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Pulmonary and systemic hemodynamic evolution in chronic bronchitis.

F Schrijen, H Uffholtz, J M Polu

    The American Review of Respiratory Disease
    |January 1, 1978
    PubMed
    Summary
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    Pulmonary hemodynamics remained stable in chronic bronchitis patients over 3.3 years. A decrease in systemic blood pressure may stabilize pulmonary arterial pressure, potentially due to hypoxia and hypercapnia.

    Area of Science:

    • Cardiology
    • Pulmonology
    • Respiratory Medicine

    Background:

    • Chronic bronchitis can lead to pulmonary hypertension.
    • Long-term hemodynamic changes in chronic bronchitis patients are not well-documented.

    Purpose of the Study:

    • To assess changes in hemodynamic values over time in patients with chronic bronchitis.
    • To investigate the relationship between systemic blood pressure and pulmonary hemodynamics in this cohort.

    Main Methods:

    • Right heart catheterization was performed on 35 chronic bronchitis patients.
    • Hemodynamic variables were re-measured in the same patients 3.3 years later.
    • Patients were analyzed in groups based on initial mean pulmonary arterial pressure.

    Main Results:

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    • No significant changes in mean pulmonary arterial pressure were observed at rest or during exercise in either normotensive or pulmonary hypertensive groups.
    • Systemic arterial pressure significantly decreased in the pulmonary hypertensive group.
    • No significant changes in right/left filling pressures or cardiac output were noted.

    Conclusions:

    • Pulmonary hemodynamics are stable over a 3.3-year period in patients with chronic bronchitis.
    • A decrease in systemic arterial pressure may contribute to the stabilization of pulmonary hemodynamics.
    • Hypoxia and hypercapnia might induce peripheral vasodilation, affecting systemic blood pressure.