What is orthostatic intolerance (OI)?

Two videos from the Bateman Horne Center in Utah, USA set out to explain orthostatic intolerance for health professionals and it’s role in ME/CFS.

There is sufficient evidence to suggest a high prevalence of orthostatic intolerance (OI) exists in those with ME/CFS. OI is measurable, and the ability to identify and manage OI can greatly improve patient outcomes and daily functioning.

Video 1: Defines OI, and discusses the physiology and testing for OI.

Video 2:  Describes findings of reduced cerebral blood flow. Treatments include hydration, compression clothing and medications. Possible causes of OI in ME/CFS are listed. [Duration 6 minutes each]