TY - JOUR T1 - Determination of the intervillous perfusion index in pregnancies with intrauterine growth retardation. JF - GYNECOLOGIC AND OBSTETRIC INVESTIGATION Y1 - 1985 A1 - József Bódis A1 - Katalin Zámbó A1 - Zoltán Nemessányi A1 - Eörs Máté A1 - Imre F. Csaba AB - The authors developed a new radioisotope technique to measure placental bloodflow for early detection of placental insufficiency. Using this method placental perfusion has been measured in 20 healthy pregnant women and in 15 pregnancies complicated with intrauterine growth retardation (IUGR). The T-maximum pictures obtained made it possible to differentiate between the vascular and intervillous phases of placental blood flow. The time period of intervillous phase calculated as the percent of the whole placental T-maximum was given as the intervillous perfusion index (IPI). It has been demonstrated that IPI is significantly longer in IUGR pregnancies (67.0 +/- 14.6) than in the control group (31.6 +/- 10.7). These data suggest that the first sign of placental insufficiency is the prolongation of IPI, which is likely to precede the quantitative reduction of placental perfusion. VL - 19 SN - 0378-7346 IS - 2 N1 - UT: A1985AEZ0800006ScopusID: 0021943433 JO - GYNECOL OBSTET INVES ER -