The Effects of Short-Term Blood Pressure Variability and Nighttime Blood Pressure Levels on Cognitive Function

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We investigated the relationship between 24-h blood pressure (BP) and cognitive function. We performed the Hasegawa Dementia Scale Revised (HDSR), the Mini-Mental State Examination (MMSE), and the Raven's Coloured Progressive Matrices Test (RCPM) in 88 subjects (71±9 years) with no history of stroke. Ambulatory BP was non-invasively measured using a TM2421 for 24h in all patients. Whereas 90% of the scores converged into a narrow range between 25 and 30 points in the HDSR and the MMSE tests, the RCPM score was widely distributed, ranging from 9 to 36 points. The subjects were therefore divided into three groups of ≥25, 26-30, and 31-36 according to their RCPM scores. Subjects with lower scores were significantly associated with increased short-term BP variability during the daytime (<I>p</I><0.05) and had a tendency toward higher nighttime SBP (<I>p</I>=0.05) compared with those with higher scores. Increased short-term variability of daytime BP and high nighttime systolic BP were associated with cognitive impairment as assessed by the RCPM. The RCPM, which can assess the capacity for judgment through visual information processing, may detect earlier stages of cognitive impairment related to high BP. To prevent a deterioration of cognitive function, strict control of nighttime BP and suppression of short-term BP variability are thus necessary. (Hypertens Res 2001; 24: 19-24)

収録刊行物

  • Hypertension research : clinical and experimental : official journal of the Japanese Society of Hypertension

    Hypertension research : clinical and experimental : official journal of the Japanese Society of Hypertension 24(1), 19-24, 2001-01-01

    The Japanese Society of Hypertension

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各種コード

  • NII論文ID(NAID)
    10008741881
  • NII書誌ID(NCID)
    AA10847079
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09169636
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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