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Related Experiment Videos

Using a tilt table to evaluate syncope.

W N Kapoor1

  • 1Department of Medicine, University of Pittsburgh Medical Center, Pennsylvania 15213, USA. kapoor@genmed.upmc.edu

The American Journal of the Medical Sciences
|February 26, 1999
PubMed
Summary
This summary is machine-generated.

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Upright tilt testing helps diagnose vasovagal syncope by provoking symptoms in a lab setting. While effective, test methods and treatments for syncope remain variable and lack standardization.

Area of Science:

  • Cardiology
  • Clinical Medicine

Background:

  • Upright tilt testing is a common diagnostic tool for syncope.
  • Neurally mediated syncope, or vasovagal syncope, is the most frequent response observed.
  • The American College of Cardiology provides guidelines for tilt testing indications, primarily for recurrent unexplained syncope.

Purpose of the Study:

  • To evaluate the diagnostic utility of upright tilt testing for syncope.
  • To review current methodologies, sensitivity, specificity, and reproducibility of tilt testing.
  • To discuss the variable treatment landscape for syncope.

Main Methods:

  • Utilizes upright tilt testing with angles of 60-80 degrees.
  • May involve drug-free testing followed by isoproterenol infusion.
  • Assesses for induced hypotension and/or bradycardia.

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Main Results:

  • Sensitivity ranges from 67-83%, specificity from 75-100%.
  • Positive responses observed in 50% without isoproterenol, 64% with isoproterenol.
  • Reproducibility of tilt testing results has been variable.

Conclusions:

  • Upright tilt testing is a valuable tool for diagnosing syncope, particularly vasovagal syncope.
  • Standardization of testing protocols and treatment strategies for syncope is needed.
  • Commonly used treatments include beta-blockers and fludrocortisone; pacemaker use is ill-defined.