It can broadly be classified as either right atrial hypertrophy (RAH), overgrowth, or dilation, like an expanding balloon.

[1] Right atrial enlargement (RAE) is clinically significant due to its prevalence in diagnosing supraventricular arrhythmias.

[2] Treatment for RAE can include taking certain medications such as diuretics, beta-blockers, anticoagulants, and anti-arrhythmics.

Exercise, pregnancy, and prior health conditions like ASD II can also promote cardiac remodeling, so routine primary care visits are important to distinguish between physiological and pathological atrial enlargement.

[5][6] Regular primary care visits and routine testing has also been shown to protect against the development of cardiovascular disease and may play a key role in early identification and treatment.