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Published on: March 21, 2013
[Syncope]
1Medizinische Poliklinik, Departement für Innere Medizin, Universitätsspital Zürich.
Insights
Syncope, or fainting, often has an unknown cause. Cardiac syncope requires further investigation due to higher mortality risks, while newer treatments like cardiac pacing are emerging.
Area of Science:
- Cardiology
- Neurology
- Internal Medicine
Context:
- Syncope is a common clinical problem with diverse etiologies.
- A significant percentage of syncope cases remain undiagnosed.
- Cardiac syncope is associated with increased mortality.
Purpose:
- To review the diagnostic approaches for syncope.
- To highlight the importance of identifying cardiac causes of syncope.
- To discuss emerging therapeutic strategies for syncope.
Summary:
- Syncope can stem from cardiac, vascular, or cerebral issues, with causes unidentified in 50-60% of patients.
- Diagnosis often relies on patient history, physical exam, ECG, and Holter monitoring.
- Further tests are recommended primarily for suspected cardiac syncope due to its higher mortality risk.
Impact:
- Guides clinical decision-making in syncope evaluation.
- Emphasizes risk stratification for better patient outcomes.
- Informs about advanced treatment options for specific syncope types.
Abstract:
Syncope may be due to cardiac, vascular or cerebral disease. The cause of syncope is not established in up to 50-60% of cases. Where a diagnosis is possible, the patient's history, physical examination, ECG and prolonged ECG monitoring serve to establish the underlying disease in most cases. Additional diagnostic tests should only be performed in patients with possible cardiac syncope, since these cases show a higher mortality rate during follow-up than patients with non-cardiac syncope. Finally, newer therapeutical approaches, including permanent cardiac pacing in recurrent vasovagal syncope, are discussed.
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