Background and Purpose - Because thromboembolic events are frequently observed in primary antiphospholipid syndrome (PAPS), we assessed the risk factors for new thrombotic episodes. Methods - Fifty-six PAPS patients (mean age, 37(plus or minus)10 years) were prospectively studied for 5 years. The preliminary Sapporo classification criteria for antiphospholipid syndrome (APS; a medium-high anticardiolipin antibody [aCL] titer and/or a positive lupus anticoagulant [LA] test in the presence of vascular thrombosis and/or pregnancy morbidity) were used to confirm the diagnosis. Thrombotic episodes or pregnancy losses before a diagnosis of PAPS were considered events, and any new disease manifestation other than thrombocytopenia was considered a recurrent event. Only patients with objectively verified thrombotic events were included in the study. Results - Twenty-one new thrombotic events were observed in 15 subjects (26.8%), including 3 (5.4%) who died during the follow-up. The patients with IgG aCL levels of >40 IgG phospholipid unit (GPL-U) showed a higher incidence of new thrombotic events (43.3%) than those with levels of (less-than or equal to)40 GPL-U (7.7%). Univariate analysis identified a history of recurrent clinical events (P=0.004), a highly positive aCL titer (P=0.007), and the presence of cardiac abnormalities (P=0.036) as significant risk factors for new thrombotic events. A multivariate regression model confirmed that an IgG aCL titer of >40 GPL-U was an independent risk factor for thrombosis (odds ratio, 9.17; 95% confidence interval, 1.83 to 46.05). Conclusions - A high IgG aCL titer is the strongest predictor of new thrombotic events in PAPS patients. (copyright) 2005 American Heart Association, Inc.
|Titolo:||Thrombotic risk factors in primary antiphospholipid syndrome : a 5-year prospective study|
TURIEL, MAURIZIO (Primo)
|Parole Chiave:||adult ; antibody titer ; antiphospholipid syndrome ; article ; cause of death ; clinical education ; clinical feature ; confidence interval ; disease activity ; disease classification ; disease severity ; echocardiography ; female ; heart disease ; human ; incidence ; major clinical study ; male ; multivariate analysis ; pregnancy complication ; priority journal ; prospective study ; risk factor ; statistical model ; statistical significance ; thrombocytopenia ; thromboembolism ; thrombosis ; acenocoumarol ; acetylsalicylic acid ; anticoagulant agent ; antithrombocytic agent ; cardiolipin antibody ; immunoglobulin G ; lupus anticoagulant|
|Settore Scientifico Disciplinare:||Settore MED/09 - Medicina Interna|
|Data di pubblicazione:||2005|
|Digital Object Identifier (DOI):||10.1161/01.STR.0000170645.40562.09|
|Appare nelle tipologie:||01 - Articolo su periodico|