The function and principle of fetal heart monitor

A fetal heart rate monitor is a commonly used medical device used to monitor fetal heart rate changes. Through the fetal heart rate monitor, doctors can obtain fetal heartbeat information in time to assess the fetal health and take necessary medical measures. This article will explain the functions and principles of fetal heart rate monitors.

1. Function of fetal heart rate monitor

Fetal heart rate monitors have two main functions: monitoring fetal heart rate and analyzing fetal heart patterns.

a. The fetal heart rate monitor can monitor the fetal heart rate in real time. Fetal heart rate is one of the important indicators of fetal health. By monitoring fetal heart rate, doctors can determine whether the fetus is hypoxic and whether there are abnormalities such as irregular heartbeat or tachycardia. At the same time, if there are danger signals such as a slowdown in fetal heart rate or a decrease in heart rate, doctors can immediately take corresponding emergency measures to protect the life and safety of the fetus.

b. The fetal heart monitor can also analyze fetal heart patterns. The fetal heart rate pattern is drawn based on the changes in fetal heart electrical activity over time. By observing the shape and characteristics of the fetal heart rate pattern, doctors can determine whether the fetus is in a normal state. For example, under normal circumstances, the fetal heart rate pattern should show a certain regularity and stability; but if abnormal patterns such as variable heart rate, tachycardia, and bradycardia occur, it may mean that there are some problems with the fetus and further examination and treatment are needed. intervention.

2. Principle of fetal heart rate monitor

Fetal heart rate monitors are roughly divided into two types: external fetal heart rate monitors and built-in fetal heart rate monitors. Here we take an external fetal heart rate monitor as an example to introduce its working principle.

External fetal heart rate monitors mainly use ultrasound technology to obtain fetal heartbeat information. It consists of two main components: a fetal heart rate sensor and a monitor device.

The fetal heart rate sensor is a device that converts fetal heartbeat signals into electrical signals through an ultrasound probe. It is usually placed above the mother's abdomen and connected to a monitoring device. Through ultrasound technology, fetal heartbeat information can be accurately transmitted to the monitor.

The monitor device is the main control and display unit for fetal heart rate monitoring. It collects and analyzes the fetal heartbeat signal obtained from the sensor and displays the results on the screen. At the same time, the monitor can also record fetal heartbeat patterns and their changes for subsequent analysis and evaluation by doctors.

To sum up, the fetal heart rate monitor monitors and records the fetal heartbeat information in real time through ultrasound technology, providing an important reference for doctors to judge the health of the fetus and take corresponding measures. However, the fetal heart rate monitor is only an auxiliary tool, and the doctor's professional judgment and clinical experience are still required to fully evaluate the fetal condition.