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Relation between utero-placental and feto-placental circulations: a longitudinal study
| Content Provider | Scilit |
|---|---|
| Author | Flo, Kari Wilsgaard, Tom Acharya, Ganesh |
| Copyright Year | 2010 |
| Description | Journal: Acta Obstetricia et Gynecologica Scandinavica Objective. To explore the relation between total utero-placental (TQuta) and feto-placental (Quv) blood flows and establish longitudinal reference ranges for the TQuta/Quv ratio and the mean uterine artery and umbilical artery pulsatility (UtaPI/UAPI) and resistance index (UtaRI/UARI) ratios. Design. Prospective longitudinal observational study. Setting. University hospital in Norway. Population. Fifty-three low-risk pregnant women. Methods. Uterine artery and umbilical vein blood flow was measured using Doppler ultrasonography at 4-weekly intervals from 22+0 to 39+6 weeks of gestation. Main outcome measures. Ratios between utero-placental and feto-placental volume blood flows and between indices of uterine and umbilical artery impedance. Results. The TQuta/Quv ratio had a significant association with the gestational age (p < 0.00001) and decreased with advancing gestation during the second half of pregnancy. The mean UtaPI/UAPI (p = 0.094) and mean UtaRI/UARI (p = 0.323) ratios were not significantly associated with gestational age and remained relatively constant. There was no significant association between TQuta and Quv (p = 0.72), mean UtaPI and UAPI (p = 0.56), or mean UtaRI and UARI (p = 0.57). Conclusion. The gestational-age-related changes in the utero-placental and feto-placental circulations do not appear to be affected by each other under physiological conditions. We have established longitudinal reference ranges for the utero-placental and feto-placental blood flow and impedance ratios during the second half of pregnancy. |
| Ending Page | 1275 |
| Starting Page | 1270 |
| ISSN | 00221295 |
| e-ISSN | 16000412 |
| DOI | 10.3109/00016349.2010.512069 |
| Journal | Acta Obstetricia et Gynecologica Scandinavica |
| Issue Number | 10 |
| Volume Number | 89 |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 2010-10-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Acta Obstetricia et Gynecologica Scandinavica Obstetrics and Gynecology Feto Placental Blood Flow Utero Placental |
| Content Type | Text |
| Resource Type | Article |
| Subject | Obstetrics and Gynecology |
