Is it possible for AAA repair to cause a hemopericardium?

Hemopericardium? In an open "surgical " repair central lines may be placed and the wires used to put them in may cause trouble like that. In many many repairs I have never heard of such an occurrence though.
Unlikely. Extremely unlikely. Aaas are below the diaphragm and separated from the pericardium.
Unlikely. AAA ( abdominal aortic aneurysm ) is unlikely to cause blood in the pericardium, ( hemopericardium ) possible in aortic arch aneurysms.

Related Questions

What can cause sepsis after elective open AAA repair? Is it negligence? Unsterile equipment? Can it happen even if everything was sterile?

Yes, it can. It is not possible to maintain absolute sterility. Even it were possible, we all develop transient bacteremia from brushing teeth, having bowel movement and the like, and these bacteria in blood can seed a surgical site and cause sepsis. Read more...
Many Causes. The ones you elucidated,as well as, blood born spread from a foreign location, erosion of the proximal suture line into the duodenum. Only laboratory, radio logical workup and possible exploration will give you the etiology This is life threatening complication so you need to be hospitalized under a vascular surgeons care right NOW. Read more...
Many causes. Everything can be done perfectly well and the patient can still become septic. AAA Patients tend not to be the healthiest. They often have multiple medical problems, hypertension, high cholesterol, diabetes, heart disease, kidney disease and often are smokers. That alone increases the patients risk for developing sepsis. This is a major operation on generally not healthy people. Read more...