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CompletedNCT02247414ESWAPHUpdated Mar 29, 2019

Warfarin Prevents Portal Vein Thrombosis in Patients After Laparoscopic Splenectomy and Azygoportal Disconnection

A Phase 4 interventional study of Warfarin and Dipyridamole in Cirrhosis, Hypertension and Status;Splenectomy, sponsored by Yangzhou University. Completed at 1 site in China. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2019-03-29.

Sponsored by Yangzhou University · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
124
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
All
01

Study summary

The purpose of this study is to determine whether Warfarin Anticoagulation are effective and safe in Prevention of Portal Vein Thrombosis in Liver Cirrhotic Patients after Laparoscopic Splenectomy and Azygoportal Disconnection for Portal Hypertension

Read the detailed description

After successful screening the cases of cirrhosis of liver irrespective of the etiology who have non tumor portal vein thrombosis will be enrolled. The baseline Doppler parameter will be recorded and the patient will be randomized into either interventional (warfarin) or control (aspirin) group. From postoperative day 3, patients in interventional (warfarin) group will receive oral Warfarin 2.5mg qd with titration of dose to maintain a target INR of 2-3 for 1 year, patients in control (aspirin) group will receive oral Aspirin Enterie Ccoated Tablets 100mg qd for 1 year, and both groups will be along with five days of subcutaneous injection of Low Molecular Weight Heparin and three months of oral Dipyridamole. Every 3 months the Doppler screening for the occurrence of portal vein thrombus (PVT) or spleno-mesenteric thrombosis will be done for all patients. Both groups will receive the therapy for one year irrespective of the Doppler findings in relation to portal vein thrombus occurrence. Then one year monitoring will be done in the both groups as per the primary or secondary outcome.

02

Conditions studied

  • Cirrhosis
  • Hypertension
  • Status;Splenectomy
  • Venous Thrombosis

Keywords

  • Cirrhosis
  • Hypertension
  • venous thrombosis
  • Warfarin
  • Splenectomy
  • Azygoportal Disconnection
  • Laparoscopy
03

In context

Hypertension

6,689 studies on the registry are indexed under Hypertension; 965 are open to participants now.

This study's enrollment of 124 is above the median of 90 across 4,995 interventional studies indexed under Hypertension.

Browse Hypertension studies →

Lead sponsor

Yangzhou University is the lead sponsor of 40 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • A clinical, radiological or histologic diagnosis of cirrhosis of any etiology
  • Splenomegaly with secondary hypersplenism
  • Bleeding portal hypertension
  • INo evidence of PVT or spleno-mesenteric thrombosis by ultrasound evaluation and angio-CT
  • Informed consent to participate in the study

Exclusion criteria

Exclusion Criteria:

  • Hepatocellular carcinoma or any other malignancy
  • Hypercoagulable state other than the liver disease related
  • DRUGS- oral contraceptives, anticoagulation or anti-platelet drugs
  • Base line INR >2
  • Child-Pugh grade C
  • Recent peptic ulcer disease
  • History of Hemorrhagic stroke
  • Pregnancy
  • Uncontrolled Hypertension
  • Age>75 yrs
  • Human immunodeficiency virus (HIV) infection
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
124 participants (actual)

Study arms

  • Experimental
    Warfarin with dipyridamole

    From postoperative day 3, patients will receive dipyridamole 25mg tid for three months along with subcutaneous Low Molecular Weight Heparin Calcium injection for first five days and Warfarin 2.5mg qd with titration of dose to maintain a target INR of 2-3. Intially the INR will be monitored twice weekly with gradual escalation of dose to achieve target INR. After achieving the target INR, this is to be repeated every 4 weeks. The Doppler Ultra Sonography screening will be done every 3 months to assess the occurrence of portal vein thrombus, but the medications will be continue for one year irrespective of the occurrence of portal vein thrombus.

