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CARDIOVASCULAR DISEASE :: Diagnosing Heart Disease

Tilt Table Evaluation

A medical problem which can have many different causes is syncope (fainting). Syncope may occur rarely or frequently, depending on the cause. Some causes of syncope may include, but are not limited to, the following:

  • vasovagal syndrome - a sudden drop in blood pressure with or without a decrease in heart rate that is caused by a dysfunction of the nerves controlling the heart and blood vessels.
  • arrhythmia (or dysrhythmia) - a heart rate that is too slow, too fast, or too irregular to maintain adequate blood flow to the body.
  • valve disease - malfunction of one or more of the heart valves may cause an obstruction of the blood flow within the heart.

When a physician sees a child with a complaint of syncope, the physician will carefully evaluate the child's past medical history and perform a physical examination. If basic components of the examination or history do not reveal a potential cause for the syncope, and the child has no history of heart disease or a heart condition, then further diagnostic procedures, such as a tilt table procedure, may be scheduled.

What is a tilt table procedure?

The tilt table procedure attempts to identify the cause for the onset of syncope by making changes in posture from lying to standing. This is done by having the child lie flat on a special bed or table while connected to EKG and blood pressure monitors. The bed or table is then elevated to an almost standing position to simulate the patient actually standing up from a lying position. The blood pressure and EKG are measured during the test to evaluate changes during the position changes. If the test causes an episode of syncope, then the probable cause of the syncope is vasovagal syndrome. The physician can then prescribe specific treatment for the syncope once the cause is known.

If the test does not cause an episode of syncope, and/or the EKG and blood pressure recordings do not detect an abnormality, then additional tests or procedures may be scheduled to gather further diagnostic information.

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Online Resources of Cardiovascular Disorders

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It is important to remember the health information found on this website is for reference only not intended to replace the advice and guidance of your healthcare provider. Always seek the advice of your physician with any questions you may have regarding a medical condition. If you think you may have a medical emergency, call your physician or 911 immediately.
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