Oral poster abstracts delivery of an IUGR baby (birth weight of ≤ 3 rd centile for gestational age as per antenatal growth charts). AIx and carotid-femoral PWV were measured using Sphygmocor device (AtCor Medical, Sydney). AIx, PWV and mean arterial pressure (MAP) were compared between women with previous uncomplicated pregnancies (21) and women with previous PET/IUGR (10) using two-tailed unpaired t test. Results: There was no difference in the median age of the 10 women with previous PET/IUGR (38 years) and of the 21 controls (35 years). Conclusions: Vascular dysfunction as reflected by higher Aix and PWV exists pre-pregnancy in women with previous PET/IUGR as compared to normal healthy women. These women also, unsurprisingly, have a higher blood pressure. Although AIx is largely MAP independent, PWV is not. The long-term increased risk of cardiovascular disease in women with previous PET/IUGR may therefore be manifest by assessing vascular dysfunction whilst they are still reproductively active. Objectives: To determine whether there is a difference in indications for delivery and antepartum characteristics in patients with intermittent absent end diastolic velocity (iAEDV) vs. persistent absent or reversed end diastolic velocity (pA/REDV). Methods: A retrospective study of 118 patients with iAEDV or pA/REDV from 19-39 weeks. iAEDV is defined as absent diastolic velocity in some but not all waveforms in a single evaluation. The mean gestational age (GA) at diagnosis and delivery, time from diagnosis to delivery, and birth weight (BW) were compared using two-sample t-test. Frequency distributions of low cord arterial pH at birth (< 7.2), absent or minimal (a/m) variability, biophysical profile (BPP) ≤ 6, hypertensive disorders, and fetal vs. maternal indications for delivery were compared using the chi-square test. Results: Patients with iAEDV compared to pA/REDV were diagnosed with abnormal Dopplers at a later GA (29.8 vs. 27.7 weeks, P < 0.01), delivered at later GA (31.4 vs. 29.0 weeks, P < 0.0003), had a higher BW (1215.7 vs. 903.3 g, P < 0.005), and were less likely to have low arterial pH at birth < 7.2 (3.3% vs. 39.3%, P < 0.0007). There was no significant difference in indication for delivery < 32 wks (58.6 fetal vs. 41.3% maternal in iAEDV and 78.4 vs. 21.6% in pA/REDV), GA at diagnosis of IUGR (28.2 vs. 26.2 weeks), diagnosis to delivery interval (11.8 vs. 9.2 days), incidence of a/m variability most proximate to delivery (37.3% vs. 46.8%), incidence of BPP ≤ 6 (24.5% vs. 27.7%), or frequency of hypertensive disorders (62.3% vs. 53.2%). Of 59 patients diagnosed with iAEDV, 24 progressed to AREDV, 32 were unchanged and 3 resolved. Conclusions: Although fetuses with iAEDV have an improved antenatal course as compared with pA/REDV, indications for delivery are similar and adverse outcome is common. Objectives: Early attempts to calculate fetal global perfusion used 2D images. Spatial angle correction from such data is impossible. Today, velocity index calculations of the umbilical artery and other vesse...