Key result
History, physical exam, and screening labs pinpoint the cause of syncope in ~50% of cases.
Why the study?
What is the optimal diagnostic approach for determining the etiology of syncope?
What is the optimal diagnostic approach for determining the etiology of syncope?
A structured diagnostic approach starting with a thorough history and physical examination is crucial for identifying the etiology of syncope.
Answers are grounded in this paper and cite their sources.
May prioritize history and exam to limit testing in syncope; leaves open prospective validation of yield and outcomes.
Etiologic diagnosis of syncope is best approached within the framework of three categories: cardiovascular, noncardiovascular, and unexplained. A meticulous history and physical examination plus screening laboratory studies will pinpoint a cause in nearly half of cases. In patients who have recurrent syncope, a history suggestive of dysrhythmia, or structural heart disease, further testing may include a variety of procedures such as 24-hour electrocardiographic monitoring, two-dimensional echocardiography, exercise stress testing, and electrophysiologic testing.
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Haddad et al. (1986) conducted a review in Syncope. A meticulous history, physical examination, and screening laboratory studies can pinpoint the cause of syncope in nearly half of cases, with further testing reserved for recurrent or high-risk cases.
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