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Modeling renal autoregulation in a hemodynamic, first-trimester gestational model.
Maaike van Ochten1,2,3, Berend E Westerhof3,4, Marc E A Spaanderman1,2
1Department of Gynecology and Obstetrics, Radboud University Medical Center, Nijmegen, The Netherlands.
Physiological Reports
|October 6, 2022
Summary
This study models renal autoregulation during pregnancy to understand cardiovascular changes. The developed model accurately predicts renal blood flow and vascular resistance, aiding research into hypertensive disorders.
Area of Science:
- Physiology
- Mathematical Modeling
- Cardiovascular System
Background:
- Maternal cardiovascular system adapts during pregnancy for fetal growth.
- Circulatory maladjustments can lead to hypertensive disorders in pregnancy.
- Mathematical models offer insights into gestational cardiovascular physiology.
Purpose of the Study:
- To develop a robust and transparent model for renal autoregulation.
- To integrate this model into an existing circulatory gestational model.
- To enhance understanding of renal volume regulatory responses in pregnancy.
Main Methods:
- Developed a mathematical model for renal autoregulation.
- Incorporated myogenic response and tubuloglomerular feedback mechanisms.
- Validated the model against published rat data on renal blood flow and arteriole resistance.
Main Results:
- The model accurately represented renal autoregulatory behavior.
- With myogenic response alone, maximum deviation was 7% for renal blood flow and 7% for resistance.
- With both mechanisms, maximum deviation was 7% for renal blood flow and 5% for resistance.
Conclusions:
- The developed renal autoregulation model is comparable to empirical data.
- This model can be extended to study hemodynamic changes in healthy and complicated pregnancies.
- Further research should incorporate additional regulatory mechanisms for comprehensive understanding.
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