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Hypertension. 2018 May;71(5):946-954. doi: 10.1161/HYPERTENSIONAHA.117.10542.

Longitudinal Association Between Orthostatic Hypotension at 30 Seconds Post-Standing and Late-Life Depression.

Author information

1
From the Irish Longitudinal Study on Ageing, Trinity College Dublin, Ireland (R.B., D.C., R.A.K.); Mercer's Institute for Successful Ageing, St James's Hospital, Dublin, Ireland (R.B., R.A.K.); and Age-Related Health Care, Tallaght Hospital, Dublin, Ireland (R.B., S.P.K.). briggsr@tcd.ie.
2
From the Irish Longitudinal Study on Ageing, Trinity College Dublin, Ireland (R.B., D.C., R.A.K.); Mercer's Institute for Successful Ageing, St James's Hospital, Dublin, Ireland (R.B., R.A.K.); and Age-Related Health Care, Tallaght Hospital, Dublin, Ireland (R.B., S.P.K.).

Abstract

There is an established cross-sectional association between orthostatic hypotension (OH) and late-life depression. The aim of this observational study was to clarify the longitudinal association between baseline symptomatic OH (sOH-30) and incident depression in a sample of >3000 older people without baseline depression (mean age: 62 years at baseline). This study was embedded within the Irish Longitudinal Study on Ageing using data from waves 1 to 3, collected between 2009 and 2014. At 2- and 4-year follow-up, a score ≥9 on the 8-item Center for Epidemiological Studies Depression Scale was used to define incident depression. sOH-30 was defined as a drop in systolic blood pressure ≥20 mm Hg or diastolic blood pressure ≥10 mm Hg at 30 seconds post-standing in conjunction with orthostatic symptoms, such as dizziness, using beat-to-beat measurements. Almost one fifth (proportion, 18%; 95% confidence interval [CI], 16-20) of the study sample had sOH-30. One tenth (proportion, 10%; 95% CI, 9-12) had incident depression. Participants with incident depression were twice as likely to have sOH-30 at baseline compared with those without incident depression (linear regression, 13% [95% CI, 8-19] versus 7% [95% CI, 6-8]). Weighted logistic regression models demonstrated that sOH-30 predicted incident depression with an odds ratio of 1.90 (95% CI, 1.15-3.15) after controlling for covariates, including subthreshold depression, hypotension, cognitive impairment, and antidepressant use. Asymptomatic OH at 30 seconds and initial OH did not predict depression. This study demonstrates that sOH-30 predicts incident depression in a population-representative sample of older people and may, therefore, represent a potentially modifiable risk factor for late-life depression.

KEYWORDS:

blood pressure; depression; dizziness; hypotension, orthostatic; risk factors

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