At present, many consumers have many misconceptions about home blood pressure measurement, such as not paying attention to posture during measurement, never correcting the sphygmomanometer after purchase, and many doubts about the fluctuation of sphygmomanometer data. Therefore, Professor Wang Jiguang, director of Shanghai Hypertension Research Institute, Deputy Secretary General of China hypertension Union and director of international hypertension society, introduced that people’s blood pressure is always changing. No living individual’s blood pressure within two minutes is the same. For example, there are rhythmic changes in the day and night. Usually, the blood pressure is high in the day and low at night. Affected by many factors, such as mood, posture change, noise, temperature, etc., if the conditions for measuring blood pressure are not stable enough, even if the blood pressure is measured several times in a row, it can fluctuate greatly, even reaching more than 10 mm Hg. In addition, smoking and other habits may also cause changes in blood pressure of 20 mm Hg.
Figure 1: Professor Wang Jiguang lectured the audience and media reporters about hypertension
family blood pressure monitoring should pay attention to methods, morning and evening blood pressure measurement should pay attention to
learn how to use a sphygmomanometer: after purchasing a sphygmomanometer, you must carefully follow the instructions. Ensure that the general conditions for blood pressure measurement are similar to those in the hospital. If you use an upper arm electronic sphygmomanometer, you should sit in a chair with a back for at least 5 minutes, put the upper arm with cuffs bound on the table, at the same level as the heart, and relax your legs.
preparation before measurement: before blood pressure measurement, you must sit in a quiet environment and rest for 5-10 minutes. After exercise, you must rest for 30 minutes to relax your body and mind, stabilize your breathing and heart rate, and then start the measurement. At the same time, it is necessary to avoid emotional tension and mental uneasiness during measurement. Smoking, drinking and showering are strictly prohibited before blood pressure measurement.
posture, posture and operation: the measurer shall lie flat or sit. During measurement, the elbow joint was at the same level as the heart, and the upper arm was extended straight and slightly abducted. The cuff airbag should be close to the skin, and the lower edge should be 2 ~ 3cm away from the elbow transverse line. It should not be too tight or too loose.
long term regular observation of blood pressure changes: measure 2-3 times each morning (after getting up) and evening (before going to bed), with an interval of 1 minute ; The blood pressure should be measured continuously for 5-7 days before the initial diagnosis or early treatment. When the blood pressure is well controlled, it should be measured once a week. Hypertension can be diagnosed when the family blood pressure is ≥ 135 / 85 mm Hg, and normal blood pressure is
there is a difference between morning and evening pressure measurement: generally, the blood pressure is high in the morning and low in the evening. In the morning, those factors that may lead to blood pressure reduction should be excluded as far as possible. For example, it should be carried out within a few hours after getting up, but before taking antihypertensive drugs; As far as possible, measure blood pressure and take a seat before breakfast. It is necessary to back up and empty the bladder before taking the pressure. In the evening, those factors that may lead to the rise of blood pressure should be excluded as much as possible. For example, the “blood pressure before bedtime” should be measured after dinner, after bathing, and after taking medicine. It should be seated as much as possible. At the same time, it should be noted that the bladder should be emptied before taking the pressure.
Professor Wang reminds consumers that it is recommended to take the average value when using electronic sphygmomanometers. The blood pressure of normal people peaks at 8-10 a.m. and 4-6 p.m., and drops by more than 10% at night compared with the daytime. Therefore, the blood pressure at a certain time cannot represent the overall blood pressure level. It is recommended to take the average value of multiple measurements as the reference value of blood pressure level.
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