![]() ![]() The fetal heart rate, extracted from fetal heart sounds, is an important part of fetal monitoring and directly reflects the health of the fetus in the mother's body. In this case, remote fetal monitoring equipment has broad application prospects. In addition, the current monitoring method has two drawbacks: one is inconvenient to use and the other is that it cannot monitor the fetus in real time. In the face of the huge number of pregnant women, limited medical resources are facing new challenges. At present, the monitoring of fetuses is mainly done in larger hospitals. With the in-depth study of fetal heart function in the academic field, the fetal heart rate is also used to calculate the Tei index and the KI index. Clinically, the abnormality of the fetal state is mainly judged by the fetal heart rate baseline variability, fetal heart rate variability deceleration, late deceleration, etc. Once the fetus is in a state of hypoxia for a long time, it will cause irreversible damage. The occurrence of fetal ischemia or hypoxia in the mother's womb will cause abnormal fetal heart rate. The normal fetal heart rate not only reflects the healthy heart movement function of the fetus but also reflects the control function of the fetal nervous system. In response to this, it is one of the important tasks of our information construction to establish a new model based on the cloud platform, with the “Internet + medical” model and the use of modern information technology for remote fetal heart rate monitoring and diagnosis. ![]() Not only the workload of the department doctors is overloaded, at the same time, the actual fetal heart rate monitoring needs of pregnant women outside working hours cannot be guaranteed. At the same time, the doctors in the fetal heart monitoring room operate the local fetal heart rate monitor to monitor and diagnose the fetal heart rate of pregnant women. At present, the existing traditional diagnosis and treatment model is based on the hospital as the main body and the working hours of the hospital. How to find a way that is convenient and guarantees the health and safety of pregnant women and the service diagnosis and treatment model to reduce the pressure of the fetal heart care unit in the hospital is a hot issue that everyone is concerned about. In recent years, with the full liberalization of the national second-child policy and the gradual increase of elderly pregnant women, the work pressure of the hospital's fetal heart rate monitoring department has also increased. The second type of fetal heart rate monitoring images appeared in the highest among the diagnostic standards, and the difference in the second type of fetal heart rate monitoring images between the various diagnostic standards was statistically significant, P ≤ 0.001. The difference of pregnancy and parity in various images was statistically significant, P < 0.05. There is no statistically significant difference in maternal age, gestational age at childbirth, pregnancy comorbidities, and complication rates in the five-level interpretation system of ACOG (2009), RCOG (2007), SOGC (2007), and the United States (2007). However, there was no significant difference in the number of acceleration values between the two groups the proportion of small mutations in the normal group was lower than that of the suspicious group and the proportion of medium mutations was higher than that of the suspicious group. The area and acceleration time were significantly higher than those in the suspicious group. Using statistical methods to analyze the average value and range of various characteristic parameters of fetal heart rate under continuous long-term monitoring, the results show that the baseline has a downward trend from 10 o'clock in the night to 4 o'clock in the morning and is the lowest around 2 o'clock in the morning. In this study, a maternal-fetal Holter monitor based on f ECG technology was used to collect maternal heart rate, fetal heart rate, and uterine contractions signals, isolate the fetal heart rate, and design an algorithm to extract the fetal heart rate baseline, acceleration, variation, wake-up cycle, and nonlinear parameters. The fetal heart rate, extracted from the fetal heart sound signal, is one of the important indicators that reflect the health of the fetus in the womb. Fetal heart sound is an important part of fetal monitoring and has attracted extensive research and attention from scholars at home and abroad in recent years.
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