Why the study?
Does widening of the tracheal bifurcation angle on chest radiographs accurately predict left atrial enlargement in clinically stable patients?
Does widening of the tracheal bifurcation angle on chest radiographs accurately predict left atrial enlargement in clinically stable patients?
Widening of the tracheal bifurcation angle on chest radiographs is an insensitive and nonspecific sign of left atrial enlargement, offering little diagnostic value.
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Tracheal bifurcation angle on CXR should not guide left atrial enlargement assessment; leaves open validation of alternative radiographic markers.
Murray et al. (1995) studied this question.
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