Infrarenal Aortic Aneurism

[lindysturn]

My husband recently had a cat scan to diagnose fractured ribs.  This scan also found a 3.7 cm infrarenal aneurysm. He has cat scans approximately every 6 months due to a liver transplant, so this has appeared in only the last 6 months or so. My question is how fast will this grow and how dangerous is it?  If it burst what will happen? How long will we have to get him to the hospital? We live about 45 miles from the nearest hospital. He also has a stent in his circumflex artery? due to a 90% blockage 4 years ago. Is there any medication to treat this? Could it be causing a drastic rise in his blood pressure such as 189/128, pulse rate is never below 115 even in resting position.  What should our next step be?

Thanks for your help.