| Popis: |
Background: Hypertension has been shown to be a major risk factor for cognitive decline, but little is known about its association with subjective memory complaints (SMC) in late life. The study is to examine if hypertension is associated with SMC and to explore which blood pressure (BP) is more important in this group.Methods: 497 non-demented older adults aged 60 years or older were interviewed. Hypertension is defined as a BP higher than 130/80 mmHg or on antihypertensive medication. SMC are measured by a validated 5-item Abbreviate Memory Inventory for the Chinese (AMIC) assessing subjective memory deficits in the past month. Cognitive performance was measured by a neurocognitive battery assessing global cognitive function and executive function (EF). Linear regression was performed to examine how different BP associate with AMIC and cognitive performance with adjustment for sociodemographic and physical factors.Results: Hypertensive group had a lower AMIC than normal control (t=-2.1, p=.033). Systolic blood pressure (SBP) (B=-.008, 95% CI -.014 – -.002, p=.006) and mean arterial pressure (MAP) (B=-.011, 95% CI -.020– -.002 p=.014) were associated with AMIC. SBP was only associated global cognitive function (B= .008, 95% CI .000 – .015, p=.038), but MAP was associated with global cognitive function (B=.017, 95% CI .006 – .029, p=.003) and EF (B= 0.16, 95% CI .001 – .030, p=.036). Conclusions: High MAP was associated with better cognitive function in older adults with SMC. The findings highlight the need to be cautious when managing BP in older adults yet not to compromise their current cognitive function. |
