Eighteen-month outcome of pulmonary valve stent implantation by direct right ventricle puncture: An animal study Gang-Jun Zong, MD, PhD, Yuan Bai, MD,

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Presentation transcript:

Eighteen-month outcome of pulmonary valve stent implantation by direct right ventricle puncture: An animal study Gang-Jun Zong, MD, PhD, Yuan Bai, MD, Ming-Biao Gu, MD, Hai-Bin Jiang, MD, Hong Wu, MD, PhD, Xian-Xian Zhao, MD, PhD, Yong- Wen Qin, MD, PhD The Journal of Thoracic and Cardiovascular Surgery Volume 141, Issue 2, Pages 518-522 (February 2011) DOI: 10.1016/j.jtcvs.2009.08.065 Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Pulmonary valve stent construction, A, Anterior view of pulmonary valve stent. B, Lateral view of pulmonary valve stent. The Journal of Thoracic and Cardiovascular Surgery 2011 141, 518-522DOI: (10.1016/j.jtcvs.2009.08.065) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Valved stent completely crimped into a 14F sheath. The Journal of Thoracic and Cardiovascular Surgery 2011 141, 518-522DOI: (10.1016/j.jtcvs.2009.08.065) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Valved stent contracted and relaxed with RVOT contraction. A, One implanted stent contracted with RVOT contraction. The diameter of the stent neck is similar to the diameter of the pigtail catheter tip. B, The same stent relaxed with RVOT relaxation. The diameter of the stent neck is bigger than the diameter of the pigtail catheter tip. The Journal of Thoracic and Cardiovascular Surgery 2011 141, 518-522DOI: (10.1016/j.jtcvs.2009.08.065) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 Anatomic study performed postoperatively. A, No hematoma or bleeding was identified in the pocket of the right ventricle in the sheep 12 hours postoperatively. B, Anatomic study performed 18 months postoperatively revealed a normal tissue covering over the sutures in the right ventricle. C, Stents were covered by a layer of endothelial tissue. The Journal of Thoracic and Cardiovascular Surgery 2011 141, 518-522DOI: (10.1016/j.jtcvs.2009.08.065) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 5 Multislice computed tomography scan further confirmed the desired position of the valved stent 18 months after implantation. The Journal of Thoracic and Cardiovascular Surgery 2011 141, 518-522DOI: (10.1016/j.jtcvs.2009.08.065) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 6 A and B, H&E-stained pulmonary tissues containing nitinol wires and surrounding tissues sliced with a gold stainless-steel microtome blade (×40) show a smooth surface of nitinol wire. C, H&E-stained pulmonary artery wall (×200) shows non-tear phenomenon of the vascular wall. D, H&E-stained pulmonary artery tissue without nitinol wire shows no significant infiltration of inflammatory cells. The Journal of Thoracic and Cardiovascular Surgery 2011 141, 518-522DOI: (10.1016/j.jtcvs.2009.08.065) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions