Journal of Chest Surgery

  • 제48권1호
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  • Pages.33-39
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  • 2015
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  • 2765-1606(pISSN)
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  • 2765-1614(eISSN)
대한심장혈관흉부외과학회 (The Korean Society for Thoracic and Cardiovascular Surgery)
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Sternal Healing after Coronary Artery Bypass Grafting Using Bilateral Internal Thoracic Arteries: Assessment by Computed Tomography Scan

  • Shin, Yoon Cheol (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Kim, Sue Hyun (Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine) ;
  • Kim, Dong Jung (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Kim, Dong Jin (Department of Thoracic and Cardiovascular Surgery, Sejong General Hospital) ;
  • Kim, Jun Sung (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Lim, Cheong (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital) ;
  • Park, Kay-Hyun (Department of Thoracic and Cardiovascular Surgery, Seoul National University Bundang Hospital)
  • 투고 : 2014.06.24
  • 심사 : 2014.10.02
  • 발행 : 2015.02.05
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초록

Background: This study aimed to investigate sternal healing over time and the incidence of poor sternal healing in patients undergoing coronary artery bypass graft (CABG) surgery using bilateral internal thoracic arteries. Methods: This study enrolled 197 patients who underwent isolated CABG using skeletonized bilateral internal thoracic arteries (sBITA) from 2006 through 2009. Postoperative computed tomography (CT) angiography was performed on all patients at monthly intervals for three to six months after surgery. In 108 patients, an additional CT study was performed 24 to 48 months after surgery. The axial CT images were used to score sternal fusion at the manubrium, the upper sternum, and the lower sternum. These scores were added to evaluate overall healing: a score of 0 to 1 reflected poor healing, a score of 2 to 4 was defined as fair healing, and a score of 5 to 6 indicated complete healing. Medical records were also retrospectively reviewed to identify perioperative variables associated with poor early sternal healing. Results: Three to six months after surgery, the average total score of sternal healing was $2.07{\pm}1.52$ and 68 patients (34.5%) showed poor healing. Poor healing was most frequently found in the manubrium, which was scored as zero in 72.6% of patients. In multivariate analysis, the factors associated with poor early healing were shorter post-surgery time, older age, diabetes mellitus, and postoperative renal dysfunction. In later CT images, the average sternal healing score improved to $5.88{\pm}0.38$ and complete healing was observed in 98.2% of patients. Conclusion: Complete sternal healing takes more than three months after a median sternotomy for CABG using sBITA. Healing is most delayed in the manubrium.

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참고문헌

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