Uterine activity and ductus venosus flow velocity patterns during the first stage of labor
| Autor: | Jan Danko, Karol Dokus, Silvester Galo, Jozef Visnovsky, Pavol Zubor, Norbert Szunyogh |
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| Rok vydání: | 2006 |
| Předmět: |
Adult
Contraction (grammar) Uterus Gestational Age Ultrasonography Prenatal Veins Uterine Contraction Fetus Pregnancy medicine Humans Longitudinal Studies cardiovascular diseases Uterine activity business.industry Obstetrics and Gynecology General Medicine Anatomy Heart Rate Fetal medicine.anatomical_structure Flow velocity In utero Pulsatile Flow Circulatory system cardiovascular system Female Labor Stage First business Lower limbs venous ultrasonography Blood Flow Velocity Ductus venosus |
| Zdroj: | International Journal of Gynecology & Obstetrics. 95:18-23 |
| ISSN: | 0020-7292 |
| Popis: | To analyze the effects of uterine contractions on ductus venosus (DV) pulsatility during the first stage of labor.Twenty healthy women were examined. Measurements were taken at three stages of cervical dilatation (4 cm, 4-7 cm andor=8 cm) during and between contractions. Peak velocity during ventricular systole (S) and atrial contraction (A), pulsatility index for veins (DV PIV), ductus venosus index (DVI) and the S/A ratio were measured.The DV was observed successfully in 16 cases. The mean S velocity did not change significantly (64 cm/s during and 65 cm/s between contractions). The mean A velocity decreased significantly from 35 cm/s measured between contractions to 29 cm/s during contractions (P0.0001). The mean DV PIV and DVI were significantly higher during contractions (0.72 and 0.55) than between contractions (0.57 and 0.45) (P0.0001). There were no significant differences in means between stages of cervical dilatation.Significant differences during and between uterine contractions can be observed in DV pulsatility during normal labor. |
| Databáze: | OpenAIRE |
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