1. Open the arm band and fold it into a set as shown in the picture. If the arm band slips out of the metal ring, it should be restored by pulling its end along the ring.
2. Attach the armband to your left arm. The bottom of the arm band should be 1 to 2 cm above the elbow. the green marker should be located on the artery on the inside of the arm. The air tube should be on the extension of the middle finger (palm direction).
*The arm should be bare during measurement. If a thicker top is worn, do not roll up the long sleeves during measurement.
*Do not wrap the arm band around the elbow joint when measuring. This product can also be measured with the right arm in the same way as above.
3. Hold the end of the arm band and pull it while wrapping it tightly around your arm.
[Edit paragraph]Identification
Electronic sphygmomanometer using a sensor to collect pulse signals, measuring high pressure, low pressure values, high sensitivity, and its work is not subject to external sound and other factors interfere; mercury sphygmomanometer is through the person to listen to the pulse beat, with the eyes to observe the scale of the mercury, coupled with mercury sphygmomanometer of the smallest scale of the specification is not the same, and some even 5mmHg for the smallest unit, so it determines the doctor's report of the pulse, and the blood pressure of the blood pressure. Therefore, it is decided that the reading reported by the doctor is not the most accurate reading, but it does not mean that the doctor measured wrongly, it is determined by the characteristics of the tools used.
Both are noninvasive, indirect measurements of blood pressure, and in 1905, the Soviet physician Kopomko
B suggested that under normal conditions, fully compressed arteries do not make any sound, but only when the arteries are incompletely blocked, and that sound could therefore be used to determine blood pressure in humans. The auscultation method utilizes the principle of Koch sound pressure measurement and consists of a sphygmomanometer, a cuff and a stethoscope. The measurement process is to inflate the cuff with an inflatable ball, and when the cuff pressure exceeds the arterial systolic pressure, the arterial vasculature is closed and the blood flow is blocked. Then deflate the cuff at a rate of 2-3mmHg/s. When the systolic pressure is higher than the cuff pressure, part of the artery opens and the blood jet forms a vortex or turbulence, which vibrates the blood vessels and transmits to the surface of the body, i.e., the Cochrane's tone, which is heard by the stethoscope. The pressure in the cuff corresponding to the first Koch sound is systolic, and diastolic when the sound is lowered to silent.
The electronic sphygmomanometer is based on the vibration method. In the process of increasing or decreasing the static pressure, the pulsatile pressure is extracted, amplified and its envelope is depicted, and then the geometry of the envelope is analyzed, and the static pressure corresponding to the highest point of the envelope is the mean pressure. From the mean pressure, diastolic and systolic pressures are estimated by the ratio method or the inflection point method.