First, ECG monitoring is an extremely important application of monitors (what is a monitor). As a commonly used equipment in hospitals, it can simultaneously perform precise tests on the patient's ECG, respiration, blood pressure, body temperature, pulse, and other physiological parameters.
Practical medical equipment for measurement. It is very intuitive to display the data that needs to be detected and monitored on the display for the hospital staff to judge and treat the patient. Each physiological parameter that can be monitored is generally set with a safe value for reference and comparison. If the actual value of the patient is not within the safe value, an automatic alarm will be issued.
Principle of ECG monitor
(1) The basic composition of the system:
(A) Cathode Ray Oscilloscope
B) ECG recorder
(C) Pressure monitor
(D) Respiratory monitor
(E) Body temperature monitor
(F) Computer processing system composition
The electrical activity of the heart is transferred to the processor through the ECG lead wire, and the blood pressure is transformed into an electrical signal into the processor through the pressure sensor.
Breathing activity caused by exhalation and inhalation causes the change of chest cavity resistance to be transmitted to the processor through the ECG lead and the ECG activity at the same time.
The processor amplifies the electrical signal from the patient's body and then processes it by a microcomputer into a waveform output and digital signal.
The output is displayed on the screen of the cathode-ray oscilloscope through the photoelectric display system, and then we can see some parameters such as heart blood pressure and breathe very intuitively.
1. Electrocardiogram, which is needed by every critically ill patient. It mainly depends on the patient's heart rhythm. If there is an abnormality, an electrocardiogram is also needed, because most of the electrocardiograms on the electrocardiogram monitor can only display one lead, but many The information is not complete yet, and a more comprehensive 12-lead ECG or 18-lead ECG should be done.
2. Heart rate, mainly to monitor the number of heartbeats of the patient.
3. Blood pressure, monitor the patient's high pressure, low pressure, and mean arterial pressure.
4. Blood oxygen is the patient's blood oxygen saturation, depending on the patient's oxygen supply.
5. Respiration rate and respiration waveform, depending on the patients' respiration frequency and rhythm. These indicators are displayed on most monitors. If other monitoring is required, further adjustment of the settings or additional modules, such as carbon dioxide partial pressure, cardiac output, etc., are necessary. Generally, each item has a normal value or normal range. When the value is no longer within the normal range, the doctor will see it, consider the reason, and intervene.
