Blood pressure estimation in the human fetal descending aorta

@article{Struijk2008BloodPE,
  title={Blood pressure estimation in the human fetal descending aorta},
  author={Piet C. Struijk and V. J. Mathews and Thanasis Loupas and Patricia A. Stewart and Edward B. Clark and Eric A. P. Steegers and Juriy W. Wladimiroff},
  journal={Ultrasound in Obstetrics and Gynecology},
  year={2008},
  volume={32}
}
The objectives of this study were to estimate fetal blood pressure non‐invasively from two‐dimensional color Doppler‐derived aortic blood flow and diameter waveforms, and to compare the results with invasively derived human fetal blood pressures available from the literature. 

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References

SHOWING 1-10 OF 35 REFERENCES

Fetal haemodynamic changes in fetuses during fetal development evaluated by arterial pressure pulse and blood flow velocity waveforms

The relation between diameter pulse (pressure pulse) and flow velocity waveforms in the fetal descending aorta in fetuses with intrauterine growth retardation and acceleration is studied.

Fetal cardiac output, distribution to the placenta and impact of placental compromise

The aim was to determine the normal distribution of fetal cardiac output to the placenta during the second half of pregnancy, and to assess the changes imposed by growth restriction with various degrees of placental compromise.

Intracardiac pressures in the human fetus

Fetal cardiovascular pressure measurements in the normal fetus assist in understanding the fetal circulation, and provide a basis for the assessment of cases of congenital heart disease that may be amenable to intrauterine treatment.

Feto-maternal circulation: mathematical model and comparison with Doppler measurements.

Computation of aortic flow from pressure in humans using a nonlinear, three-element model.

Aortic flow pulsations from arterial pressure was computed by simulating a nonlinear, time-varying three-element model of aortic input impedance by observing quantitative changes in cardiac output that occurred either during changes in the state of the patient or subsequent to vasoactive drugs.

Ventriculovascular physiology of the growth‐restricted fetus

  • H. GardinerJ. BrodszkiK. Maršál
  • Medicine
    Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology
  • 2001
To examine the mechanisms by which intrauterine growth restriction may influence later cardiovascular risk by comparing the ventriculovascular physiology of gestational age‐ and weight‐matched

Use of pulse pressure method for estimating total arterial compliance in vivo.

It is concluded that 60% of total arterial compliance resides in the proximal aorta, and when the inverse relationship between pressure and compliance is taken into account, the contribution of the proxies to the total arterials compliance is even more significant.