    Drug: Warfarin · Drug: Dipyridamole · Drug: Low Molecular Weight Heparin

  • Active comparator
    Aspirin with dipyridamole

    From postoperative day 3, patients will receive oral dipyridamole 25mg tid for three months along with subcutaneous injection of Low Molecular Weight Heparin (4100 IU) for first five days and Aspirin Enterie Ccoated Tablets 100mg qd for one year.

    Drug: Dipyridamole · Drug: Aspirin · Drug: Low Molecular Weight Heparin

Interventions

  • DrugWarfarin

    From postoperative day 3, patients will receive oral Warfarin 2.5mg qd with titration of dose to maintain a target INR of 2-3 for 1 year.

    Also known as: Warfarin Sodium, Athrombine, COUMADIN, PANAWARFIN

  • DrugDipyridamole

    From postoperative day 3, patients will receive oral dipyridamole 25mg tid for three months.

    Also known as: Gardoxin, Coribon, Curantyl, Dilaplus

  • DrugAspirin

    From postoperative day 3, patients will receive oral Aspirin Enterie Ccoated Tablets 100mg qd for 1 year.

    Also known as: Acenterine, Acetard, Acetophen

  • DrugLow Molecular Weight Heparin

    From postoperative day 3, patients will receive subcutaneous injection of Low Molecular Weight Heparin (4100 IU) once daily for first five days.

    Also known as: Fraxiparine

06

What researchers measure

Primary outcomes

  1. Proportions of patients who will suffer PVT or spleno-mesenteric thrombosis between oral anticoagulant Warfarin with dipyridamole group and oral Aspirin with dipyridamole group during the study period of 3 year from randomization

    Time frame: 3 years

Secondary outcomes

  1. Proportions of patients who will show improvement in Child Pugh (>2 points)in both groups

    Time frame: 3 years

  2. Proportions of patients who will show improvement in Model for End Stage Liver Disease (MELD)(>4 points)in both groups

    Time frame: 3 years

  3. Proportions of patients who will show decrease in hepatic decompensation defined as development of ascites, PSE, portal hypertensive bleeding, jaundice, spontaneous bacterial peritonitis, or systemic infection

    Time frame: 3 years

  4. Proportions of patients who will suffer from hepatocellular carcinoma in both groups

    Time frame: 3 years

  5. Overall survival in both groups

    Time frame: 3 years

07

Study locations

1 site
  • Clinical Medical College of Yangzhou University
    Yangzhou, Jiangsu 225001, China
08

References and documents

Publications

  • Wu LF, Bai DS, Shi L, Jin SJ, Zhou BH, Jiang GQ. Predictors of portal vein thrombosis after laparoscopic splenectomy and azygoportal disconnection in hepatitis B cirrhosis: a prospective study. Surg Endosc. 2022 Jun;36(6):4090-4098. doi: 10.1007/s00464-021-08730-5. Epub 2021 Sep 13. PubMed 34518951 ↗
  • Bai DS, Zhou BH, Qian JJ, Zhang C, Jin SJ, Jiang GQ. Effects of laparoscopic splenectomy and azygoportal disconnection on liver synthesis function and cirrhosis: a 2-year prospective study. Surg Endosc. 2020 Nov;34(11):5074-5082. doi: 10.1007/s00464-019-07307-7. Epub 2019 Dec 9. PubMed 31820157 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 29, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02247414
Lead sponsor
Yangzhou University
Responsible party
Guo-Qing Jiang (Master, Yangzhou University) — Principal investigator
First posted
Sep 25, 2014
Start date
Sep 2014
Primary completion
Sep 2017
Completion
Apr 2018
Last update
Mar 29, 2019

Study contacts

Dou-Sheng Bai, MD
study chair · Clinical Medical College of Yangzhou University
Guo-Qing Jiang, MS
study director · Clinical Medical College of Yangzhou University
Ping Chen, MD
principal investigator · Clinical Medical College of Yangzhou University
Sheng-Jie Jin, MS
principal investigator · Clinical Medical College of Yangzhou University

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Mar 2019. You cannot join it, but the record below documents what was studied.

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