The effect of plasma volume expansion on uteroplacental blood flow in hypertensive pregnancies
Rees, A.E.; Davey, D.A.; Boniaszczuk, J.; Smith, J.
South African Medical Journal 77(5): 229-231
1990
ISSN/ISBN: 0256-9574 PMID: 2315797 Document Number: 348267
The effect of plasma volume expansion on uteroplacental blood flow was investigated in 20 hypertensive women in the 3rd trimester of pregnancy by measuring the radioactivity in the region of the placenta with a gamma camera after an intravenous injection of indium-113. Despite a significant increase in plasma volume there was no change in maternal blood pressure or in uteroplacental blood flow. This suggests an autoregulation of both blood pressure and uteroplacental blood flow.