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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 on theme: "Sternal Stability at Different Negative Pressures During Vacuum-Assisted Closure Therapy  Arash Mokhtari, MD, Rainer Petzina, MD, Lotta Gustafsson, MS,"— Presentation transcript:

1 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 (September 2006) DOI: /j.athoracsur Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

2 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  , DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

3 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  , DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

4 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  , DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

5 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  , DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

6 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  , DOI: ( /j.athoracsur ) Copyright © 2006 The Society of Thoracic Surgeons Terms and Conditions

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