Relationship between blood pressure rhythm and cognitive impairments in the elderly
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摘要: 目的:探讨老年人群中血压昼夜节律与认知功能障碍之间的相关性。方法:随机纳入2016-01-2017-01在我院体检的老年人366例, 根据蒙特利尔认知评估 (MoCA) 量表评分, 分为认知正常组与认知障碍组, 比较两组一般情况, 合并症以及24h动态血压监测。结果:① 认知正常组夜间血压下降 (△MBP) 与认知障碍组比较差异有统计学意义 (0.07±0.07:0.09±0.10, P<0.05); ② 杓型组老年人MoCA总分高于非杓型组 (25.15±3.68:23.91±5.22, P<0.05)、超杓型组 (25.15±3.68:22.55±2.54, P<0.05)、反杓型组 (25.15±3.68:21.97±5.18, P<0.05), 非杓型组老年人MoCA总分则高于超杓型组 (23.91±5.22:22.55±2.54, P<0.05)、反杓型组 (23.91±5.22:22.55±2.54, P<0.05), 超杓型组老年人MoCA总分高于反杓型组 (22.55±2.54:21.97±5.18, P<0.05)。③ 血压昼夜节律异常是引起老年人群认知功能障碍的危险因素 (OR=2.437, 95%CI:1.48~4.012, P<0.05), 其中反杓型高血压老年人相对影响较大 (OR=5.305, 95%CI:1.814~15.514, P<0.05)。④ 高血压组中血压昼夜节律消失占77.0%, 对照组占76.4%。两组△MBP比较差异无统计学意义 (8.33±0.08:7.58±0.09, P>0.05)。结论:老年高血压患者和非高血压患者均会出现血压昼夜节律减弱或消失, 且血压节律异常是引起老年人群认知功能障碍的危险因素。Abstract: Objective: To evaluate the relationship between blood pressure rhythm and mild cognitive impairments.Method: The 24 hambulatory blood pressure monitoring and cognitive function were tested in 366 elderly in our hospital in January 2016-2017 January by the Montreal cognitive assessment (MoCA) scale.According to the results we analyzed the relationship between blood pressure rhythm and mild cognitive impairments.Result: ① There was a significantly difference between control group (Moca ≥ 26) and MCI group in △MBP% (0.07±0.07 vs 0.09±0.10, P<0.05); ② The total score of MoCA in the dipper group was higher than that in the non dipper group (25.15±3.68 vs 23.91±5.22, P<0.05), the super dipper group (25.15±3.68 vs 22.55±2.54, P<0.05), the anti dipper group (25.15±3.68 vs 21.97±5.18, P<0.05), and the total MoCA of the non dipper group was higher than that of the super dipper group (23.91±5.22 vs 22.55±2.54, P<0.05), and the anti dipper group.The total score of MoCA in the elderly dipper group was higher than that in the reverse dipper group (22.55±2.54 vs 21.97±5.18, P<0.05); ③ Abnormal blood pressure rhythm was a risk factor for mild cognitive impairments in the elderly (OR=2.437), and reverse-dipper blood pressure was relatively influential (OR=5.305) (P<0.05); ④ The blood pressure rhythm in the hypertension group was 77.0% and 76.4% in the control group.There was no significant difference between the two groups of△MBP%.Conclusion: hypertensive patients and non-hypertensive elderly both have a reduced or disappearance of 24 hambulatory blood pressure circadian rhythm, and abnormal blood pressure rhythm is a risk factor for mild cognitive impairments in the elderly.
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Key words:
- elderly /
- 24 h ambulatory blood pressure /
- blood pressure rhythm /
- cognitive impairment
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