Risk factors for perioperative ischemic stroke in cardiac surgery

Objective: The purpose of this study was to evaluate the risk factors for ischemic stroke in patients undergoing cardiac surgery. Methods: From January 2010 to December 2012, 519 consecutive patients undergoing cardiac surgery were analyzed prospectively. The sample was divided into two groups: pati...

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Published in:Revista brasileira de cirurgia cardiovascular 2015-07, Vol.30 (3), p.365-372
Main Authors: Costa, Mário Augusto Cray da, Gauer, Maria Fernanda, Gomes, Ricardo Zanetti, Schafranski, Marcelo Derbli
Format: Article
Language:English
Subjects:
Acidente Cerebral Vascular
CARDIAC & CARDIOVASCULAR SYSTEMS
Cardiology
Cardiovascular disease
Estenose das Carótidas
Heart surgery
Procedimentos Cirúrgicos Cardíacos
Risk factors
Stroke
SURGERY
Surgical outcomes
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Summary:Objective: The purpose of this study was to evaluate the risk factors for ischemic stroke in patients undergoing cardiac surgery. Methods: From January 2010 to December 2012, 519 consecutive patients undergoing cardiac surgery were analyzed prospectively. The sample was divided into two groups: patients with stroke per and postoperative were allocated in Group GS (n=22) and the other patients in the group CCONTROL (n=497). The following variables were compared between the groups: gender, age, carotid stenosis > 70%, diabetes on insulin, chronic obstructive pulmonary disease, peripheral arteriopathy, unstable angina, kidney function, left ventricular function, acute myocardial infarction, pulmonary arterial hypertension, use of cardiopulmonary bypass. Ischemic stroke was defined as symptoms lasting over 24 hours associated with changes in brain computed tomography scan. The variables were compared using Fisher's exact test, Chi square, Student's t-test and logistic regression. Results: Stroke occurred in 4.2% of patients and the risk factors statistically significant were: carotid stenosis of 70% or more (P=0.03; OR 5.07; IC 95%: 1.35 to 19.02), diabetes on insulin (P=0.04; OR 2.61; IC 95%: 1.10 to 6.21) and peripheral arteriopathy (P=0.03; OR 2.61; 95% CI: 1.08 to 6.28). Conclusion: Risk factors for ischemic stroke were carotid stenosis of 70% or more, diabetes on insulin and peripheral arteriopathy.
ISSN:0102-7638
1678-9741
1678-9741
DOI:10.5935/1678-9741.20150032