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Pyelonephritis and hypertension.

S Tsuchida, K Miura, O Yamaguchi

    The Tohoku Journal of Experimental Medicine
    |November 1, 1975
    PubMed
    Summary
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    Chronic pyelonephritis significantly increases hypertension risk after urologic surgery. Blood pressure rises notably post-operation, highlighting the need for vigilant monitoring in these patients.

    Area of Science:

    • Nephrology
    • Urology
    • Cardiovascular Medicine

    Background:

    • Chronic pyelonephritis is a serious kidney infection that can lead to long-term complications.
    • Urologic surgeries like ureterocutaneostomy and nephrostomy are sometimes necessary for managing pyelonephritis.
    • The impact of chronic pyelonephritis on blood pressure following surgical intervention requires further investigation.

    Purpose of the Study:

    • To assess blood pressure changes in patients with chronic pyelonephritis after urologic operations.
    • To determine the incidence of hypertension in this patient cohort.
    • To explore potential correlations between blood pressure, renal function, family history, and plasma renin activity.

    Main Methods:

    • A longitudinal follow-up study of 46 patients with confirmed chronic pyelonephritis post-urologic surgery.

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  • Blood pressure (diastolic) was measured before and during the chronic stage (average 3.8 years, up to 12 years).
  • Analysis included age- and sex-adjusted scores, renal function tests, family history assessment, and plasma renin activity measurements in a subset of patients.

    • Main Results:

    • Average diastolic blood pressure increased from 82 mmHg pre-operation to 89 mmHg post-operation.
    • The incidence of hypertension (diastolic > 100 mmHg) rose from 7% to 30%.
    • No significant correlation was found between blood pressure and renal function, family history of hypertension, or plasma renin activity.

    Conclusions:

    • Postoperative chronic pyelonephritis is associated with a significant increase in hypertension.
    • Urologic surgery in patients with chronic pyelonephritis necessitates careful blood pressure monitoring.
    • The underlying mechanisms for hypertension in this context may not be directly related to renal function or the renin-angiotensin system.