Incidence and clinical predictors of deep vein thrombosis in patients hospitalized with heart failure in Japan.
ABSTRACT The aim of this study was to clarify the incidence and clinical predictors of deep vein thrombosis (DVT) in patients with congestive heart failure (CHF) in Japan.
Between January 2003 and January 2008, 161 patients were admitted to Mie University Hospital with a diagnosis of CHF and underwent venous compression ultrasonography. Of them, 18 patients (11.2%) were diagnosed with DVT. As defined by New York Heart Association (NYHA) functional class, class IV patients had a higher incidence rate of DVT than those in class II or III (class II: 3 patients (4.4%), class III: 2 patients (4.8%), class IV: 13 patients (25.5%), P<0.01). Multiple logistic regression analysis identified that NYHA functional class and poor collapsibility of the inferior vena cava on ultrasonography as independent predictors of DVT (odds ratios (OR) 3.74, 95% confidence interval (CI) 1.72-8.16, P<0.01 and OR 4.43, 95%CI 1.36-14.43, P<0.05, respectively). Therapy without anticoagulation also indicated a significant increase in DVT incidence in CHF patients (OR 3.71, 95%CI 1.13-12.18, P<0.05).
Patients with CHF have a high risk for DVT and the risk increases according to NYHA functional class, poor IVC collapsibility or therapy without anticoagulation.