How to use an electronic blood pressure monitor at home?
Many elderly patients need to measure their blood pressure at home every day, but can each patient measure their blood pressure accurately? Does the measured blood pressure value have clinical reference significance and value? In order to solve this little trouble, and to enable all patients to measure blood pressure accurately at home, let us learn how to accurately measure blood pressure with an electronic sphygmomanometer at home today.
what is blood pressure
The lateral pressure of blood flowing in the blood vessel against the blood vessel wall per unit area is called blood pressure. Blood pressure is divided into arterial blood pressure and venous blood pressure. Generally speaking, blood pressure refers to arterial blood pressure, usually referring to the brachial artery blood pressure measured in the upper arm.
01 Normal blood pressure
Take brachial artery blood pressure as the standard. Normal adult blood pressure at rest is in the range of systolic blood pressure < 140 mmHg and diastolic blood pressure < 80 mmHg, and pulse pressure 30-40 mmHg.
02Measurement of blood pressure
The measurement of blood pressure is divided into direct measurement of blood pressure and indirect measurement of blood pressure. Sphygmomanometers are designed for the sound of blood as it swirls through narrowed blood vessels. This method is simple, non-invasive and suitable for any patient.
03 Factors that affect blood pressure changes
(1) Age: With the increase of age, both systolic and diastolic blood pressure tend to increase gradually, but the increase of systolic blood pressure is more significant than that of diastolic blood pressure.
(2) Gender: Before menopause, blood pressure in women is lower than that in men; after menopause, blood pressure increases, and the difference is small.
(3) day and night and sleep: blood pressure showed obvious day and night fluctuations. The performance is the lowest blood pressure at night, and the blood pressure rises rapidly after getting up in the morning.
Most people's blood pressure is the lowest at 2-3 in the morning, with a peak at 6-10 in the morning and 4-8 in the afternoon.
(4) Environment: In a cold environment, blood pressure may slightly increase due to peripheral vasoconstriction; in a high temperature environment, blood pressure may decrease slightly due to vasodilation of the skin.
(5) Body type: tall and obese people have higher blood pressure.
(6) Body position: blood pressure in standing position is higher than that in sitting position, and blood pressure in sitting position is higher than that in supine position.
(7) Different parts of the body: Generally, the right upper limb is higher than the left upper limb.
(8) Exercise, emotional agitation, smoking, drinking, etc.
04Types of sphygmomanometers
There are three types of sphygmomanometers commonly used in clinical practice: mercury sphygmomanometer, aneroid sphygmomanometer and electronic sphygmomanometer. Today we are talking about electronic sphygmomanometer to measure blood pressure.
There are no factors affecting the accuracy of blood pressure within 30 minutes before measuring blood pressure, such as: strenuous exercise, emotional agitation, etc.; then rest in a quiet sitting or lying position for 5 minutes, and then measure blood pressure, and at the same time, measure blood pressure. : Fixed time, fixed location, fixed body position, fixed blood pressure monitor.
The method of blood pressure measurement: here is the blood pressure measurement method of the upper limb electronic sphygmomanometer (brachial artery)
(1) Choose body position: take a sitting or supine position. The arm is level with the fourth costal cartilage in the sitting position and the mid-axillary line in the supine position.
(2) Binding the cuff: Insert the sphygmomanometer cuff from the wrist and push it to 1-2 cm above the elbow joint, and the "▲" or "●" of the cuff points to the strongest point of the brachial artery pulse. Tie the cuff tightly enough to fit a finger.
(3) Read the value: Turn on the switch of the electronic sphygmomanometer and start the measurement. During measurement, you can see the digital change on the screen of the electronic blood pressure monitor, and read the value after the number stops changing. The upper number represents systolic blood pressure (commonly known as "high pressure"), the lower number represents diastolic blood pressure (commonly known as "low pressure"), and the bottom number represents
The word indicates the number of pulse beats per minute.
05 Warm Tips
All types of sphygmomanometers will have certain errors when used for a long time (cuff loosening, lumen aging, etc.), so it is necessary to regularly go to professional institutions to verify the sphygmomanometer.
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