Introduction
Coronary artery bypass grafting (CABG) is the most frequently performed heart
surgery in Brazil. Recent international guidelines recommend that national
societies establish a database on the practice and results of CABG. In
anticipation of the recommendation, the BYPASS Registry was introduced in
2015.
Objective
To analyze the profile, risk factors and outcomes of patients undergoing CABG
in Brazil, as well as to examine the predominant surgical strategy, based on
the data included in the BYPASS Registry.
Methods
A cross-sectional study of 2292 patients undergoing CABG surgery and
cataloged in the BYPASS Registry up to November 2018. Demographic data,
clinical presentation, operative variables, and postoperative hospital
outcomes were analyzed.
Results
Patients referred to CABG in Brazil are predominantly male (71%), with prior
myocardial infarction in 41.1% of cases, diabetes in 42.5%, and ejection
fraction lower than 40% in 9.7%. The Heart Team indicated surgery in 32.9%
of the cases. Most of the patients underwent cardiopulmonary bypass (87%),
and cardioplegia was the strategy of myocardial protection chosen in 95.2%
of the cases. The left internal thoracic artery was used as a graft in 91%
of the cases; the right internal thoracic artery, in 5.6%; and the radial
artery in 1.1%. The saphenous vein graft was used in 84.1% of the patients,
being the only graft employed in 7.7% of the patients. The median number of
coronary vessels treated was 3. Operative mortality was 2.8%, and the
incidence of cerebrovascular accident was 1.2%.
Conclusion
CABG data in Brazil provided by the BYPASS Registry analysis are
representative of our national reality and practice. This database
constitutes an important reference for indications and comparisons of
therapeutic procedures, as well as to propose subsequent models to improve
patient safety and the quality of surgical practice in the country.