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Related Experiment Videos

Right ventricular dysfunction in human fetal compromise.

J Räsänen1, P Kirkinen, P Jouppila

  • 1Department of Obstetrics and Gynecology, University of Oulu, Finland.

American Journal of Obstetrics and Gynecology
|July 1, 1989
PubMed
Summary

Severe intrauterine distress in fetuses can cause right ventricular heart dysfunction. This dysfunction is indicated by decreased right ventricular shortening and enlarged right/left ventricular diameters, but normal left ventricular function.

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Area of Science:

  • Perinatology
  • Fetal Cardiology
  • Neonatal Physiology

Background:

  • Intrauterine distress (IUD) poses significant risks to fetal well-being.
  • Assessing fetal cardiac function is crucial for managing high-risk pregnancies.
  • Understanding the specific cardiac adaptations to IUD is essential for timely intervention.

Purpose of the Study:

  • To investigate fetal cardiac function in pregnancies complicated by intrauterine distress.
  • To identify echocardiographic markers associated with severe intrauterine distress.
  • To determine if right or left ventricular function is primarily affected.

Main Methods:

  • Utilized M-mode echocardiography and pulsed Doppler examinations in 13 pregnancies with IUD.
  • Documented absent end-diastolic blood velocity in the fetal descending aorta.

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  • Assessed right and left ventricular dimensions and fractional shortening.

    • Main Results:

    • Absent end-diastolic blood velocity was observed in the fetal descending aorta.
    • Decreased right ventricular fractional shortening was noted.
    • An increased ratio of right/left ventricular end-diastolic diameters was found.
    • Left ventricular size and contractility remained comparable to normal pregnancies.

    Conclusions:

    • Relative right ventricular heart dysfunction is a significant finding in severe intrauterine distress.
    • Echocardiographic parameters can help identify fetuses experiencing severe IUD.
    • Findings suggest a specific pattern of cardiac compromise in response to IUD.