Conversation: The conversation between human and AI assistant.
[|Human|] Yes, I have Marfan s and I ve been on atenolol for years. My aorta is 3.9 and today at my 6 month check up , my cardiologist wanted to put me on losartan 25 mg. I am scheduled for an echo next week, what if it has increased in size, will it hel p?
[|AI|]  Hello! Thank you for asking on Chat Doctor! I understand your concern and would like to explain to you that Marian syn Chat Doctor.  Aortic wall consistency may be damaged, manifested with aortic dilatation and aneurysms, sometimes leading to aortic wall dissection. Thus, it is of utmost importance to follow up aortic dimensions and structure, in order to be right in time for any needed intervention. Facing your actual aortic diameter, seems that it is around the upper limit of normal. So, you have to be very careful with your hypertensive therapy. Beta-blockers (Atenolol) are the main stay of therapy. You have to follow your doctor advice to start Losartan even at a higher dose, if it is judged necessary for controlling blood pressure. To may try other antihypertensive medications as well (always under medical advice and supervision). If aortic diameter increases more than 50-55 mm, despite appropriate therapy, then a strict supervision for a near and potential aortic surgery would be necessary (to avoid a fatal aortic dissection and rupture). Hope to have been helpful. Greetings!