A Phase 4 interventional study of Rivaroxaban and Diosmin in Deep Vein Thrombosis and Postthrombotic Syndrome, sponsored by Pirogov Russian National Research Medical University. Completed at 1 site in Russian Federation. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2021-02-04.
Sponsored by Pirogov Russian National Research Medical University · Phase 4, Interventional, and Treatment
The randomized clinical study aimed to assess the efficacy and safety of standard anticoagulation with rivaroxaban in combination with diosmin compared to the isolated use of standard rivaroxaban for prolonged therapy of acute femoro-popliteal deep vein thrombosis reflected the speed of deep vein recanalization and incidence of post-thrombotic syndrome.
Deep vein thrombosis is an acute inflammatory disease that affects vein wall and leads to the structural changes in the wall and valves reflected with chronic venous insufficiency that called postthrombotic syndrome (PTS).
Diosmin as a flavonoid agent has properties to reduce leukocyte-endothelial interaction and inflammatory response, that could reduce the damage to venous wall and valves.
The hypothesis of the study is based on assumption that diosmin combined with standard anticoagulation can improve outcomes of femoro-popliteal DVT due to increase speed of veins recanalization, decrease of vein wall inflammation and finally decrease the incidence of PTS at 6 month and 1 year after index DVT.
73 studies on the registry are indexed under Postthrombotic Syndrome; 21 are open to participants now.
This study's enrollment of 90 is close to the median of 95 across 46 interventional studies indexed under Postthrombotic Syndrome.
Browse Postthrombotic Syndrome studies →Pirogov Russian National Research Medical University is the lead sponsor of 57 studies on the registry; 15 are open to participants now.
Compared within Postthrombotic Syndrome, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Venous Thrombosis. The counts are of registry records indexed under each term, refreshed daily. How we classify →
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
treatment of deep vein thrombosis with anticoagulation (rivaroxaban), elastic compression stockings and additional prescription of diosmin
Drug: Rivaroxaban · Drug: Diosmin · Other: compression stockings
standard treatment of deep vein thrombosis with anticoagulation (rivaroxaban) and elastic compression stockings
Drug: Rivaroxaban · Other: compression stockings
15 mg b.i.d. for 3 weeks and then 20 mg q.d. up to 6 month
Also known as: xarelto
600 mg q.d. for 12 month
Also known as: flebodia
above knee stocking for 12 month
Number of Participants With Postthrombotic Syndrome as Determined by Villalta Score
Detection of the postthrombotic syndrome (PTS) was made according to the Villalta score (a combination of 5 subjective symptoms and 6 objective signs of chronic venous disease) ranged from 0 (no signs) to 33 scores (maximal severity). PTS defined as 5 and more scores; mild PTS as 5-9 scores; moderate PTS as 10-14 scores; severe PTS as 15 and more scores.
Time frame: 12 months
Number of Participants With Recurrent Symptomatic or Asymptomatic DVT
detection of any episode of recurrent DVT with or without clinical signs verified by duplex ultrasound
Time frame: 12 months
Number of Participants With Symptomatic Pulmonary Embolism
detection of symptomatic pulmonary embolism verified with CT pulmonary angiogram
Time frame: 12 months
The Value of Venous Clinical Severity Score
Venous Clinical Severity Score (VCSS) is a combination of subjective symptoms and objective signs of CVD aimed to assess the severity of disease and ranges from 0 (no signs and symptoms of CVD) to 30 (severe signs and symptoms of CVD)
Time frame: 12 months
The Value of Chronic Lower Limb Venous Insufficiency Questionnaire - 20 Items
Chronic Lower Limb Venous Insufficiency Questionnaire - 20 items (CIVIQ-20) is a venous specific questionnaire to assess the disease-specific quality of life (QoL). It contains 20 items of 1-5 scores, totally, from 20 (best QoL) to100 (worst QoL) scores.
Time frame: 12 months
Number of Participants With Full Recanalization of the Popliteal Vein
Full recanalization of popliteal vein suggests the residual venous obstruction (RVO) less than 20%. The RVO was assessed by duplex ultrasound and calculated as the vein cross-sectional diameter under the maximal compression divided on the diameter without any compression multiplied by 100%.
