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Low Molecular Weight Heparin in Prevention of Recurrent Arteriovenous Graft Thrombosis in Chronic Hemodialysis Patients.

D

Dr. Sidney Ben Chetrit

Status and phase

Unknown
Phase 4

Conditions

Hemodialysis Patients

Treatments

Drug: Enoxaparin

Study type

Interventional

Funder types

Other

Identifiers

NCT01970280
0146-13-MMC (Other Identifier)

Details and patient eligibility

About

The aim of the study is to evaluate the effect of Enoxaparin (LMWH) on the incidence of AV graft thromboses in patients on chronic hemodialysis.

Primary efficacy end point of the study: to compare the time of onset of a new thrombotic event after successful angiography of the AV graft.

Pprimary safety outcome of the study: frequency of hemorrhage. Design and methods: Following a first AV graft thrombosis and successful thrombolysis with angioplasty, patients on chronic hemodialysis will be randomized to s.c Enoxaparin (Clexane) 0.5 mg/1kg of body weight per day or control group (not on Clexane). Patients will be followed for a year or till next AV graft thrombotic occlusion, if it occurs before. In both groups we will compare time periods in months between first and recurrent thrombotic events of AVG by evaluation the difference between two sample means. Also interim analysis of AV grafts patency between the two groups will be evaluated at different time points: three, six and twelve months after randomization. Patients in both groups will receive unfractionated heparin during dialysis session to prevent thrombosis of extracorporeal circulation. Patients from Enoxaparin group will receive a half dose (500 units/hour) to prevent possible risk of bleeding during the session. Before randomization all patients will be evaluated for hypercoagulability state which will include: Factor V Laden deficiency, Anti phospholipid antibodies (APLA), Antithrombin III deficiency and Protein C/S deficiency.

Enrollment

26 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • hemodialysis patients ≥ 18 years of age after occurrence of AVG thrombosis and successful thrombolysis/thrombectomy with angioplasty.

Exclusion criteria

  1. Known allergy to enoxaparin
  2. Persistent systolic blood pressure 180 or more and/or persistent diastolic blood pressure 100 or more
  3. Chronic Warfarin treatment
  4. Double antiagregant treatment (aspirin plus clopidogrel)
  5. Platelets count below 80000/µl
  6. Known HIT (Heparin Induced Thrombocytopenia)
  7. Recent bleeding (<2 weeks)
  8. Recent stroke (<4 weeks)
  9. Reduced mental status and inability to give informed consent

Trial design

Primary purpose

Prevention

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

None (Open label)

26 participants in 2 patient groups

Enoxaparin
Active Comparator group
Description:
Following a first AV graft thrombosis and successful thrombolysis with angioplasty, patients on chronic hemodialysis will be randomized to s.c Enoxaparin (Clexane) 0.5 mg/1kg of body weight per day or control group (not on Clexane).
Treatment:
Drug: Enoxaparin
Observation
No Intervention group

Trial contacts and locations

2

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Central trial contact

Ilan Rozenberg, MD

Data sourced from clinicaltrials.gov

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