Why the study?
Does coronary artery bypass grafting increase central nervous system complications compared to cardiac valve surgery in patients undergoing cardiac surgery?
Does coronary artery bypass grafting increase central nervous system complications compared to cardiac valve surgery in patients undergoing cardiac surgery?
Patients undergoing CABG have a higher risk of postoperative central nervous system complications compared to those undergoing valve surgery, likely driven by preexisting cerebrovascular disease and prolonged cardiopulmonary bypass time.
May prompt closer neurologic monitoring after CABG; leaves open independent procedural effects versus comorbidities.
Central nervous system (CNS) complications (disturbance of consciousness, focal motor deficits, and seizures) after coronary artery bypass grafting (CABG) and cardiac valve surgery were studied retrospectively. The incidence of CNS complications was significantly more frequent in CABG (11%, 71/638) than in valve surgery (7%, 24/345). Major contributory factors of CNS complications were preexisting cerebrovascular disease and cardiopulmonary bypass time. In comparison to previous reports, older age, hypertension, diabetes mellitus, and cerebrovascular disease were more common in the patients undergoing CABG. The preexisting cerebrovascular disease and prolonged cardiopulmonary bypass time probably increase the risk of cerebral embolism and/or cerebral hypoperfusion. We conclude that patients undergoing CABG surgery are at greater risk for neurological damage in comparison to those undergoing valve surgery.
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Kuroda et al. (1993) studied this question.
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