Method and system for measuring and evaluating foetus state based on area of fetal heart rate deceleration zone

Abstract

The invention discloses a method and system for measuring and evaluating foetus state based on the area of a fetal heart rate deceleration zone. The method comprises the following steps of S1, performing pretreatment on a fetal heart rate curve; S2, recognizing and extracting a fetal heart rate baseline: (a) performing frequency analysis on the pretreated fetal heart rate curve, and selecting a reference line; (b) removing non-baseline fragments in the fetal heart rate curve, and performing interpolation repairing; (c) based on a statistics confidence interval, performing counting to obtain aninitial value B0 in a forward-backward filtering method; and (d) performing smoothing treatment on the fetal heart rate curve, and fitting the fetal heart rate baseline; S3, searching a fetal heart rate minimum value in the fetal heart rate curve, setting an iteration threshold, and recognizing the fetal heart rate deceleration zone in the fetal heart rate curve; S4, calculating out the area value of the fetal heart rate deceleration zone; and S5, setting an area threshold, comparing the area value of the fetal heart rate deceleration zone with the area threshold, and measuring and evaluatingthe foetus state. Through the adoption of the method disclosed by the invention, the border of the fetal heart rate deceleration zone can be accurately positioned, and the area of the fetal heart rate deceleration zone can be accurately calculated out to form a quantification standard for measuring the decelerating of the fetal heart rate, so that the method can be effectively applied to measuring and evaluating the foetus state.

Description

technical field [0001] The invention relates to the technical field of biomedical signal processing, in particular to a fetal condition evaluation method and system based on the fetal heart rate deceleration zone area. Background technique [0002] Fetal monitoring is an important means to ensure maternal and fetal safety. Among them, the change of fetal heart rate reflects the functional state of the central nervous system, and the baby's central nervous system is the most severely damaged organ after the environment in the uterus deteriorates. Once it is damaged, it will often leave lifelong sequelae to the fetus. Therefore, the study of changes in fetal heart rate is useful for predicting fetal development and protecting the normal growth and development of the fetus throughout pregnancy until safe delivery. It is an important means to realize prenatal and postnatal care. [0003] In fetal heart rate monitoring, the deceleration of the fetal heart rate can directly refl...

AI Technical Summary

Problems solved by technology

Clinical studies have shown that fetal heart rate deceleration is an important basis for judging fetal distress and an effective evaluation parameter for judging early fetal hypoxia. Most of them rely on the professional ability and experience of medical staff, lacking consistent standards

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