Relation between D-dimer level, venous valvular reflux and the development of post-thrombotic syndrome after deep vein thrombosis.
J Thromb Haemost
; 8(10): 2169-75, 2010 Oct.
Article
em En
| MEDLINE
| ID: mdl-20670369
ABSTRACT
BACKGROUND:
The pathophysiology of post-thrombotic syndrome (PTS) is postulated to involve persistent venous obstruction and venous valvular reflux.OBJECTIVE:
To study the association between D-dimer level, valvular reflux and the PTS in a well-defined cohort of deep vein thrombosis (DVT) patients.METHODS:
Consecutive patients with acute symptomatic DVT were recruited at eight centers and were followed for 24months. D-dimer was measured at 4months. A standardized ultrasound assessment for popliteal valvular reflux was performed at 12months. Using the Villalta scale, patients were assessed for PTS during follow-up by evaluators who were unaware of D-dimer or reflux results.RESULTS:
Three hundred and eighty-seven patients were recruited; of these, 305 provided blood samples for D-dimer and 233 had a 12-month reflux assessment. PTS developed in 45.1% of subjects. Mean D-dimer was significantly higher in patients with vs. without PTS (712.0 vs. 444.0µgL(-1) ; P=0.02). In logistic regression analyses adjusted for warfarin use at the time of D-dimer determination and risk factors for PTS, D-dimer level significantly predicted PTS (P=0.03); when stratifying for warfarin use at the time of blood draw, adjusted odds ratio (OR) for developing PTS per unit difference in log D-dimer was 2.33 (95% CI 0.89, 6.10) in those not on warfarin vs. 1.25 (95% CI 0.87, 1.79) in those on warfarin. Ipsilateral reflux was more frequent in patients with moderate-to-severe PTS than in patients with mild PTS (65% vs. 40%, respectively; P=0.01) and was independently associated with moderate-to-severe PTS in logistic regression analyses (P=0.01).CONCLUSION:
D-dimer levels, measured 4months after DVT in patients not on warfarin, are associated with subsequent development of PTS. Venous valvular reflux is associated with moderate-to-severe PTS.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Insuficiência Venosa
/
Produtos de Degradação da Fibrina e do Fibrinogênio
/
Trombose Venosa
/
Síndrome Pós-Trombótica
Tipo de estudo:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
J Thromb Haemost
Ano de publicação:
2010
Tipo de documento:
Article