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Early intellectual dysfunction following coronary bypass surgery.

P J Shaw, D Bates, N E Cartlidge

    The Quarterly Journal of Medicine
    |January 1, 1986
    PubMed
    Summary
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    Coronary artery bypass graft surgery often causes early cognitive impairment in patients. Neuropsychological testing reveals that 79% of patients experience some cognitive dysfunction one week post-operation.

    Area of Science:

    • Neurology
    • Cardiology
    • Psychology

    Background:

    • Coronary artery bypass graft (CABG) surgery is a common procedure.
    • Neurological and psychological complications can arise post-CABG.
    • Early detection of cognitive dysfunction is crucial for patient outcomes.

    Purpose of the Study:

    • To assess the incidence and severity of early neuropsychological dysfunction after CABG surgery.
    • To evaluate cognitive function using standardized psychometric testing one week post-operation.

    Main Methods:

    • A prospective study involving 312 patients undergoing CABG surgery.
    • Detailed psychometric testing (10 standard intellectual function tests) administered pre- and post-operation to 298 patients.
    • Focus on cognitive function assessment at one week after surgery.

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    Main Results:

    • 79% of patients (235 out of 298) exhibited cognitive impairment one week post-CABG.
    • Only 21% of patients (63 out of 298) showed no decline in cognitive scores.
    • While 123 patients had no subjective symptoms, 89 reported cognitive issues, and 23 experienced significant disability.

    Conclusions:

    • There is a high incidence of early cerebral dysfunction following CABG surgery, detectable by psychometric testing.
    • The majority of post-operative cognitive dysfunction is often mild and may not be apparent to the patient or interfere with hospital activities.