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Syncope. Identifying cardiac causes in older patients
Behzad B Pavri1, Reginald T Ho
1Jefferson Medical College, Thomas Jefferson University Hospital, Philadelphia, USA.
Geriatrics
|May 22, 2003
Summary
Syncope, a temporary loss of consciousness, can stem from various causes in older adults. Identifying the underlying reason is crucial for effective treatment and prognosis.
Area of Science:
- Cardiology
- Neurology
Background:
- Syncope is a transient loss of consciousness and postural tone, potentially indicating aborted cardiac arrest.
- Hypoperfusion of the reticular activating system is the common pathway for non-neurologic syncope.
- Older patients present diverse syncope etiologies, including orthostatic hypotension, medication effects, and cardiac conditions.
Purpose of the Study:
- To outline the diagnostic framework for syncope in older patients.
- To discuss the differential diagnoses and prognostic implications of syncope.
Main Methods:
- Detailed history and physical examination are essential initial steps.
- 12-lead electrocardiogram (ECG) aids in diagnosis for approximately 40% of cases.
- Echocardiography, electrophysiology testing, and head-up tilt table testing confirm diagnoses in most remaining patients.
Main Results:
- A confirmed cardiac cause of syncope is associated with a poorer prognosis.
- Approximately 25% of patients have an unidentifiable cause of syncope, yet a better prognosis than those with cardiac causes.
- Treatment strategies are tailored to the specific underlying etiology of syncope.
Conclusions:
- Syncope evaluation in older adults requires a systematic approach.
- Diagnostic tools like ECG, echocardiography, and tilt table testing are vital.
- Understanding the etiology is key to managing syncope and improving patient outcomes.