Why the study?
Does an increased tracheal carinal angle on chest radiography predict left atrial enlargement as determined by echocardiography?
Does an increased tracheal carinal angle on chest radiography predict left atrial enlargement as determined by echocardiography?
A tracheal carinal angle greater than 100 degrees on chest radiography is an easy and reliable method for predicting significant left atrial enlargement (>5.0 cm).
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Carinal angle ≥100° on chest radiography may indicate left atrial enlargement; supports further study but should not yet change practice.
Volkan Taşkın (1991) studied this question.
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