Key result
Measuring orthostatic SBP at 3 minutes captures delayed abnormal changes in ~16% of elderly patients.
Why the study?
The effect of elapsed time after standing on orthostatic blood pressure change in the elderly was not well characterized.
Does the time elapsed after standing up affect the detection of orthostatic blood pressure change in elderly patients?
Population
237 community-dwelling elderly residents free from cardiovascular disease and not on medication
Comparison
Orthostatic blood pressure change at 1 minute vs 3 minutes after standing
Design
Cross-sectional study
Authors
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Measurement at 1 min may miss delayed orthostatic changes in elderly; leaves optimal repeated-measurement protocol open pending prospective validation.
Cross-Sectional (n=237)
No
Does the time elapsed after standing up affect the detection of orthostatic blood pressure change in elderly patients?
Orthostatic blood pressure should be measured at 1 minute after standing, with a repeated measurement at 3 minutes if the initial reading is normal, to accurately detect orthostatic dysregulation in the elderly.
Tabara et al. (2002) conducted a cross-sectional in Orthostatic blood pressure change (n=237). Time elapsed after standing up (3 minutes) vs. 1 minute after standing up was evaluated on Abnormal increase or decrease in systolic blood pressure (>10% change) observed only at 3 minutes after standing. Although maximum systolic blood pressure change occurred 1 minute after standing, 8.4% and 7.2% of elderly subjects exhibited abnormal increases or decreases only at 3 minutes, indicating the need for repeated measurements.
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