Clinical analysis of blood pressure variability in hypertensive patients

objective: To evaluate the characteristics of blood pressure variability (BPV) and relationship beween BPV and target organ damage in hypertensive patients.Method: 50 patients with stage I,44 patients with stage I and 26 normal controls were undergone 24 hours ambulatory blood pressure monitorirg.Result: The parameters of BPV in patients with hypertension were significantly higher than those in normal controls.The increased BPV in daytime and decreased BPV at nighttime were all observed in three groups.Systolic BPV was higher than diastolic BPV.The parameters of BPV in stage Ⅱ were obviously higher than those in stage I.Conclusion: patients with hypertension have increased BPV.the increased BPV is relevant to the target organ damage.