November 10, 1988New England Journal of Medicine
Stroke Following Coronary-Artery Bypass Surgery
Why the study?
Does the presence of preoperative carotid bruits increase the risk of postoperative stroke or transient ischemic attacks in patients undergoing coronary-artery bypass surgery?
Population
108 patients drawn from 5,915 consecutive patients who had coronary bypass surgery from 1970 to 1984.
Comparison
Presence of preoperative carotid bruits vs Absence of preoperative carotid bruits
Design
Case-control
Follow-up
postoperative period
Authors
Discussion
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Member takes
Implication
Carotid bruits may warrant inclusion in CABG risk models; leaves open whether screening modifies stroke incidence.
Structured PICO
Does the presence of preoperative carotid bruits increase the risk of postoperative stroke or transient ischemic attacks in patients undergoing coronary-artery bypass surgery?
P
Population
108 patients (54 with postoperative stroke or transient ischemic attacks and 54 randomly selected controls) drawn from 5,915 consecutive patients who had coronary bypass surgery from 1970 to 1984.
I
Intervention
Presence of preoperative carotid bruits
C
Comparator
Absence of preoperative carotid bruits
O
Outcome
Postoperative stroke or transient ischemic attackshard clinical
Preoperative carotid bruits are associated with a significantly increased relative risk of postoperative stroke or TIA following CABG, though the absolute risk remains small (2.9%).
Cite This Study
Reed et al. (1988) studied this question.