The most commonly used cuff blood pressure measurement may not be accurate!
Recently, a new study found that the most commonly used method for measuring blood pressure may be inaccurate, which means that people at risk of serious disease, such as heart disease, often miss diagnosis and potentially life-saving treatment. . This so-called "sleeve method" mainly involves temporarily cutting off the blood supply on the upper arm band and then calculating the blood pressure once the cuff is relaxed.
In a study published in the Journal of the American College of Cardiology, the researchers found that this method, which has been used for more than a century, may not be accurate in monitoring patients with moderate blood pressure, and that such patients are It is ubiquitous worldwide.
Accurate measurement of blood pressure is considered to be the most accurate and important of all medical tests. Misdiagnosis of hypotension often misses opportunities to effectively reduce the risk of cardiovascular disease in individuals, often with a stroke, heart attack or kidney disease. On the other hand, misdiagnosis of high blood pressure may cause the patient to take too much unnecessary medication for the treatment of the disease.
What is blood pressure?
Blood pressure is the force that is applied to the aorta with the heartbeat body, while the aorta is a blood vessel that can carry blood away from the heart; blood pressure measurements often give a high pressure (systolic blood pressure) and low pressure (diastolic blood pressure). Higher values ​​during the contraction of the heart represent pressure peaks, while lower values ​​represent stresses that the heart relaxes. Healthy blood pressure levels are generally less than 120/80mmHg, and decades of research clearly tell us that if a person's blood pressure rises, then her/he will have an increased risk of cardiovascular disease, and the higher the blood pressure, the risk The higher.
About one-third of adults develop high blood pressure, such as regular exercise, normal weight and healthy diet choices, and lifestyle factors such as drugs can effectively lower blood pressure and inhibit cardiovascular disease in individuals. Although there are many factors to consider when assessing whether a person has high blood pressure, clinicians usually consider taking the patient to take the medicine to lower the blood pressure to a certain threshold (140/90 mmHg).
How is blood pressure measured?
The method of measuring blood pressure was based on a technique developed in 1896, and then the researchers optimized the method in 1905, but the basic principles remained almost unchanged. A wider cuff will be placed on the upper arm and the cuff will be re-expanded until the aorta in the upper arm is completely occluded and the blood stops flowing; then the deflation is slowly deflated until the cuff is turned back until the blood flows back to the lower arm. Researchers will measure a range of signal parameters that represent systolic and diastolic blood pressure, usually by taking them with a stethoscope or automated equipment.
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