Related Experiment Videos
Intracardiac pressures in the human fetus
P Johnson1, D J Maxwell, M J Tynan
1Imperial College School of Medicine, Queen Charlotte's and Chelsea Hospital, Goldhawk Road, London W4 0XG, UK. pjohnson@ic.ac.uk
Heart (British Cardiac Society)
|June 22, 2000
Summary
Normal fetal intracardiac pressure values were established, showing increases with gestation but no left-right ventricular differences. These findings aid in understanding fetal circulation and assessing congenital heart disease for potential intrauterine treatment.
Area of Science:
- Cardiovascular Physiology
- Fetal Medicine
- Neonatal Cardiology
Background:
- Establishing normal physiological parameters is crucial for diagnosing and managing fetal cardiac conditions.
- Understanding intracardiac pressures in the developing fetus is essential for evaluating cardiovascular health.
Purpose of the Study:
- To determine normal intracardiac pressure values in the human fetus.
- To provide reference data for fetal cardiovascular assessment.
Main Methods:
- Direct measurement of intracardiac pressures in all four chambers of the fetal heart.
- Study conducted on 39 fetuses between 16 and 29 weeks of gestation.
- Measurements performed during clinically indicated invasive obstetric procedures.
Main Results:
- Ventricular waveforms were comparable to those observed in postnatal life.
- Ventricular systolic and end-diastolic pressures increased with advancing gestational age.
- No significant differences were found between left and right ventricular pressures.
- Atrial pressures remained constant and equal across the studied gestational age range.
Conclusions:
- Fetal intracardiac pressure measurements offer insights into normal fetal circulation.
- These data serve as a foundation for evaluating fetuses with congenital heart disease.
- Provides a basis for identifying conditions potentially treatable with intrauterine interventions.