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Diagnostic and prognostic values of systolic time intervals in labile hypertension

A González-Gómez, D García-Barreto

    Cor Et Vasa
    |January 1, 1982
    PubMed

    Insights

    Labile hypertension (LH) patients show distinct systolic time intervals, including increased heart rate and reduced carotid pulse upstroke time (Ut). These changes, alongside stable high blood pressure, suggest LH may evolve into chronic hypertension.

    Area of Science:

    • Cardiology
    • Hypertension Research
    • Non-invasive Cardiovascular Diagnostics

    Background:

    • Labile hypertension (LH) represents an early stage of hypertension, potentially reversible.
    • Understanding clinical features of LH is crucial for predicting disease progression.

    Purpose of the Study:

    • To identify novel clinical features differentiating labile hypertension (LH) from normal individuals and chronic essential hypertension.
    • To investigate the progression of cardiovascular parameters in LH over time.

    Main Methods:

    • Non-invasive recording of systolic time intervals in patients with labile hypertension (LH).
    • Comparison of data with matched normal individuals and young chronic essential hypertensive patients.
    • Two-year follow-up study to monitor changes in cardiovascular parameters and blood pressure.

    Main Results:

    • Labile hypertensives exhibited increased heart rate and reduced carotid pulse upstroke time (Ut) compared to controls.
    • A trend towards reduced heart rate and increased Ut and ejection time was observed during follow-up.
    • Most LH patients maintained stable high blood pressure readings throughout the study.

    Conclusions:

    • Systolic time intervals, specifically heart rate and Ut, can help differentiate labile hypertension (LH).
    • Observed cardiovascular changes suggest an evolution from a reversible stage to chronic hypertension.
    • LH may represent an initial, evolving phase of a pathological process leading to sustained hypertension.

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