Background: The main goals of coronary artery bypass
graft (CABG) surgery for most patients are to relieve angina, to
improve functional capacity, to return to work, and to improve health.
A limited amount of information is available regarding the various
attributes that are associated with achieving these goals.
Study Objectives: To investigate different patient
attributes affecting these outcomes.
Prospective data collection.
Setting: Fourteen medical
centers that perform CABG surgery in Israel.
The 4,012 patients who underwent CABG surgery during 1994.
Measurements: Trained nurses collected data using
structured questionnaires prior to and 4 to 5 months after the
operation. Using logistic regression, four risk models were created to
the following health indicators: recurrence of angina, functional
capacity, return to work, and perception of health. Candidate variables
were sociodemographic details, major comorbidities, risk factors for
cardiac disease, and severity of cardiac disease.
Results: The mean age of the patients was 63.8 years old,
79.3% were men, 59.9% were elective operations, and left main disease
was found in 17.3%. Multivariate logistic regression revealed that the
variables that significantly contributed to three or more of the models
were Sephardic Jewish origin, female gender, left ventricular
dysfunction, and diabetes mellitus.
Conclusions: There is a similarity between risk factors of
various health indicators in CABG surgery patients. Thus, it is
possible to define a population at high risk that may not benefit from