Aortic Aneurysm Symptoms In Horses What Are The Symptoms Of An Aortic Aneurysm In A Horse?

What are the symptoms of an aortic aneurysm in a horse? - aortic aneurysm symptoms in horses

I am writing a book and a book by a horse died of an aortic aneurysm. If the horse is going to die, it is clear from shallow breathing and sighs? And what are the symptoms of a horse, an aortic aneurysm?