Stamou et al identified risk factors associated with stroke occurring in patients after coronary artery bypass graft (CABG) surgery. Patients with 1 or more risk factors should be advised of the risk for stroke and be monitored more closely for this complication.
Risk Factor (from logistic regression analysis)
Odds Ratio
95% Confidence Interval
chronic renal insufficiency
2.8
2.0 – 4.0
history of recent myocardial infarction
2.5
1.2 – 5.0
history of previous cerebrovascular accident
1.9
1.5 – 2.7
carotid artery disease
1.9
1.2 – 3.0
hypertension
1.6
1.3 – 2.0
diabetes mellitus
1.4
1.2 – 1.8
age > 75 years
1.4
1.1 – 1.8
moderate to severe left ventricular dysfunction
1.3
1.1 – 1.7
low cardiac output post-operatively
2.1
1.6 – 2.7
new onset of atrial fibrillation post-operatively
1.7
1.4 – 2.2
from Table 3, page 1510
The risk of stroke increases with the number of risk factors present.
The presence of stroke resulted in:
(1) high short-term mortality (14%, or 5 fold greater than patients without stroke)
(2) longer post-operative stays (4 days longer than non-stroke)
To read more or access our algorithms and calculators, please log in or register.
