Sternal Stability at Different Negative Pressures During Vacuum-Assisted Closure Therapy Arash Mokhtari, MD, Rainer Petzina, MD, Lotta Gustafsson, MS,

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Presentation transcript:

Sternal Stability at Different Negative Pressures During Vacuum-Assisted Closure Therapy Arash Mokhtari, MD, Rainer Petzina, MD, Lotta Gustafsson, MS, PhD, Johan Sjögren, MD, PhD, Malin Malmsjö, MD, PhD, Richard Ingemansson, MD, PhD The Annals of Thoracic Surgery Volume 82, Issue 3, Pages 1063-1067 (September 2006) DOI: 10.1016/j.athoracsur.2006.04.085 Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

Fig 1 A 70-kg pig prepared for a sternal stability test. Arrow points to force transducor. White bars designated width and length. The Annals of Thoracic Surgery 2006 82, 1063-1067DOI: (10.1016/j.athoracsur.2006.04.085) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

Fig 2 A custom-made device for investigating sternal stability connected to a force transducer (angled arrow) and a force recorder (straight arrow). The Annals of Thoracic Surgery 2006 82, 1063-1067DOI: (10.1016/j.athoracsur.2006.04.085) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

Fig 3 Photographs of vacuum-assisted (VAC) closure settings with (VAC on) and without (VAC off) ongoing therapy at different negative pressures (−75, −125 and −175 mm Hg) in combination with different lateral forces 0, 100, 300, and 400 N. The Annals of Thoracic Surgery 2006 82, 1063-1067DOI: (10.1016/j.athoracsur.2006.04.085) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

Fig 4 Change in wound width (solid circle) and length (open circle) in millimeters (mm) without negative pressure (A), and at negative pressures of −50 (B), −75 (C), −100 (D), −125 (E), −150 (F), −175 (G), and −200 (H) mm Hg. Values are presented as means ± SEM. The Annals of Thoracic Surgery 2006 82, 1063-1067DOI: (10.1016/j.athoracsur.2006.04.085) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

Fig 5 Increase in wound edge diameter in millimeters at −75, −125, and −175 mm Hg and in an open-chest setting with lateral forces of 100, 200, and 300 newtons (N). Values are presented as means ± SEM. *p < 0.05, **p < 0.01, n.s. = non significant. The Annals of Thoracic Surgery 2006 82, 1063-1067DOI: (10.1016/j.athoracsur.2006.04.085) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions