1.I have an electronic blood pressure monitor at home. My blood pressure is normal when I measure it in summer, but it is high in winter. It is not that the electronic blood pressure monitor is affected by the season, but that the human blood pressure is affected by the season. Blood pressure decreases mildly in the summer and increases significantly in the winter, especially in the elderly. American scholars have shown that systolic and diastolic blood pressure in winter are 12 mm Hg and 5.5 mm Hg higher than in summer. Therefore, in the summer and autumn, you can combine the blood pressure measurements and reduce the medication appropriately under the guidance of your doctor. Li Bing, Emergency Center of Henan Provincial People’s Hospital 2.See the product description of the upper arm type electronic blood pressure monitor, which requires the cuff to be placed at the heart level for measurement, why does the electronic blood pressure monitor have strict requirements on the measurement position? When measuring blood pressure, the subject is required to take a sitting position, preferably in a reclining chair, with the left upper arm exposed and the cuff wrapped for measurement. The height of the cuff should be at the same level as the heart. If the position of the cuff is too high, the measured blood pressure value will be low: if the position of the cuff is too low, the measured blood pressure value will be high. 3.When I measured my blood pressure at home, my systolic blood pressure was only 135 mmHg, but when I went to the hospital for a physical examination, my blood pressure was 140 mmHg. Is it because the electronic blood pressure monitor is not accurate? Am I considered hypertensive or not? Systolic blood pressure ≥ 140 mmHg (or) diastolic blood pressure ≥ 90 mmHg without anti-hypertensive medication is considered hypertension. The Guidelines for the Prevention and Control of Hypertension in China state that a home self-measured blood pressure of 135/85 mm Hg is equivalent to a clinic blood pressure of 140/90 mm Hg using an upper-arm automatic or semi-automatic electronic sphygmomanometer that meets the relevant standards. Therefore, a blood pressure of 135 mm Hg measured several times at home is also considered hypertension. 4.No one in the family suffers from hypertension, is it necessary to have an electronic blood pressure monitor? The awareness of hypertension in China is low, and many people suffer from hypertension but are not aware of it. With the improvement of people’s lives and the acceleration of the pace of life in China, a series of unhealthy lifestyles have been brought about, which also makes the incidence of hypertension is on the rise. Therefore, although no one in the family suffers from hypertension, you can also have an electronic blood pressure monitor. For each family member to regularly monitor blood pressure, to their own health and the health of their families. 5.Why should I take several measurements with an electronic blood pressure monitor and take the average for reference? The blood pressure of a normal person is at its peak at 8 to 10 a.m. and 4 to 6 p.m. At night, the blood pressure drops by more than 10% compared to the daytime, and the blood pressure at a certain moment cannot represent the overall blood pressure level. Therefore, it is recommended to take the average of several measurements as a reference value of blood pressure level. An electronic blood pressure monitor with a memory function can be selected to overcome the resulting error. The date, time, place and activity of the measurement should be recorded along with the blood pressure value for reference by yourself and your doctor. It is recommended that patients take the average of the stored data for a week or a month as the blood pressure reference value for that week or month. 6.When receiving the free electronic blood pressure monitor measurement on the street, the blood pressure monitor has been measured by hundreds of people, is it still accurate? Electronic sphygmomanometer has DC and AC two kinds of power supply, AC power supply voltage stability, it is recommended to use, and the use of DC power is not necessary to worry about this problem, because four alkaline dry batteries can generally measure about 300 times, if the battery power is insufficient, electronic sphygmomanometer will have battery energy prompt message, timely replacement of the battery or choose AC power on the line.