What problems can be detected by the upright tilt table test?

Generally, the upright tilt test can identify issues such as orthostatic hypotension, vasovagal syncope, autonomic nervous system dysfunction, cardiogenic syncope, and dizziness or vertigo of unknown causes. Detailed analysis is as follows:

1. Orthostatic Hypotension

Orthostatic hypotension refers to a significant drop in blood pressure upon changing from a lying position to an upright posture, which may cause symptoms such as dizziness or syncope. The upright tilt test can accurately measure blood pressure changes from lying to standing, aiding in the diagnosis and assessment of the severity of orthostatic hypotension.

2. Vasovagal Syncope

Vasovagal syncope is associated with abnormal neural reflexes. By simulating conditions that trigger syncope, such as upright posture and stress states, the upright tilt test observes changes in heart rate and blood pressure, helping to confirm whether the syncope is vasovagal in nature.

3. Autonomic Nervous System Dysfunction

The upright tilt test can assess the response of the autonomic nervous system during postural changes, aiding in the evaluation of autonomic dysfunction, such as multiple system atrophy or diabetic autonomic neuropathy.

4. Cardiogenic Syncope

Some patients with cardiogenic syncope may exhibit abnormal responses during the upright tilt test. For example, patients with arrhythmias may experience arrhythmia episodes under specific postures and physiological conditions, leading to syncope.

5. Dizziness or Vertigo of Unknown Origin

For patients who have experienced syncope of unknown origin, the upright tilt test can observe whether syncope and its associated physiological changes occur under specific conditions, providing clues for identifying the cause of syncope and assisting in developing further diagnostic and treatment plans.

After completing the test, it is recommended to lie flat and rest for a while until the body has stabilized before getting up. When rising, do so slowly to avoid dizziness or discomfort caused by sudden postural changes.