Open aortic valve surgery typically takes between two to five hours, while open abdominal aortic aneurysm repair surgery usually takes between two to four hours. The time duration of an aorta surgery varies depending on the type and difficulty of the surgery, according to MedlinePlus.
Open aortic valve surgery replaces the aortic valve in the heart, according to MedlinePlus. A damaged aortic valve causes irregular blood flow to and from the heart. Open abdominal aortic aneurysm repair surgery fixes a widened part of the aorta, called an aneurysm. Aortic aneurysms can rupture and cause internal bleeding, but some aneurysms do not cause any problems.