Is 50mm left atrial dilatation dangerous?

Question
Hello doctor,
Can you tell me if 50mm left atrial enlargement is dangerous? What is the treatment? Thank you doctor.
Nguyen Hoang Minh Nguyen (1989)
Answer
Answered by Master, Doctor Tran Hong Nhat - Interventional Cardiologist - Cardiovascular Center, Vinmec Central Park International General Hospital.
Hello,
With the question “Is 50mm left atrial enlargement dangerous? ", the doctor would like to answer as follows:
Left atrial enlargement is often not natural but is the result of other causes such as mitral stenosis or cardiomyopathy. Large left atrium, 50mm in size, is a sign of advanced disease that easily causes arrhythmia (atrial fibrillation).
Treatment method is mainly to treat the cause and when the atrium is so large, it cannot be reduced. Ideally, you should visit a cardiologist for specific advice and treatment.
If you still have questions about left atrial enlargement, you can go to a hospital of Vinmec Health System for further examination and advice. Thank you for trusting and sending questions to Vinmec. Wishing you lots of health.
Best regards!