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Incidence of renal artery stenosis in a population having cardiac catheterization

G Ramirez, W Bugni, S M Farber

    Southern Medical Journal
    |June 1, 1987
    PubMed

    Insights

    Screening for renal artery stenosis during cardiac catheterization is not routinely justified. Significant renovascular hypertension is rare, even in hypertensive patients undergoing the procedure.

    Area of Science:

    • Cardiology
    • Nephrology
    • Vascular Medicine

    Background:

    • Renovascular hypertension is a less common cause of hypertension.
    • Identifying renal artery stenosis is crucial for appropriate patient management.

    Purpose of the Study:

    • To determine the frequency of renal artery stenosis and renovascular hypertension in patients undergoing cardiac catheterization.
    • To evaluate the utility of routine screening for renal artery stenosis in this population.

    Main Methods:

    • 102 consecutive patients undergoing cardiac catheterization were screened for renal artery stenosis.
    • Renal artery stenosis severity was assessed.
    • Renal vein renin levels were measured in select patients to determine lateralization.

    Main Results:

    • 64% of patients were hypertensive.
    • 13.7% of the total population had renal artery stenosis.
    • Only 5 patients had >50% arterial lumen narrowing.
    • Only 4 of these 5 patients had lateralizing renins, indicating significant renovascular hypertension.

    Conclusions:

    • The low prevalence of significant renovascular hypertension does not support routine screening during cardiac catheterization.
    • Screening may be beneficial for hypertensive patients undergoing the procedure.
    • Further research is warranted to define optimal screening strategies.

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