One is that everyone's blood pressure changes greatly within a day. Strictly speaking, the blood pressure of a person is different at every moment. It varies with the person's mental state, time, season, temperature, and the measured part (arm or wrist) and posture (sitting or lying). Changed. Therefore, it is normal for the value of blood pressure to be different each time. For example, due to stress and anxiety, people’s systolic blood pressure (high pressure) measured in the hospital is generally 25 mm Hg to 30 mm Hg (.. 4 kPa to 4.0 kPa) higher than at home, and some are even higher. The difference will be 50 mm Hg (6.67 kPa).
The second is that the measurement method is incorrect. Pay attention to the following 3 points when measuring: First, the height of the cuff should be at the same height as the heart position, and the hose of the cuff should be placed at the brachial artery pulse point, and the bottom of the cuff should be 1 to 2 cm higher than the elbow; At the same time, the elasticity of the cuff winding should be able to insert just one finger. Secondly, be sure to keep quiet for about 10 minutes before the measurement. Later, the time interval between the two measurements should not be less than 3 minutes, and the position and body position should be consistent. After completing these three points, it should be said that the blood pressure measured is accurate and objective.
