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Cardiovascular monitoring in infants with respiratory distress syndrome

H Korvenranta, P Kero, I Välimäki

    Biology of the Neonate
    |January 1, 1983
    PubMed

    Insights

    Infants with severe respiratory distress syndrome (RDS) showed lower long-term heart rate variability (LTV) and blood pressure. LTV improved during recovery in severe RDS cases, indicating circulatory disturbances.

    Area of Science:

    • Neonatal Medicine
    • Pediatric Cardiology
    • Physiology

    Background:

    • Respiratory distress syndrome (RDS) is a common neonatal condition affecting infant cardiorespiratory function.
    • Assessing circulatory parameters is crucial for understanding RDS severity and prognosis.

    Purpose of the Study:

    • To investigate circulatory parameters in infants with varying severity of RDS.
    • To correlate cardiodynamic measurements with RDS clinical classification.

    Main Methods:

    • Multiparametric monitoring of heart rate, heart rate variability (short and long-term), mean arterial blood pressure, and R-to-pulse time.
    • Classification of 28 infants into three RDS severity classes using a clinical scoring system.

    Main Results:

    • Significantly lower long-term heart rate variability (LTV) was observed in severe RDS (class III) infants compared to mild/moderate cases (p<0.01).
    • LTV significantly increased during recovery exclusively in class III infants (p<0.001).
    • Mean arterial blood pressure was decreased in class III infants during the initial 24 hours of life, suggesting circulatory compromise.

    Conclusions:

    • Severe RDS is associated with disturbed circulatory control, including hypotension and attenuated cardiac chronotropic control.
    • Long-term heart rate variability serves as a sensitive indicator of circulatory dysfunction and recovery in severe RDS.
    • Multiparametric monitoring provides valuable insights into cardiodynamic status in neonatal RDS.

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