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November 8, 2009
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Tilt-Table Test

Medical Author: Melissa Conrad Stöppler, MD
Medical Editor: William C. Shiel Jr., MD, FACP, FACR

What is the tilt-table test?

The tilt-table test is a simple, inexpensive, and informative test that can help identify the causes of fainting. As its name implies, the tilt table test involves placing a patient on a table with a foot-support, then tilting the table upward. The tilt-table may start off in a horizontal position and be tilted by degrees to a completely vertical position. The patient's blood pressure, pulse, and symptoms are monitored throughout the test.



Next: Why is the tilt-table test done? »

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  • Low Blood Pressure - Learn about low blood pressure (hypotension). Low blood pressure is blood pressure below normal and symptoms may include: lightheadedness, dizziness, fainting upon standing (orthostatic hypotension). There are many causes of low blood pressure, and treatment is dependant upon the cause.
  • Dizziness - Read about the causes of dizziness including low blood pressure, anemia, dehydration, vertigo, medications, alcohol use, and pregnancy. Diagnosis and treatment information is also included.
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Tilt -Table Test

Introduction to fainting (syncope)

Fainting, "blacking out," or syncope is the temporary loss of consciousness followed by the return to full wakefulness. This loss of consciousness is accompanied by loss of muscle tone that can result in falling or slumping over. To better understand why fainting can occur; it is helpful to explain why somebody is awake.

The brain has multiple parts, including two hemispheres, the cerebellum, and the brain stem. The brain requires blood flow to provide oxygen and glucose (sugar) to its cells to sustain life. For the body to be awake, an area known as the reticular activating system located in the brain stem needs to be turned on, and at least one brain hemisphere needs to be functioning. For syncope to occur, either the reticular activating system needs to lose its blood supply, or both hemispheres of the brain need to be deprived of blood, oxygen, or glucose. For the brain to stop functioning, th...

Read the Fainting (Syncope) article »










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