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Uterine Contraction Modeling and SimulationBuilding a training system for medical personnel to properly interpret fetal heart rate tracing requires developing accurate models that can relate various signal patterns to certain pathologies. In addition to modeling the fetal heart rate signal itself, the change of uterine pressure that bears strong relation to fetal heart rate and provides indications of maternal and fetal status should also be considered. In this work, we have developed a group of parametric models to simulate uterine contractions during labor and delivery. Through analysis of real patient records, we propose to model uterine contraction signals by three major components: regular contractions, impulsive noise caused by fetal movements, and low amplitude noise invoked by maternal breathing and measuring apparatus. The regular contractions are modeled by an asymmetric generalized Gaussian function and least squares estimation is used to compute the parameter values of the asymmetric generalized Gaussian function based on uterine contractions of real patients. Regular contractions are detected based on thresholding and derivative analysis of uterine contractions. Impulsive noise caused by fetal movements and low amplitude noise by maternal breathing and measuring apparatus are modeled by rational polynomial functions and Perlin noise, respectively. Experiment results show the synthesized uterine contractions can mimic the real uterine contractions realistically, demonstrating the effectiveness of the proposed algorithm.
Document ID
20100012865
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Liu, Miao
(Virginia Modeling, Analysis and Simulation Center Suffolk, VA, United States)
Belfore, Lee A.
(Virginia Modeling, Analysis and Simulation Center Suffolk, VA, United States)
Shen, Yuzhong
(Virginia Modeling, Analysis and Simulation Center Suffolk, VA, United States)
Scerbo, Mark W.
(Virginia Modeling, Analysis and Simulation Center Suffolk, VA, United States)
Date Acquired
August 24, 2013
Publication Date
March 1, 2010
Publication Information
Publication: Selected Papers Presented at MODSIM World 2009 Conference and Expo
Subject Category
Systems Analysis And Operations Research
Distribution Limits
Public
Copyright
Public Use Permitted.
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