Let's learn about 24-hour dynamic blood pressure monitoring

Dynamic blood pressure monitoring is a technology that checks blood pressure for 24 hours without affecting daily activities. It can obtain multiple blood pressure values ​​within 24 hours. According to the measurement results, the blood pressure readings of the human body in different time periods and different living conditions can be judged, and blood pressure diagnosis can be given accordingly. It has now become an indispensable detection method for identifying and diagnosing hypertension, assessing the risk of cardiovascular and cerebrovascular diseases, evaluating the efficacy of antihypertensive treatment, and guiding individualized antihypertensive treatment.

A person's blood pressure is not fixed within 24 hours a day, but fluctuates within a certain range. Studies have shown that about half of the hypertensive patients who think their blood pressure is well controlled have unstable blood pressure after 24-hour dynamic blood pressure monitoring, showing that their blood pressure rises in the morning or afternoon, or rises in both the morning and afternoon, or rises at night, indicating that their blood pressure control is not ideal. This is one of the important reasons why some hypertensive patients, although they insist on taking medicine and feel that their blood pressure is well controlled, still suffer from heart, brain and kidney damage.

By monitoring 24-hour dynamic blood pressure, one can timely understand and grasp the laws and characteristics of blood pressure fluctuations, and use short-, medium-, and long-acting antihypertensive drugs in different situations to keep blood pressure stable within 24 hours and effectively prevent damage to target organs such as the heart, brain, and kidneys. Therefore, compared with random blood pressure measurements in the clinic, dynamic blood pressure monitoring is more superior and has gradually become an important method for evaluating the effectiveness of antihypertensive treatment.

Advantages of 24-hour dynamic blood pressure

(I) Compared with occasional blood pressure measurements in outpatient clinics or at home, dynamic blood pressure monitoring has the following advantages:

1. It eliminates the randomness of occasional blood pressure measurement, avoids the influence of factors such as emotions, exercise, eating, smoking, drinking, etc. on blood pressure, and reflects the blood pressure situation more objectively and truly.

2. Dynamic blood pressure can obtain more blood pressure data and actually reflect the changing patterns of blood pressure throughout the day.

3. The detection rate of patients with early asymptomatic mild hypertension or borderline hypertension is improved and they can receive timely treatment.

4. Dynamic blood pressure can guide drug treatment. In many cases, it can be used to measure the effect of drug treatment, help select drugs, and adjust dosage and administration time.

(II) Compared with clinical blood pressure measurement, dynamic blood pressure monitoring has the following advantages

1. Perform up to dozens of blood pressure measurements within 24 hours to avoid the influence of accidental factors.

2. Based on the measurement results, calculate the average blood pressure of a person during sleep and wakefulness throughout the day.

3. Based on the results, white coat hypertension and masked hypertension can be accurately identified.

4. Because it is measured throughout the day under daily life conditions, a person’s blood pressure in real life conditions can be obtained.

5. Since measurements are also taken at night, it can help detect nocturnal hypertension and excessive drops in blood pressure at night.

6. Discover the changing patterns of a person’s blood pressure at different times of the day.

7. 24-hour dynamic blood pressure measurement after taking the medicine can accurately identify the effectiveness of the treatment plan.

8. Dynamic blood pressure measurement after taking the medicine can help to promptly detect situations where the treatment plan lowers blood pressure too much.

9. Based on 24-hour blood pressure analysis, timely predict potential cardiovascular and cerebrovascular diseases.

Indications for ambulatory blood pressure monitoring

1. Newly discovered grade 1-2 office hypertension.

2. The clinic blood pressure is high-normal, or combined with target organ damage or high cardiovascular risk.

3. Large fluctuations in blood pressure, or suspected orthostatic hypotension, postprandial hypotension, secondary hypertension, etc.

4. The clinic blood pressure has reached the target, but cardiovascular and cerebrovascular complications still occur, or new target organ damage appears, or target organ damage progressively worsens.

5. Make a clear diagnosis of refractory hypertension or if blood pressure in the clinic is not up to standard, in order to understand the blood pressure at night, in the morning and the circadian rhythm of blood pressure in order to optimize the antihypertensive treatment plan.

6. Evaluate the antihypertensive effect of drug or device therapy in clinical trials.

Precautions for using 24-hour dynamic blood pressure monitor

In order to ensure your safe use of the instrument and to more accurately record your blood pressure information, please pay attention to the following matters:

1. The cuff is usually tied on the dominant arm. If the cuff is obviously loose after being tied, it can be tied again during the interval of automatic measurement. The tightness is based on putting down two fingers.

2. The automatic measurement interval is once every 30 minutes during the day and once every hour at night. After the monitor starts checking, do not operate the monitor at will. During exercise (such as running, walking, etc.), if the cuff starts to press and measure, try to keep your arms and body still, and it is best to stop exercising temporarily to ensure the accuracy of the record.

3. Please protect the recorder box during the inspection. Do not open the recorder box to remove the battery by yourself. Do not wet or bump the recorder by taking a bath or swimming. Try to stay away from strong magnetic field environments, high-power transformers or high-voltage line equipment, and do not perform X-ray or magnetic resonance imaging.

4. Go to the hospital department to install or dismantle the recorder at the agreed time.