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Diagnostic evaluation and management of syncope.
1University of Michigan Medical Center, Ann Arbor.
Current Opinion in Cardiology
|February 1, 1991
Summary
Syncope, a common cause of hospital admissions, requires accurate diagnosis. Cardiovascular syncope poses a high risk of sudden cardiac death, necessitating specific diagnostic tools like electrophysiologic and tilt-table testing.
Area of Science:
- Cardiology
- Clinical Medicine
- Diagnostic Procedures
Background:
- Syncope affects up to 30% of adults and accounts for 6% of hospital admissions.
- Cardiovascular syncope is linked to a high risk of sudden cardiac death.
- Initial history and physical exams are often insufficient for diagnosis.
Purpose of the Study:
- To review the diagnostic utility of electrophysiologic testing and tilt-table testing for syncope.
- To highlight the importance of identifying cardiovascular syncope.
- To discuss the role of these tests in risk stratification and therapy guidance.
Main Methods:
- Review of diagnostic procedures for syncope, focusing on electrophysiologic testing and tilt-table testing.
- Analysis of the diagnostic yield and prognostic value of these investigations.
- Discussion of their application in cases of suspected cardiovascular or vasopressor syncope.
Main Results:
- Electrophysiologic testing offers the highest diagnostic yield in patients with structural heart disease.
- Negative electrophysiology results predict a very low incidence of sudden cardiac death.
- Tilt-table testing aids in diagnosing vasopressor syncope, even with atypical histories, and can guide treatment.
Conclusions:
- Electrophysiologic and tilt-table testing are crucial for diagnosing and managing syncope, particularly cardiovascular causes.
- These diagnostic tools are essential for risk stratification, including predicting sudden cardiac death.
- Accurate diagnosis through these methods allows for targeted therapy and improved patient outcomes.