Abstract
Pulmonary arterial thrombosis (PAT) may complicate the clinical course of pulmonary hypertension associated with congenital heart disease (so-called Eisenmenger syndrome, ES). In this study, variables were sought that could represent risk factors for the occurrence of this complication. Twenty patients aged 11 to 53 (median, 33) years were studied. The presence of PAT (spiral computed tomography angiography) was correlated with age, gender group, PAP, hematocrit, peripheral oxygen saturation (SpO(2)), and plasma levels of endothelial and coagulation dysfunction markers: von Willebrand factor antigen (vWF:Ag), tissue plasminogen activator (t-PA), and D-dimer (enzyme immunoassay). Patients were classified according to the presence (group 1, N=7), or absence (group 2, N=13) of PAT. Group 1 patients were older (42+/-8 vs. 27+/-10 years in group 2, p=0.0051), had lower SpO(2) (82+/-7% vs. 89+/-6% in group 2, p=0.0462) and increased D-dimer levels (637 vs. 149 ng/mL in group 2, median values, p=0.0235). A trend was observed toward an increase in vWF:Ag (125+/-29 vs. 103+/-18 U/dL in group 2, p=0.0789) and t-PA (15.7 vs. 9.4 ng/mL in group 2, median values, p=0.0689). Age was the main variable influencing the occurrence of PAT in mult...Continue Reading
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