Blood pressure estimation in the human fetal descending aorta

  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},
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. 

Ultrasound measurement of fetal arterial pulse pressure using phased‐tracking methods: A phantom study and clinical experience with antenatal corticosteroid therapy

This study aimed to compare the accuracy of fetal pulse pressure estimated with a vascular simulator with that obtained by a manometer (reference) and evaluate the pulse pressure in normal human

Assessing vascular characteristics of the fetal descending aorta: A feasibility study

It is demonstrated that it is possible and potentially useful to measure fetal abdominal aorta biometrics and biomechanical characteristics using conventional ultrasonography from 16 diabetic and non‐diabetic mothers.

A Computational Model of the Fetal Circulation to Quantify Blood Redistribution in Intrauterine Growth Restriction

A computational model of the fetal circulation was developed, including the key elements related to fetal blood redistribution and using measured cardiac outflow profiles to allow personalization, and supports that while MCA flow is mainly determined by a fall in brain resistance, the AoI is influenced by a balance between increased peripheral-placental and decreased cerebral resistances.

Measurement of Pulse Wave Velocity in Fetal Descending Aorta with Dual Doppler Method: a Preliminary Study

The PWV of the descending fetal aorta could be accurately and conveniently measured with a commercially marketed ultrasound machine, and PWV measurement with dual Doppler technique had ability to detect fetal cardio-vascular changes by ritodrine infusion.

Foetal aortic flow velocity waveforms in healthy and hypertensive pregnant women

Chronic stable hypertension in pregnancies with normal outcome, evidences an upward regular trend of foetal descending aorta pulsatility index that is similar to the normotensive condition.

Methods for prenatal assessment of fetal cardiac function

This review aims to provide a complete overview of the different ultrasound techniques that can be used for fetal cardiac function assessment and discusses their (theoretical) strengths and shortcomings.

Understanding Prenatal Brain Sparing by Flow Redistribution Based on a Lumped Model of the Fetal Circulation

A simplified 0-D lumped model of the fetal circulation is developed to simulate brain-sparing for better understanding this compensatory mechanism and its influence on pulsatility and isthmic flow indexes.

Simulation of the cardiotocogram during labor : towards model-based understanding of fetal physiology

With the new model a more realistic FHR decrease is obtained during contraction-induced reduction of uterine blood ow, while the reduced complexity and improved physical basis facilitate interpretation of model results and thereby make the model more suitable for use as a research and educational tool.



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.