Time frame: 12 months
Extension of Residual Venous Obstruction by Marder Score
Residual venous obstruction (RVO) defined as a thrombotic masses occupying 20% and more of the vein cross-sectional diameter was measured by duplex ultrasound and calculated as the vein cross-sectional diameter under the maximal compression divided on the diameter without compression and multiplied by 100%. The extension of RVO was assessed by Marder score, the sum of all affected venous segments, evaluated by different scores (see Appendix of the Protocol), that ranged from 0 (no RVO) to 34 (RVO in all possible venous segments in one limb).
Time frame: 12 months
Adverse Events
any adverse events detected or suspected
Time frame: 12 months
Major Bleeding
according to the International Society of Thrombosis and Hemostasis (ISTH) definition, major bleeding defined as fatal bleeding, and/or symptomatic bleeding in a critical area or organ, such as intracranial, intraspinal, intraocular, retroperitoneal, intraarticular or pericardial, or intramuscular with compartment syndrome, and/or bleeding causing a fall in hemoglobin level of 20 g/L or 1.24 mmol/L or more, or leading to transfusion of two or more units of whole blood or red cells
Time frame: 12 months
Clinically Relevant Non-major Bleeding
any non-major bleeding requiring anticoagulant withdrawal, and/or performing haemostatic measures, and/or hospitalization, and/or an unscheduled medical appointment
Time frame: 12 months
Minor Bleeding
any non-major or non-clinically relevant bleeding does not require the suspension of therapy and changes in the patient's lifestyle
Time frame: 12 months
| Milestone | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Started | 45 | 45 |
| Completed | 45 | 45 |
| Not completed | 0 | 0 |
Detection of the postthrombotic syndrome (PTS) was made according to the Villalta score (a combination of 5 subjective symptoms and 6 objective signs of chronic venous disease) ranged from 0 (no signs) to 33 scores (maximal severity). PTS defined as 5 and more scores; mild PTS as 5-9 scores; moderate PTS as 10-14 scores; severe PTS as 15 and more scores.
| Participants | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Number of Participants With Postthrombotic Syndrome as Determined by Villalta Score | 3 | 22 |
detection of any episode of recurrent DVT with or without clinical signs verified by duplex ultrasound
| Participants | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Number of Participants With Recurrent Symptomatic or Asymptomatic DVT | 1 | 6 |
detection of symptomatic pulmonary embolism verified with CT pulmonary angiogram
| Participants | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Number of Participants With Symptomatic Pulmonary Embolism | 0 | 0 |
Venous Clinical Severity Score (VCSS) is a combination of subjective symptoms and objective signs of CVD aimed to assess the severity of disease and ranges from 0 (no signs and symptoms of CVD) to 30 (severe signs and symptoms of CVD)
| VCSS score | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| The Value of Venous Clinical Severity Score | 1.2 ± 1.1 | 4.4 ± 2.1 |
Chronic Lower Limb Venous Insufficiency Questionnaire - 20 items (CIVIQ-20) is a venous specific questionnaire to assess the disease-specific quality of life (QoL). It contains 20 items of 1-5 scores, totally, from 20 (best QoL) to100 (worst QoL) scores.
| CIVIQ-20 scores | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| The Value of Chronic Lower Limb Venous Insufficiency Questionnaire - 20 Items | 22.1 ± 3.3 | 28.8 ± 7.6 |
Full recanalization of popliteal vein suggests the residual venous obstruction (RVO) less than 20%. The RVO was assessed by duplex ultrasound and calculated as the vein cross-sectional diameter under the maximal compression divided on the diameter without any compression multiplied by 100%.
| Participants | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Number of Participants With Full Recanalization of the Popliteal Vein | 42 | 28 |
Residual venous obstruction (RVO) defined as a thrombotic masses occupying 20% and more of the vein cross-sectional diameter was measured by duplex ultrasound and calculated as the vein cross-sectional diameter under the maximal compression divided on the diameter without compression and multiplied by 100%. The extension of RVO was assessed by Marder score, the sum of all affected venous segments, evaluated by different scores (see Appendix of the Protocol), that ranged from 0 (no RVO) to 34 (RVO in all possible venous segments in one limb).
