Abstract
In patients with acutely symptomatic but nonruptured abdominal aortic aneurysm (AAA), emergent repair is associated with an increased mortality rate as compared with semi-elective repair. Previous results have shown that ruptured but not asymptomatic AAA repair is associated with intense thrombin generation and inhibition of systemic fibrinolysis. The purpose of this study was to determine whether circulating markers of coagulation and fibrinolysis may be used to distinguish acutely symptomatic nonruptured and ruptured AAA. A prospective study was performed of 44 patients who underwent emergency AAA repair for suspected rupture. Platelet count, fibrinogen level, prothrombin time, activated partial thromboplastin time, tissue plasminogen activator (t-PA) activity, plasminogen activator inhibitor (PAI) activity, prothrombin fragment (PF) 1+2 level, and D dimer level were measured before surgery. When compared with ruptured AAAs (n = 37), acutely symptomatic nonruptured AAAs (n = 7) were associated with increased fibrinogen level (P =.033), reduced activated partial thromboplastin time (P =.043), increased t-PA activity (P =.023), reduced PAI activity (P =.005), reduced PF 1+2 level (P =.001), and reduced D dimer level (P =.005; a...Continue Reading
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