I. Common indicators of 24-hour ambulatory blood pressure parameters 1. Average blood pressure Average blood pressure includes 24-hour average systolic and diastolic blood pressure, daytime average systolic and diastolic blood pressure, and nighttime average systolic and diastolic blood pressure. 2.Blood pressure load During monitoring, daytime systolic blood pressure is greater than 140 mmHg, diastolic blood pressure is greater than 90 mmHg, nighttime systolic blood pressure is greater than 120 mmHg, diastolic blood pressure is greater than 80 mmHg, the number of blood pressure exceeds the standard percentage of the total number of measurements. 3, nighttime blood pressure drop rate The difference between the daytime average systolic (or diastolic) pressure minus the nighttime average systolic (or diastolic) pressure and then divided by the daytime average systolic (or diastolic) pressure to derive the nighttime systolic (or diastolic) pressure drop rate. The nocturnal blood pressure drop rate is greater than 10%. 4.Blood pressure fluctuation range The difference between the highest systolic blood pressure minus the lowest systolic blood pressure throughout the day is the systolic blood pressure fluctuation range, and the diastolic blood pressure fluctuation range can be calculated by the same method. Second, 24-hour ambulatory blood pressure monitoring to help diagnose hypertension 1, early detection of hypertensive patients Some hypertensive patients only at 6-8 o’clock or 5-8 o’clock in the afternoon blood pressure rise, if in office hours rely on the even side of the blood pressure is easier to miss the diagnosis, so the suspected hypertensive patients should be 24-hour ambulatory blood pressure monitoring, or in the two blood pressure peak time measurement of blood pressure, can be timely detection of hypertensive patients. 2.Identify secondary hypertension Patients with various secondary hypertensive diseases have their own peculiarities of 24-hour blood pressure fluctuations. For example, hypertension caused by renal artery stenosis is characterized by a continuous increase in blood pressure without a pattern of falling blood pressure during sleep at night, and no significant reduction by drug treatment. 3, the discovery of “white coat hypertension” and “reverse white coat hypertension” “white coat hypertension” refers to the patient’s nervousness caused by seeing health care workers. “Reverse white coat hypertension” refers to hypertension found by 24-hour ambulatory blood pressure monitoring in patients who have had normal blood pressure on the occasional side of the clinic several times. These patients are not uncommon and are particularly common in male patients who smoke.