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Updated: May 11, 2026

Surgical Swine Model of Chronic Cardiac Ischemia Treated by Off-Pump Coronary Artery Bypass Graft Surgery
Published on: March 27, 2018
Data-driven coaching to improve statewide outcomes in CABG: before and after interventional study.
Omar A V Mejia1,2,3, Gabrielle B Borgomoni1,2,3, Fabiane Letícia de Freitas1
1Instituto do Coração (InCor), Hospital das Clínicas HCFMUSP, Faculty of Medicine, University of São Paulo.
Implementing a quality improvement program (QIP) significantly reduced operative mortality by 61.7% in coronary artery bypass grafting (CABG) surgery patients. This initiative also improved other key surgical outcomes, demonstrating its effectiveness in enhancing patient care.
Area of Science:
- Cardiovascular Surgery
- Quality Improvement Science
- Health Services Research
Background:
- Limited data exists on the impact of quality improvement initiatives (QIP) on coronary artery bypass grafting (CABG) outcomes.
- This study addresses the gap by evaluating a QIP's effect on CABG patient mortality.
Purpose of the Study:
- To assess the impact of a comprehensive quality improvement program (QIP) on mortality rates in patients undergoing coronary artery bypass grafting (CABG).
Main Methods:
- A prospective cohort study analyzed data from 4018 adult CABG patients across three phases: before, during, and after QIP implementation.
- Propensity score matching was used to compare outcomes between 2170 patients in the before and after groups.
- Key outcomes included operative mortality, deep sternal wound infection, cerebrovascular accident, and length of stay.
Main Results:
- The QIP was associated with a significant 61.7% reduction in operative mortality (P=0.046).
- Significant decreases were observed in deep sternal wound infection/mediastinitis, sepsis, ventilation time, and total hospital stay.
- Increased use of arterial grafts (internal thoracic and radial) and skeletonized dissection techniques were noted.
Conclusions:
- Quality improvement programs are linked to a substantial reduction in operative mortality following CABG.
- While not all complications decreased, the mortality reduction suggests improved "failure to rescue" rates.
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