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Related Experiment Videos

Cardiopulmonary changes in the crying neonate.

R Dinwiddie, R Pitcher-Wilmott, J G Schwartz

    Pediatric Research
    |August 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

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    Crying significantly impacts newborn hemodynamics, increasing heart rate and blood pressure initially, but then causing significant drops in blood pressure and oxygen levels in infants recovering from respiratory distress syndrome (RDS).

    Area of Science:

    • Neonatal Physiology
    • Cardiovascular Research
    • Respiratory Medicine

    Background:

    • Respiratory distress syndrome (RDS) is a common condition in newborns.
    • Understanding the physiological effects of infant crying is crucial for clinical care.
    • Hemodynamic responses to crying in vulnerable infants are not fully characterized.

    Purpose of the Study:

    • To investigate the hemodynamic effects of crying in newborn infants.
    • To assess changes in heart rate, blood pressure, and arterial blood gases during crying.
    • To evaluate these effects in infants recovering from respiratory distress syndrome (RDS).

    Main Methods:

    • Studied 12 newborn infants recovering from RDS.
    • Measured esophageal pressures during crying to assess respiratory effort.

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  • Monitored heart rate, systolic and diastolic blood pressures, and arterial blood gases (PaO2, PaCO2, pH, base excess).

    • Main Results:

    • Crying induced significant increases in heart rate and initial blood pressure.
    • Esophageal pressures showed significant inspiratory and expiratory ranges.
    • Progressive decreases in blood pressure and pronounced reductions in pulse pressure were observed during sustained crying, along with a significant decrease in arterial oxygen tension (PaO2).

    Conclusions:

    • Crying elicits complex hemodynamic changes in infants recovering from RDS.
    • The observed blood pressure fluctuations and decreased oxygenation warrant clinical attention.
    • Further research is needed to understand the long-term implications of these crying-induced hemodynamic effects.