| Marder score | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Extension of Residual Venous Obstruction by Marder Score | 0.3 ± 1.0 | 1.9 ± 2.4 |
any adverse events detected or suspected
| Participants | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Adverse Events | 5 | 4 |
according to the International Society of Thrombosis and Hemostasis (ISTH) definition, major bleeding defined as fatal bleeding, and/or symptomatic bleeding in a critical area or organ, such as intracranial, intraspinal, intraocular, retroperitoneal, intraarticular or pericardial, or intramuscular with compartment syndrome, and/or bleeding causing a fall in hemoglobin level of 20 g/L or 1.24 mmol/L or more, or leading to transfusion of two or more units of whole blood or red cells
| Participants | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Major Bleeding | 0 | 0 |
any non-major bleeding requiring anticoagulant withdrawal, and/or performing haemostatic measures, and/or hospitalization, and/or an unscheduled medical appointment
| Participants | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Clinically Relevant Non-major Bleeding | 1 | 2 |
any non-major or non-clinically relevant bleeding does not require the suspension of therapy and changes in the patient's lifestyle
| Participants | Experimental: Rivaroxaban + Diosmin + Stockings | Control: Rivaroxaban + Stockings Only |
|---|---|---|
| Minor Bleeding | 2 | 2 |
Collected over 12 months. Non-serious events are listed at a 0% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Study Group | 0/45 (0%) | 0/45 (0%) | 5/45 (11.1%) |
| Control Group | 0/45 (0%) | 0/45 (0%) | 4/45 (8.9%) |
| Event | Study Group | Control Group |
|---|---|---|
| DispesiaGastrointestinal disorders | 2/45 | 0/45 |
| Clinically relevant non-major bleedingBlood and lymphatic system disorders | 1/45 | 2/45 |
| Minor bleedingBlood and lymphatic system disorders | 2/45 | 2/45 |
| Age, Continuous(years) | Experimental: Rivaroxaban + Diosmin + Stocking | Control: Rivaroxaban + Stockings Only | Total |
|---|---|---|---|
| Mean | 57.4 ± 13.8 | 60.2 ± 13.1 | 58.8 ± 13.4 |
| Sex: Female, Male(Participants) | Experimental: Rivaroxaban + Diosmin + Stocking | Control: Rivaroxaban + Stockings Only | Total |
|---|---|---|---|
| Female | 17 | 17 | 34 |
| Male | 28 | 28 | 56 |
| Race and Ethnicity Not Collected(Participants) | Experimental: Rivaroxaban + Diosmin + Stocking | Control: Rivaroxaban + Stockings Only | Total |
|---|---|---|---|
| Count of participants | — | — | 0 |
| Region of Enrollment(participants) | Experimental: Rivaroxaban + Diosmin + Stocking | Control: Rivaroxaban + Stockings Only | Total |
|---|---|---|---|
| Russia | 45 | 45 | 90 |
| Time to randomization(days) | Experimental: Rivaroxaban + Diosmin + Stocking | Control: Rivaroxaban + Stockings Only | Total |
|---|---|---|---|
| Mean | 3.4 ± 1.2 | 3.5 ± 1.6 | 3.5 ± 1.4 |
| Unprovoked DVT(Participants) | Experimental: Rivaroxaban + Diosmin + Stocking | Control: Rivaroxaban + Stockings Only | Total |
|---|---|---|---|
| Count of participants | 29 | 33 | 62 |
| Preexisting chronic venous disease(Participants) | Experimental: Rivaroxaban + Diosmin + Stocking | Control: Rivaroxaban + Stockings Only | Total |
|---|---|---|---|
| Count of participants | 23 | 32 | 55 |
| Thrombus burden(Marder score) | Experimental: Rivaroxaban + Diosmin + Stocking | Control: Rivaroxaban + Stockings Only | Total |
|---|---|---|---|
| Mean | 15.2 ± 4.7 | 11.6 ± 4.1 | 13.4 ± 4.7 |
PDFs hosted by the registry, ClinicalTrials.gov.
Plan to share: No
Ran from Dec 2017 to primary completion in Jul 2019, 19 months.
Results were first posted in Jan 2020, 5 months after primary completion.
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Studies of the drug tested here: Diosmin
Pirogov Russian National Research Medical University