Uterine and fetal hemodynamics and fetal cardiac function in early pregnancy

P. Jouppila, K. Makikallio-Anttila, Juha Rasanen, A. Tekay

Research output: Contribution to journalArticle


Our results in a longitudinal study protocol at 5, 7, 8 and 10 weeks demonstrate that in normal pregnancies the arterial signals of the yolk sac circulation disappear and umbilicoplacental circulation simultaneously increases between 8 and 10 weeks. Spiral artery impedance decreases between 5 and 7 weeks. In the uterine and arcuate arteries a decrease in impedance and an increase in blood flow velocities occurs after 8 week. Vaginal bleeding with or without subchorionic hematoma is associated with an increased radial artery impedance at 7 weeks of pregnancy. Miscarriage could, however, not be predicted by means of Doppler ultrasonography. Significant improvement in the diastolic function of fetal heart between 6 and 7 weeks is accompanied by increased mean velocities across inflow and outflow tracts. Appearance of biphasic inflow pattern is associated with significant change in the systolic function of heart between 8 and 9 weeks. Atrioventricular valve recurgitation is a common finding at 10 week. These findings suggests that the first trimester of human pregnancy represents great transitional changes at all levels of fetal and placental hemodynamics.

Original languageEnglish (US)
JournalUltrasound in Medicine and Biology
Issue numberSUPPL. 2
Publication statusPublished - 2000
Externally publishedYes


ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Jouppila, P., Makikallio-Anttila, K., Rasanen, J., & Tekay, A. (2000). Uterine and fetal hemodynamics and fetal cardiac function in early pregnancy. Ultrasound in Medicine and Biology, 26(SUPPL. 2).