Key result
Compression stockings significantly elevated supine systolic blood pressure in hypotensive women and attenuated the orthostatic response of systolic blood pressure to active standing.
Why the study?
Do compression stockings affect supine blood pressure and reduce orthostatic changes in systolic blood pressure in female non-hypertensive subjects?
Do compression stockings affect supine blood pressure and reduce orthostatic changes in systolic blood pressure in female non-hypertensive subjects?
Answers are grounded in this paper and cite their sources.
Compression stockings are effective in elevating supine systolic blood pressure in hypotensive subjects and reducing orthostatic blood pressure responses to active standing.
We investigated in female non-hypertensive subjects whether compression stockings affected systolic (SBP) and diastolic blood pressures (DBP) and heart rate (HR) and whether they were effective in reducing changes in SBP induced by active standing. Using an automatic ambulatory recording system, these hemodynamic parameters were measured during the Schellong test in 82 females between 23 and 78 years of age (46±2 years; mean±S.E.). Measurement was carried out every 2 min according to the following protocol which was repeated with and without stockings: (1) while in a supine position for 10 min, (2) immediately on assuming a standing position and while maintaining this standing position for 15 min, (3) immediately on reassuming a supine position, and (4) while maintaining this supine position for 5 min. Wearing compression stockings significantly elevated SBP in the supine position of the hypotensive (SBP≤100 mmHg; n=24) but not normotensive groups (140 mmHg>SBP>100 mmHg; n=58). DBP and HR were not significantly altered in either group. Active standing resulted in either an increase or decrease in SBP of various degrees. Therefore, subjects were divided into the following three subgroups depending on the orthostatic change in SBP (∠SBP) calculated as the difference between SBP immediately after active standing and supine SBP:∠SBP≥20 mmHg (n=10), 20>∠SBP≥0 mmHg (n=57), and 0 mmHg>∠SBP (n=15). In all the three groups, the absolute value of ∠SBP was significantly attenuated by the use of compression stockings. These effects of wearing stockings are not critically dependent on the age. We thus conclude that compression stockings are effective in elevating supine SBP of hypotensive subjects and in reducing the orthostatic response of SBP to active standing.
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Tezuka et al. (1997) studied Non-hypertensive (n=82). Compression stockings vs. Without stockings was evaluated on Systolic and diastolic blood pressures, heart rate, and orthostatic change in systolic blood pressure. Compression stockings significantly elevated supine systolic blood pressure in hypotensive women and attenuated the orthostatic response of systolic blood pressure to active standing.
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