Aposteriory entropy and short term variation of fetal heart rate
- 1 к.т.н., руководитель группы биомедицинских разработок, Институт биологического приборостроения РАН (г. Пущино)
- 2 д.м.н., профессор, кафедра акушерства и гинекологии, лечебный факультет, ГБОУ ВПО «Московский государственный медико-стоматологический университет им. А.И. Евдокимова» Минздрава России
- 3 ст. преподаватель, кафедра информационно-измерительной и биомедицинской техники, Рязанский государственный радиотехнический университет
Abstract
Basing on the short-term Fourier transform, a fetal heart rate (FHR) measurement method that has been developed by the authors allows us to make use of aposteriory entropy for the FHR variation within a short duration analysis window.
A Doppler ultrasonography signal received from a fetus-s heart is the integrated carrier of information on blood circulation in a fetal heart. A volume blood flow velocity simulation calculated from a Doppler probe audio signal is introduced. The simulation suggests better noise immunity in comparison to using a simple envelope signal that is common approach in cardiotocography.
The description is given for algorithms and procedures that were implemented for computation of FHR, entropy, and Dawes/Redman-s STV. An approach to estimation and interpretation of FHR short term variability with entropy is outlined basing on real data processing.
The principal results are as follows:
1. A Doppler ultrasonography oriented simulation of fetal heart blood flow variation improving noise immunity is proposed.
2. Advances of aposteriory entropy against Dawes/Redman-s STV in terms of sensitivity and time resolution are shown.
How to cite
Казанцев А.П., Пономарёва Ю.Н., Шуляков А.В. Апостериорная энтропия и кратковременная вариабельность частоты сердечных сокращений плода // Биомедицинская радиоэлектроника. 2014. № 7. С. 67–71.
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