This prospective observational follow-up study is designed to assess the long-term outcomes after Venous thromboembolism (VTE) and to assess the effect of the new oral anticoagulant (NOAC) rivaroxaban on the prevalence of post-thrombotic syndrome (PTS). The study will not be testing any formal hypothesis.
This prospective observational follow-up study is designed to assess the long-term outcomes after VTE and to assess the effect of NOAC (rivaroxaban) on the prevalence of PTS. All patients diagnosed and treated for VTE at SØF from 01.01.2011 will be invited to participate in this study. Newly diagnosed patients will be recruited and followed-up according to the study schedule which is based on state of the art international guidelines. First follow-up will be performed at the end of treatment period, which is usually 3 or 6 months after an event of VTE, or at one year if patients will be put on permanent AC. Thereafter, patients will be followed-up annually for at least 5 years or up to the end of the study, i.e for 10 years. The primary endpoints of the study are the development of PTS and CTEPH after VTE. There will be 3 visits: at 3 or 6 months depending on the duration of AC, at 2 and 5 years, in addition to a visit for TTE at 6 months. Remaining follow-ups will be performed by phone or by mail. All patients with PE will be examined by TTE 6 months after the diagnosis of PE. Those with signs of PAH will be referred for further work-up to establish the presence or absence of CTEPH at specialized centres. Patients with DVT will be evaluated for PTS at 2 and 5 years and for CTEPH if they develop dyspnoea. As for part b of the primary objective, the study will allow inclusion of patients with previous DVT diagnosed after 01.01.11.
Study Type
OBSERVATIONAL
Enrollment
460
Akershus University Hospital
Lørenskog, Akershus, Norway
RECRUITINGUllevål University Hospital
Oslo, Oslo County, Norway
NOT_YET_RECRUITINGOstfold Hospital Trust
Fredrikstad, Østfold fylke, Norway
RECRUITINGPrevalence of post thrombotic syndrome and chronic thromboembolic pulmonary hypertension
Determine the prevalence of post thrombotic syndrome as defined by Villalta score at 2- and 5 years in an unselected population of venous thromboembolism patients. Prevalence of chronic thromboembolic pulmonary hypertension in at 2- and 5 years in an unselected population of pulmonary embolism patients.
Time frame: 5 years
Bleeding
Rate of bleeding during treatment with anticoagulation
Time frame: 9 years
Recurrence rate
Recurrence rate during treatment and after discontinuation of anticoagulation.
Time frame: 9 years
Mortality rate
Mortality rate following deep vein thrombosis and /or pulmonary embolism.
Time frame: 9 years
Severity of pulmonary embolism
Severity of PE based on CT (Fredrikstad score) and troponin level.
Time frame: 9 years
Incidence of cancer
Incidence of cancer after diagnosis of venous tromboembolism in screened and unscreened patients
Time frame: 9 years
Compliance in the use of Elastic compression stockings
Compliance in the use of Elastic compression stockings
Time frame: 9 years
Risk factors
Risk factors for venous thromboembolism
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: 9 years
Resource utilization
Resource utilization (number of contacts with health care providers, INR tests during anticoagulation)
Time frame: 9 years
Post thrombotic syndrome according to CEAP
PTS according to CEAP score
Time frame: 9 years