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Retrosternal Deformations after Coronary Artery Bypass Surgery Using Statistical Shape Analysis.

Mehmet Senel Bademci1, Gokhan Ocakoglu2, Cemal Kocaaslan1

  • 1Department of Cardiovascular Surgery, Istanbul Medeniyet University, Faculty of Medicine, Istanbul, Turkey.

Brazilian Journal of Cardiovascular Surgery
|December 28, 2020
PubMed
Summary

Coronary artery bypass grafting (CABG) causes retrosternal narrowing and brings the pulmonary artery closer to the sternum. Surgeons should exercise caution during repeat median sternotomy due to these anatomical changes.

Keywords:
AortaCardiac Surgical ProceduresCoronary Artery BypassEmergency Service, HospitalPulmonary ArterySternumSurgeonsTomography

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Area of Science:

  • Cardiovascular Surgery
  • Thoracic Imaging
  • Anatomical Studies

Background:

  • Coronary artery bypass grafting (CABG) is a common procedure.
  • Post-CABG adhesions can alter retrosternal anatomy.
  • Understanding these changes is crucial for surgical safety.

Purpose of the Study:

  • To evaluate anatomical deformations in the retrosternal area after CABG.
  • To compare retrosternal structures between patients with and without prior CABG.
  • To assess the impact of adhesions on major vascular structures.

Main Methods:

  • Retrospective, single-center study.
  • 40 patients with prior CABG and 40 controls.
  • Contrast-enhanced chest CT and statistical shape analysis.

Main Results:

  • Significant differences in retrosternal anatomy between groups (P<0.001).
  • Pulmonary artery significantly closer to the midsternal line in the CABG group (P=0.013).
  • Ascending aorta also closer, but not statistically significant.

Conclusions:

  • CABG leads to retrosternal narrowing.
  • The pulmonary artery is positioned closer to the sternum post-CABG.
  • Increased caution advised for repeat median sternotomy due to potential vascular injury.