Abdominal Aortic Aneursym Flashcards
What is a true arterial aneurysm?
50% increase in normal diameter (1.2-2cm)
Risk factors for AA?
Male Hypertension FH Age Smoking PVD Cardiac disease Cerbrovascular disease Hypertension Hypercholesterolaemia Diabetes
Indications for AAA surgery?
> 5.5cm
Expanding more than 1cm per year
Symptomatic
Investigations for AAA
NHS screening for all men in their 65th year
Ultrasound vs CT scan for AAA?
Ultrasound for screening/to see if you have one
CT IS THE ONLY METHOD TO IDENTIFY RUPTURED AAA (do CT with contrast and scan during arterial phase)
EVAR
Exclude AAA from ‘inside’ the vessel
Inserted via peripheral artery
X-ray guided
Modular components
Open repair
Laparotomy
Clamp aorta + iliacs
Dacron Graft
Tube vs Bifurcated graft
Pathology of AAA
Medial degeneration
Law of Laplace
Management summary of AAA
Evaluation
Surveillance
EVAR/Open repair