Does the type of suture technique affect the fluid-dynamic performance of bioprostheses implanted in small aortic roots? Results from an in vitro study

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Presentation transcript:

Does the type of suture technique affect the fluid-dynamic performance of bioprostheses implanted in small aortic roots? Results from an in vitro study Giordano Tasca, MD, Riccardo Vismara, PhD, Gianfranco Beniamino Fiore, PhD, Claudia Romagnoni, MD, Alberto Redaelli, PhD, Carlo Antona, MD, Amando Gamba, MD The Journal of Thoracic and Cardiovascular Surgery Volume 149, Issue 3, Pages 912-918 (March 2015) DOI: 10.1016/j.jtcvs.2014.10.096 Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 A, The mock loop scheme; (B) a prosthesis implanted in the ARU housed in the holder. Part, Arterial pressure; HS, high-speed; ARFU, aortic root functional unit; Pven, pressure measured at the ventricle; Pao, pressure measured at the aortic valve. The Journal of Thoracic and Cardiovascular Surgery 2015 149, 912-918DOI: (10.1016/j.jtcvs.2014.10.096) Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Mean (lower curves) and peak (upper curves) pressure drop at each level of SV. SIS, Simple interrupted suture; MSP, (noneverting) mattress suture with pledgets; SV, stroke volume. The Journal of Thoracic and Cardiovascular Surgery 2015 149, 912-918DOI: (10.1016/j.jtcvs.2014.10.096) Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Mean pressure drops according to prosthesis size (19 mm and 21 mm) and type of suture adopted. SIS, Simple interrupted suture; MSP, (noneverting) mattress suture with pledgets; SV, stroke volume. The Journal of Thoracic and Cardiovascular Surgery 2015 149, 912-918DOI: (10.1016/j.jtcvs.2014.10.096) Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 Left: A 21-mm size prosthesis implanted with SIS. Right: The same prosthesis implanted with MSP. Arrows point to the tissue gathered underneath the valve. The Journal of Thoracic and Cardiovascular Surgery 2015 149, 912-918DOI: (10.1016/j.jtcvs.2014.10.096) Copyright © 2015 The American Association for Thoracic Surgery Terms and Conditions