With the development of medical technology, ECG monitors are widely used in the monitoring of clinical conditions. By viewing the physiological parameters monitored by it, in addition to providing reasonable and objective basis for medical staff, early detection of disease changes and prevention of complications It has played an important guiding role, allowing medical staff to take effective treatment measures and treatments for patients with changing conditions faster and better, so as to ensure the safety of patients. It is precisely because this device facilitates the monitoring of the patient's condition by the medical staff, and the treatment of the patient can be more rapid and effective. Therefore, it is widely used in various hospitals. Engineers in the medical electronics industry may have a good understanding of this aspect of knowledge, and some may know a little about it, including what is an ECG monitor, its basic principles, working principle, correct use steps, and precautions for use. Below we learn about this kind of equipment in depth from its basic principles and usage steps. What is an ECG monitor? What is an ECG monitor? It is a kind of monitor and its important application (what is the monitor). As a device commonly used in hospitals, it can accurately test and measure the physiological parameters such as electrocardiogram, respiration, blood pressure, body temperature and pulse of the patient. Practical medical equipment. It is 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's patient. Each physiological parameter that can be monitored generally sets the safety value for its reference and comparison. If the actual value of the patient is not within the safe value, it will automatically alarm. ECG monitor principle (1) Basic components 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 ECG activity is transmitted to the processor via the ECG lead wire, and the blood pressure is transmitted to the processor via the pressure sensor. Respiratory activity caused by exhalation and inhalation changes the thoracic resistance. The ECG leads and the ECG activity are simultaneously transmitted to the processor. The processor amplifies the electrical signal from the patient and converts it into a waveform output and digital signal after being processed by the microcomputer. The output is displayed on the screen of the cathode ray oscilloscope by the photoelectric display system, and its working principle is an important reference for the design of the electrocardiograph. (2) Structure and principle of portable remote ECG monitor It is mainly composed of four key modules: ECG signal front-end acquisition and conditioning module, ECG signal processing and storage module, data display module and remote transmission control module. The system function structure is shown in the figure. The hardware platform adopts CycloneII 2C35 FPGA chip, and adopts SOPC technology to integrate NiosII soft core processor, memory, function interface and extended I/O port on one FPGA chip, and peripherally expand ECG data acquisition board, network, LCD screen, Hardware such as touch screen/keyboard and SD memory card realizes the hardware architecture of the system and has an expandable I/O interface for future system function upgrade and expansion. Portable remote ECG monitor structure and schematic (3) Structure and principle of portable ECG monitor System hardware modules mainly include: signal conditioning circuits (amplifiers, bandpass filters, notch filters), embedded processors and peripheral circuits (A/D conversion, Flash ROM and SDRM extensions, LCD LCD and keyboard modules, Ethernet) Module) two major parts. Its structure and schematic are as follows: Portable remote ECG monitor structure and schematic The ECG signal is collected from the left and right arms of the person through a dedicated electrode, and then sent to the signal conditioning circuit, which is first amplified by the preamplifier, filtered by the high-pass filter to remove the DC signal and the low-frequency baseline interference, and then amplified by the post-stage amplifier, and then The filter further filters out the 50HZ power frequency interference, and obtains the required ECG signal through the low-pass filter, and sends it to the ADC through the analog signal input terminal for high-precision A/D conversion. We also introduced a right leg drive circuit and a lead drop detection circuit in the circuit. The results are often used to detect disease. Gastric acidity pH is 3.5 ~ 7.0, common in atrophic gastritis, gastric cancer, secondary iron deficiency anemia, gastric dilatation, hyperthyroidism. Reduced gastric acidity is seen in duodenal reflux, gastric ulcer, gastric cancer, atrophic gastritis, chronic gastritis, pernicious anemia, etc. Such as duodenal bulb ulcer, Zhu-Ai syndrome, pyloric obstruction, chronic cholecystitis, duodenal fluid reflux will also increase pH. Gastric Acid Ph Test Strips,Gastric Acid Strips,Gastric Acid Test Strips,Gastric Acid Ph Strips,Gastric Acid Ph Test Kits,Gastric Acid Ph Test Paper Changchun LYZ Technology Co., Ltd , https://www.lyzstrips.com
normal
PH0.9 ~ 1.8.
Clinical significance of test results
(1) Gastric acid reduction: pH3.5 ~ 7.0, common in atrophic gastritis, gastric cancer, secondary iron deficiency anemia, gastric dilatation, hyperthyroidism. Reduced gastric acidity is seen in duodenal reflux, gastric ulcer, gastric cancer, atrophic gastritis, chronic gastritis, pernicious anemia, etc.
(2) Increased gastric acidity: in duodenal bulb ulcer, Zhuo-Ai syndrome, pyloric obstruction, chronic cholecystitis, duodenal fluid reflux will also increase pH.