A Study on 24-hour Ambulatory Blood Pressure in Normotensive Elderly, Living in a Local Home for the Aged.

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  • 老人ホーム在住者における血圧日内変動の検討　降圧薬非服用例における検討
  • ロウジン ホーム ザイジュウシャ ニ オケル ケツアツ ニチナイ ヘンドウ ノ
  • 降圧薬非服用例における検討

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Abstract

Ambulatory blood pressure (BP) was non-invasively monitored in 124 normotensive elderly, living in an old people's home at the annual health examination. Cases were divided into 41 cases<75 years (group A, mean age 70.6) and 83 cases≥75 years (group B, 82.7) for analysis of the office BP and 24-hour BP. Whole-day systolic BP in group B was significantly higher than those in the group A (p<0.02) although no significant differences were observed in diastolic BP and pulse rate. Separated analysis of whole-day BP into daytime and nighttime revealed that the nighttime systolic BP in the group B was significantly higher than those in group A (132.2±17.4% vs. 123.8±18.6mmHg, p<0.02) whereas no significant difference was observed in day-time systolic BP between two groups (136.6±14.9 vs. 132.1±14.4mmHg, n.s.). The day-night difference in systolic BP ended to be less in group B than in group A (4.5±11.6 vs. 8.2±12.2mmHg, p<0.10). The prevalence of nondippers, who had a higher nighttime systolic BP than daytime systolic BP were 24.4% of the group A and 30.1% of the group B. It was concluded that systolic BP during the nighttime increased with the ageing process after age 60, although that during daytime did not change.

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