Arterial pressure, vascular input impedance, and resistance as determinants of pulsatile blood flow in the umbilical artery

European Journal of Obstetrics and Gynecology and Reproductive Biology

Volumn 84, Issue 2, 1999, Pages 119-125

  Adamson, S Lee ^a  

^a MOUNT SINAI HOSPITAL   (Canada)

Author keywords

Cardiovascular; Fetus; Hemodynamics; Umbilical artery; Velocity waveform

Indexed keywords

ANGIOTENSIN; ENDOTHELIN 1; NITROPRUSSIDE SODIUM; NORADRENALIN; VASOACTIVE AGENT;

ARTERIAL PRESSURE; BLOOD FLOW; BLOOD FLOW VELOCITY; CONFERENCE PAPER; DUCTUS VENOSUS; FETUS; FETUS CIRCULATION; HEMODYNAMICS; HUMAN; NONHUMAN; PLACENTA CIRCULATION; PRIORITY JOURNAL; PULSATILE FLOW; SHEEP; UMBILICAL ARTERY; UMBILICAL CORD BLOOD FLOW; VASCULAR RESISTANCE;

EID: 0033062254     PISSN: 03012115     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0301-2115(98)00320-0     Document Type: Conference Paper

References (24)

1. Trudinger B.J., Giles W.B., Cook C.M., et al. Fetal umbilical artery flow velocity waveforms and placental resistance: clinical significance. Br J Obstet Gynaecol. 92:1985;23-30.
2. Erskine R.L.A., Ritchie J.W.K. Umbilical artery blood flow characteristics in normal and growth-retarded fetuses. Br J Obstet Gynaecol. 92:1985;605-610.
3. Trudinger B.J., Cook C.M. Umbilical and uterine artery flow velocity waveforms in pregnancy associated with major fetal abnormality. Br J Obstet Gynaecol. 92:1985;666-670.
4. Al-Ghazali W., Chapman M.G., Allan L.D. Doppler assessment of the cardiac and uteroplacental circulations in normal and complicated pregnancies. Br J Obstet Gynaecol. 95:1988;575-580.
5. Arabin B., Siebert M., Jimenez E., et al. Obstetrical characteristics of a loss of end-diastolic velocities in the fetal aorta and/or umbilical artery using Doppler ultrasound. Gynecol Obstet Invest. 25:1988;173-180.
6. Adamson S.L., Morrow R.J., Langille B.L., et al. Site-dependent effects of increases in placental vascular resistance on the umbilical arterial velocity waveform in fetal sheep. Ultrasound Med Biol. 16:1990;19-27.
7. Surat D.R., Adamson S.L. Downstream determinants of pulsatility of the mean velocity waveform in the umbilical artery as predicted by a computer model. Ultrasound Med Biol. 22:1996;707-717.
8. Morrow R.J., Adamson S.L., Bull S.B., et al. Effect of placental embolization on the umbilical arterial velocity waveform in fetal sheep. Am J Obstet Gynecol. 161:1989;1055-1060.
9. 2 consumption in sheep. Am J Physiol. 270:1996;H16-H23.
10. Trudinger B.J., Stevens D., Connelly A., et al. Umbilical artery flow velocity waveforms and placental resistance: the effects of embolization of the umbilical circulation. Am J Obstet Gynecol. 157:1987;1443-1448.
11. Maulik D., Yarlagadda P., Nathanielsz P.W., et al. Hemodynamic validation of Doppler assessment of fetoplacental circulation in a sheep model system. Ultrasound Med. 8:1989;177-181.
12. Irion G.L., Clark K.E. Relationship between the ovine fetal umbilical artery blood flow waveform and umbilical vascular resistance. Am J Obstet Gynecol. 163:1990;222-229.
13. Nimrod C., Clapp J. III, Larrow R., et al. Simultaneous use of Doppler ultrasound and electromagnetic flow probes in fetal flow assessment. J Ultrasound Med. 8:1989;201-205.
14. Adamson S.L., Whiteley K.J., Langille B.L. Pulsatile pressure-flow relations and pulse-wave propagation in the umbilical circulation of fetal sheep. Circ Res. 70:1992;761-772.
15. Adamson S.L., Langille B.L. Factors determining aortic and umbilical blood flow pulsatility in fetal sheep. Ultrasound Med Biol. 18:1992;255-266.
16. Morrow R.J., Bull S.B., Adamson S.L. Experimentally induced changes in heart rate alter umbilicoplacental hemodynamics in fetal sheep. Ultrasound Med Biol. 19:1993;309-318.
17. Adamson S.L., Myatt L., Byrne B.M.P. Regulation of umbilical blood flow. Polin R.A., Fox W.W. Fetal and Neonatal Physiology. 1998;977-989 W.B. Saunders, Philadelphia,PA.
18. Adamson S.L., Morrow R.J., Bull S.B., et al. Vasomotor responses of the umbilical circulation in fetal sheep. Am J Physiol. 256:1989;R1056-R1062.
19. Paulick R.P., Meyers R.L., Rudolph C.D., et al. Umbilical and hepatic venous responses to circulating vasoconstrictive hormones in fetal lamb. Am J Physiol. 260:1991;H1205-H1213.
20. Giles W.B., Trudinger B.J., Stevens D., et al. Umbilical artery flow velocity waveform analysis in normal ovine pregnancy and after carunculectomy. J Dev Physiol. 11:1989;135-138.
21. Leiser R., Krebs C., Ebert B., et al. Placental vascular corrosion cast studies: a comparison between ruminants and humans. Microsc Res Tech. 38:1997;76-87.
22. Sonesson S.-E., Fouron J.-C., Drblik S.P., et al. Reference values for Doppler velocimetric indices from the fetal and placental ends of the umbilical artery during normal pregnancy. J Clin Ultrasound. 21:1993;317-324.
23. Baker A.R., Evans D.H., Prytherch D.R., et al. Some failings of pulsatility index and damping factor. Ultrasound Med Biol. 12:1986;875-881.
24. Johnston K.W., Kassam M., Koers J., et al. Comparative study of four methods for quantifying Doppler ultrasound waveforms from the femoral artery. Ultrasound Med Biol. 10:1984;1-12.