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Published on: May 3, 2018
Self-Measured Home Orthostatic Hypo- and Hypertension-Prevalence and Associations With Atherosclerosis and Arterial
F Frey1, P Af Geijerstam2, F Iredahl2,3
1Department of Internal Medicine and Department of Health, Medicine and Caring Sciences, Linkoping University, Norrköping, Sweden.
Insights
Self-measured home orthostatic hypotension and hypertension are linked to atherosclerosis markers. Home orthostatic hypotension also relates to arterial stiffness, highlighting the importance of monitoring blood pressure at home.
Area of Science:
- Cardiology
- Vascular Biology
- Public Health
Background:
- In-office orthostatic blood pressure (BP) dysregulation is a known cardiovascular risk predictor.
- The prevalence and atherosclerotic associations of home-measured orthostatic BP reactions are not well-established in large populations.
Purpose of the Study:
- To investigate the prevalence of home orthostatic hypotension (home OH) and home orthostatic hypertension (home OHT).
- To examine the association of home OH and home OHT with markers of atherosclerosis, including carotid plaques, pulse wave velocity (PWV), and coronary artery calcium score (CACS).
Main Methods:
- Cross-sectional analysis of 4556 participants from the Swedish CArdioPulmonary bioImage Study (SCAPIS).
- Home BP measurements included two standing BP readings using an Omron M10-IT device.
- Home OH defined as systolic BP drop ≥20 mmHg or diastolic BP drop ≥10 mmHg upon standing. Home OHT defined as systolic BP increase ≥20 mmHg upon standing.
Main Results:
- 6.4% of participants had home OH (n=293) and 3.1% had home OHT (n=139).
- Participants with home OH or home OHT showed higher prevalence of carotid plaques compared to those with normal reactions (65.5% and 64.7% vs. 55.3%).
- Home OH was associated with higher PWV (9.2±1.4 vs. 8.9±1.3 m/s) and increased likelihood of CACS ≥100 (17.4% vs. 11.6%). No significant associations were found for home OHT with PWV or CACS.
Conclusions:
- Self-measured home orthostatic hypotension and hypertension are associated with subclinical atherosclerosis.
- Home orthostatic hypotension specifically is linked to arterial stiffness, suggesting its clinical relevance beyond simple BP drops.
Background:
Orthostatic blood pressure (BP) dysregulation measured in-office predicts cardiovascular risk. However, the prevalence of self-measured home orthostatic hypo- and hypertension and their association with markers of atherosclerosis have not yet been described in a large sample of the general population.
Methods:
We performed cross-sectional analyses of home orthostatic BP reactions and pulse wave velocity (PWV), coronary artery calcium score (CACS), and carotid plaques in 4556 Swedish CArdioPulmonary bioImage Study (SCAPIS) participants who had performed home BP measurements and two home-standing BP measurements (Omron M10-IT device). Home orthostatic hypotension (home OH) was defined as a drop in BP after standing of systolic ≥20 mmHg or diastolic ≥10 mmHg, home orthostatic hypertension (home OHT) as an increase in systolic BP after standing of ≥20 mmHg.
Results:
Participants with home OH (n = 293, 6.4%) or OHT (n = 139, 3.1%) were more likely than participants with normal home orthostatic BP reactions to have ≥1 carotid plaque (65.5% and 64.7% vs. 55.3%, P < 0.001 and P = 0.027). Participants with home OH had higher PWV (9.2 ± 1.4 vs. 8.9 ± 1.3 m/s, P = 0.005) and were more likely to have CACS ≥ 100 (17.4 vs. 11.6%, P = 0.004). No such associations were observed for home OHT.
Conclusions:
Self-measured home orthostatic hypo- and hypertension were associated with markers of atherosclerosis, and home orthostatic hypotension was also associated with arterial stiffness.
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