Key result
Intervillous blood flow velocities increased significantly towards mid-pregnancy (P<0.01) and remained stable until the 36th week, while impedance to blood flow decreased.
Population
115 healthy pregnant women in gestational age between 7 and 24 weeks
Design
Cross-sectional
Authors
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Describes gestational intervillous flow changes; leaves open whether deviations predict complications in prospective studies.
Cross-Sectional (n=115)
p-value: p=<0.01
Hemodynamic changes in the intervillous space during pregnancy show decreased impedance and increased blood flow velocities towards mid-pregnancy, stabilizing thereafter.
Kurjak et al. (1997) conducted a cross-sectional in Healthy pregnancy (n=115). Pregnancy progression (gestational age) vs. Earlier gestational weeks was evaluated on Impedance to blood flow and blood flow velocities (PSV, EDV, TAMV) within the intervillous space (p=<0.01). Intervillous blood flow velocities increased significantly towards mid-pregnancy (P<0.01) and remained stable until the 36th week, while impedance to blood flow decreased.
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