Quantification of thermal spread and burst pressure after endoscopic vessel harvesting: A comparison of 2 commercially available devices Alvaro Rojas-Pena,

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Presentation transcript:

Quantification of thermal spread and burst pressure after endoscopic vessel harvesting: A comparison of 2 commercially available devices Alvaro Rojas-Pena, MD, Kelly L. Koch, BS, Holden D. Heitner, BS, Candice M. Hall, LVT, Ingrid L. Bergin, VMD, Keith E. Cook, PhD The Journal of Thoracic and Cardiovascular Surgery Volume 142, Issue 1, Pages 203-208 (July 2011) DOI: 10.1016/j.jtcvs.2010.09.055 Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Measurement of the maximal length of thermal spread. A, Maximal longitudinal distance of coagulation necrosis from the cauterized end of SA samples was measured (dashed arrow, see text for details). The extent of damage to the adventitia and tunica media (bracket) corresponded with the extent of endothelial damage of the tunica intima (short arrow). (Hematoxylin and eosin stain, original magnification 200×.) B, Representative blood vessel with thermal damage affecting predominantly the tunica adventitia (bracket). C, Representative blood vessel with thermal damage affecting the 3 vascular layers: tunica adventitia, media, and intima (bracket). (Hematoxylin and eosin stain, original magnification 100×.) The Journal of Thoracic and Cardiovascular Surgery 2011 142, 203-208DOI: (10.1016/j.jtcvs.2010.09.055) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Burst pressure test schematic. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 203-208DOI: (10.1016/j.jtcvs.2010.09.055) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Extent of thermal spread in saphenous artery (SA) conduits by using each endoscopic vessel harvesting (EVH) system. The number of arterial conduits experiencing a specific range of thermal spread with the VirtuoSaph (A) and VASOVIEW 6 (B) EVH systems is shown. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 203-208DOI: (10.1016/j.jtcvs.2010.09.055) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 Extent of thermal spread in superficial epigastric vein (SEV) conduits by using each endoscopic vessel harvesting (EVH) system. The number of venous conduits experiencing a specific range of thermal spread with the VirtuoSaph (A) and VASOVIEW 6 (B) EVH systems is shown. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 203-208DOI: (10.1016/j.jtcvs.2010.09.055) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 5 Burst pressure in saphenous artery (SA) and superficial epigastric vein (SEV) conduits with each endoscopic vessel harvesting (EVH) system. The average burst pressure obtained in arterial and venous conduits in each harvester group is shown. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 203-208DOI: (10.1016/j.jtcvs.2010.09.055) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions