Vacuum-assisted closure in cardiac surgery - clinical outcome and vascular effects

Research output: ThesisDoctoral Thesis (compilation)

Abstract

The aim of this research was to clinically and experimentally evaluate the use of vacuum-assisted closure in poststernotomy mediastinitis after cardiac surgery. Vacuum-assisted closure (VAC) is a new wound-healing therapy based on the application of a local negative pressure to the wound. New techniques for treating poststernotomy mediastinitis are needed since conventional techniques have an unsatisfactorily high mortality rate and are associated with high morbidity. It was concluded that VAC in poststernotomy mediastinitis results in a lower mortality rate and a lower rate of recurrent infection compared to conventional treatment. The long-term survival after VAC-treated mediastinitis following isolated coronary artery bypass grafting (CABG) was similar to the long-term survival in CABG without mediastinitis. Obesity, diabetes mellitus, low left ventricular ejection fraction, renal failure, and three-vessel disease were identified as independent risk factors for developing mediastinitis after isolated CABG. It was shown that VAC can be applied without impairment of the central hemodynamics in a sternotomy wound model. It was also shown that the application of VAC for 12 hours does not induce perforation or dissection of porcine femoral arteries. However, the endothelin-receptor-mediated vasoconstriction was enhanced, together with more efficacious endothelium-dependent vasodilatation.

In conclusion, the clinical results when using VAC in poststernotomy mediastinitis were superior to conventional treatment, both in the short and the long term. The experimental results indicate that VAC can be used safely without impairment of central hemodynamics or damage to the blood vessels.
Original languageEnglish
QualificationDoctor
Awarding Institution
  • Thoracic Surgery
Supervisors/Advisors
  • Ingemansson, Richard, Supervisor
Award date2005 May 19
Publisher
ISBN (Print)91-85439-35-5
Publication statusPublished - 2005

Bibliographical note

Defence details

Date: 2005-05-19
Time: 13:00
Place: Segerfalkssalen, Wallenberg Neurocenter, BMC

External reviewer(s)

Name: Ivert, Torbjörn
Title: Associate Professor
Affiliation: Department of Cardiothoracic Surgery, Karolinska University Hospital, Stockholm, Sweden

---


<div class="article_info">J Sjögren, R Gustafsson, J Nilsson, M Malmsjö and R Ingemansson. <span class="article_issue_date">2005</span>. <span class="article_title">Clinical Outcome after Poststernotomy Mediastinitis: Vacuum-Assisted Closure Therapy versus Conventional Treatment.</span> <span class="journal_series_title">The Annals of Thoracic Surgery</span>, (inpress)</div>
<div class="article_info">J Sjögren, J Nilsson, R Gustafsson, M Malmsjö and R Ingemansson. <span class="article_issue_date">2005</span>. <span class="article_title">The Impact of Vacuum-Assisted Closure on Long-Term Survival after Poststernotomy Mediastinitis.</span> <span class="journal_series_title">The Annals of Thoracic Surgery</span>, (accepted)</div>
<div class="article_info">J Sjögren, R Gustafsson, A Wackenfors, M Malmsjö, L Algotsson and R Ingemansson. <span class="article_issue_date">2004</span>. <span class="article_title">Effects of Vacuum-Assisted Closure on Hemodynamic Parameters in a Porcine Sternotomy Wound Model.</span> <span class="journal_series_title">Interactive Cardiovascular and Thoracic Surgery</span>, <span class="journal_volume">vol 3</span> <span class="journal_pages">pp 666-71</span>.</div>
<div class="article_info">A Wackenfors, J Sjögren, L Algotsson, R Gustafsson, R Ingemansson and M Malmsjö. <span class="article_issue_date">2004</span>. <span class="article_title">The Effect of Vacuum-Assisted Closure Therapy on the Pig Femoral Artery Vasomotor Responses.</span> <span class="journal_series_title">Wound Repair and Regeneration</span>, <span class="journal_volume">vol 12</span> <span class="journal_pages">pp 244-51</span>.</div>

Subject classification (UKÄ)

  • Cardiac and Cardiovascular Systems
  • Surgery

Free keywords

  • orthopaedics
  • Surgery
  • Kardiovaskulära systemet
  • Cardiovascular system
  • Infektioner
  • Infections
  • endothelium
  • vascular
  • central hemodynamics
  • risk factors
  • long-term survival
  • mortality
  • wound closure
  • cardiac surgery
  • vacuum-assisted closure
  • poststernotomy mediastinitis
  • traumatology
  • Kirurgi
  • ortopedi
  • traumatologi

Fingerprint

Dive into the research topics of 'Vacuum-assisted closure in cardiac surgery - clinical outcome and vascular effects'. Together they form a unique fingerprint.

Cite this