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Papers of the Week
Right-to-left shunts in unexplained syncope: an age- and sex-matched case-control study.
Authors
Abstract
Syncope is common, but there is no clear cause for half of the patients diagnosed with syncope. Although suspected, there is limited evidence that right-to-left shunt (RLS) is related to syncope. This matched case-control study investigated the association between RLS (exposure) and unexplained syncope (outcome).