In the general population, obesity appears to be the most important risk factor for<unk> .<unk>  has been found to be correlated to body size, independent of obesity, meaning that<unk>  is more common in people with a naturally large body size. Also, a study found that<unk>  can occur as a consequence of atrial fibrillation (AF), although another study found that AF by itself does not cause<unk> . The latter study also showed that the persistent type of AF was associated with<unk> , but the number of years that a subject had AF was not. Obstructive sleep apnea (OSA) may be a cause of<unk>  in some cases. When an OSA event occurs, an attempt is made to breathe with an obstructed airway and the pressure inside the chest is suddenly lowered. The negative intrathoracic pressure may cause the left atrium to expand and stretch its walls during each OSA event. Over time, the repetitive stretching of the left atrium may result in a persistent<unk> .
Left atrial enlargement
Right atrial enlargement
Atrial enlargement
Aortic unfolding
Overriding aorta
Mitral facies
Mitral annular calcification
Left ventricular hypertrophy