What are the correct steps for using the monitor?

　　Commonly used chest bipolar lead monitoring, choose the ideal position, and select monitoring, surgery or diagnosis to filter, should make the ECG waveform clear, easy to analyze arrhythmia. The positive electrode is located below the negative electrode, avoiding auscultation and defibrillation, monitor manufacturers avoid friction and frequently moving parts, and surgery avoids the output line of the electrocautery.

　　Position the ECG electrodes correctly. The electrode pads must have a moist and rich conductive paste and a clean lead connector. Chest impedance method (chest motion during breathing causes changes in body resistance. The change in impedance value describes the dynamic waveform of breathing, which shows the breathing rate parameters and is susceptible to interference. It is best to connect the two breathing electrodes RA and LL Connect the wire through the most active area during breathing to obtain the best breathing wave. Monitor manufacturers should avoid placing the liver area and ventricle on the white RA and red LL wires of the respiratory electrode.

　　This avoids artifacts caused by heart coverage or arterial blood flow. Respiratory monitoring is not suitable for patients with a large range of activity, as this may lead to false alarms. Use cuff inflation to reach a certain pressure to completely block the arterial blood flow. With the decrease of pressure, the arterial blood flow will be completely blocked-gradually opened-fully opened, and the pulsation of the arterial blood vessel wall will generate a shock wave in the cuff.

　　Produce the first most definite signal—can reflect SBP, when the oscillation amplitude reaches the peak—can reflect MAP, and when the pressure in the cuff suddenly decreases—can reflect DBP. The cuff should be level with the right atrium and abducted 45 degrees. The patient is moving, trembling or cramping, and the measurement will be error. Unless the condition requires, blood pressure need not be measured frequently, and the interval between blood pressure measurement should be adjusted in time according to the condition. When the patient's blood pressure changes rapidly during the measurement, there will be errors in the measurement, and even the blood pressure cannot be measured. Do not wear too thick clothes, especially cotton sweaters.

　　If the patient is in severe shock or hypothermia, there will be an error in the pressure measurement, because the decrease in blood flow to the periphery will cause a decrease in arterial pulsation. The same part cannot be monitored continuously for a long time. Do not use the blood oxygen sensor probe on the same arm as the blood pressure cuff. Improper installation of the sensor or improper contact with the limb. When strong light is irradiated on the blood oxygen probe, the light receiver deviates from the normal range, resulting in inaccurate measurement. Poor peripheral circulation, such as shock and low finger temperature, will reduce the arterial blood flow at the measured site, making the measurement inaccurate or undetectable. Measuring blood pressure on the same side, or compressing the side in the lateral position, affects the microcirculation and leads to incorrect results.

　　Applying nail polish to nails will affect the transmission of light, making measurement difficult. If necessary, measure the oxygen saturation of the distal toe. Take out the ECG lead wire, align the convex surface of the lead wire plug with the groove of the "ECG" jack on the front panel of the main unit, and insert it to the other end of the ECG lead wire with five electrode tips The human body is connected. The correct connection steps are: use 75% ethanol to clean the surface of the measurement site. The purpose of the monitor manufacturer is to remove the cuticle and sweat on the human skin to prevent poor contact of the electrode pads.

　　Fasten the electrode head of the ECG lead and the electrodes on the five electrode pads. After the ethanol volatilizes cleanly, stick the five electrode pads to the cleaned specific position to make the contact reliable and not to fall off. Fix the placket on the lead wire to the hospital bed. And tell patients and medical staff not to pull the electrode wire and lead wire. Be sure to connect the ground wire, this will play a very important role in the normal display of the waveform.