Head-up sleeping improves orthostatic tolerance in patients with syncope
Victoria L. CooperRoger HainsworthEmail author
Roger Hainsworth
December 2008, Volume 18, Issue 6, pp 318–324
1.Cardiorespiratory UnitSt James’s University HospitalLeedsUK
2.Institute for Cardiovascular ResearchUniversity of LeedsLeedsUK
15 October 2008
DOI: 10.1007/s10286-008-0494-8
Cooper, V.L. & Hainsworth, R. Clin Auton Res (2008) 18: 318. doi:10.1007/s10286-008-0494-8
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Abstract
Objectives
This study was designed to examine the effect of head-up sleeping as a treatment for vasovagal syncope in otherwise healthy patients. Treatment for syncope is difficult. Pharmacological treatments have potential side effects and, although other non-pharmacological treatments such as salt and fluid loading often help, in some cases they may be ineffective or unsuitable. Head-up sleeping may provide an alternative treatment.
Methods
Twelve patients had a diagnosis of vasovagal syncope based both on the history and on early pre-syncope during a test of head-up tilting and graded lower body suction. They then underwent a period of 3–4 months of sleeping with the head-end of their bed raised by 10°, after which orthostatic tolerance (time to pre-syncope during tilt test) was reassessed.
Results
Eleven patients (92%) showed a significant improvement in orthostatic tolerance (time to pre-syncope increased by 2 minutes or more). Plasma volume was assessed in eight patients and was found to show a significant increase (P < 0.05, Wilcoxon signed-rank test). There was no significant change in either resting or tilted heart rate or blood pressure after head-up sleeping.
Interpretation
Head-up sleeping is a simple, non-pharmacological treatment which is effective in the majority of patients. However, it may not be tolerated by patients or bed-partners long term and whether the effects continue after cessation of treatment remains to be determined.
Keywords
syncope head-up sleeping plasma volume blood pressure
link.springer.com/article/10.1007/s10286-008-0494-8