanical valve, and line is drawn along diameter, after which 2 pledgeted Ti-Cron sutures are placed through patch such that all 4 sutures pass through line. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 455-457DOI: (10.1016/j.jtcvs.2010.11.003) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Second circular felt patch is fashioned slightly larger than first patch, and third rectangular piece of felt is attached to it with 4 interrupted sutures. Two large vascular Weck Hemoclips are secured to rectangular piece of felt as shown. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 455-457DOI: (10.1016/j.jtcvs.2010.11.003) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Second line is drawn down long axis of rectangular piece of felt. All 4 ends of 2 previously placed pledgeted Ti-Cron sutures are passed through second patch such that they exit through line. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 455-457DOI: (10.1016/j.jtcvs.2010.11.003) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 After mechanical valve leaflets are pivoted open, first circular patch and 2 pledgets are passed through central orifice. Sutures are manipulated to allow patch to drop into left ventricle, then lightly tensed to pull patch up against underside of valve and pivot leaflets closed. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 455-457DOI: (10.1016/j.jtcvs.2010.11.003) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 5 Second circular patch is “parachuted” into position, and 2 sutures are tied securely. Line drawn on rectangular piece will align with line of mechanical leaflet closure. Valve is rapidly and effectively closed such that leaflets cannot pivot, and entire prosthesis is covered with felt. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 455-457DOI: (10.1016/j.jtcvs.2010.11.003) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 6 In this figure, outer patch has been removed to show geometric relationship between large Weck Hemoclips and mechanical valve leaflets. Suture tension results in upward traction on straight inner leaflet edges by pledgets and downward pressure on curved outer edges by Hemoclips, resulting in pinning of valve leaflets in closed position. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 455-457DOI: (10.1016/j.jtcvs.2010.11.003) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 7 Photographs of aortic (A) and ventricular (B) aspects of left ventricular outflow tract taken at cardiac transplantation show felt sandwich in good position without evidence of thrombus. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 455-457DOI: (10.1016/j.jtcvs.2010.11.003) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions