Related Experiment Video
Updated: Apr 16, 2026

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
Published on: March 21, 2013
Spontaneous intracranial hypotension: trendelenberg just may be the answer
Krista K Koch1, Thomas J Moran2
1Naval Aerospace Medicine Institute, 340 Hulse Road, Pensacola, FL 32508.
Abstract:
Spontaneous intracranial hypotension may share some characteristics with the more common causes of headaches such as migraines or tension headaches, but its diagnosis and treatment is much more laborious and invasive. Here, the case of a 31-year-old man with multiple weeks of positional headaches is described. This symptom persisted following multiple blood patches, and progressed to worsening mental status, encephalopathy, and eventually obtundation with Glascow Coma Score less than 8. Surgery was required; however, small improvement was seen on imaging or in the patient's status. When the patient's position was changed to 20 degrees of Trendelenberg, immediate improvement was seen, leading to a full recovery. Although epidural blood patch is considered the treatment mainstay for spontaneous intracranial hypotension, this case shows another factor to consider in the treatment of this difficult condition.
Related Concept Videos
Alterations in Blood Pressure
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart...
Venous Thrombosis III: Interprofessional Care
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Anatomical Positions
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
Venous Thrombosis IV: Nursing Management
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.

