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Stroke in coronary bypass surgery

W R Martin, S A Hashimoto

    The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques
    |February 1, 1982
    PubMed
    Summary
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    Coronary bypass surgery patients experienced strokes, with femoral cannulation potentially causing emboli. Lower hemoglobin levels were linked to stroke risk in this surgical review.

    Area of Science:

    • Cardiovascular Surgery
    • Neurology
    • Vascular Surgery

    Background:

    • Coronary artery bypass grafting (CABG) is a common procedure.
    • Stroke is a significant complication following cardiac surgery.

    Purpose of the Study:

    • To investigate the incidence and potential causes of stroke after coronary bypass surgery.
    • To identify pre-operative and intra-operative factors associated with stroke in CABG patients.

    Main Methods:

    • Retrospective review of 253 patients undergoing coronary bypass surgery.
    • Comparison of pre-operative and intra-operative variables between stroke and stroke-free groups.

    Main Results:

    • Eight patients (3.2%) experienced stroke, either intra-operatively or post-operatively.

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  • A statistically significant difference in hemoglobin levels (p < 0.01) was observed between groups.
  • All intraoperative strokes occurred in patients with femoral cannulation, suggesting embolic potential.

    • Conclusions:

    • Femoral cannulation may be a source of embolic material leading to intraoperative stroke.
    • An embolic origin is postulated for most strokes occurring after coronary bypass surgery.
    • Hemoglobin level is a potential risk factor for stroke in this patient population.