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Trial · NCT04401293

Full Dose Heparin Vs. Prophylactic Or Intermediate Dose Heparin in High Risk COVID-19 Patients

NCT04401293, Phase 3, Completed, Northwell Health; results first posted 2021-11-22

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Full Dose Heparin Vs. Prophylactic Or Intermediate Dose Heparin in High Risk COVID-19 Patients. Trials, record NCT04401293. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT04401293

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Full Dose Heparin Vs. Prophylactic Or Intermediate Dose Heparin in High Risk COVID-19 Patients
NCT number
NCT04401293
Status
Completed
Phases
Phase 3
Enrollment
257 participants, actual
Lead sponsor
Northwell Health
Conditions
Sars-CoV2, COVID
Interventions
Enoxaparin, Prophylactic/Intermediate Dose Enoxaparin
First posted
2020-05-26
Last updated
2021-11-22
Results first posted
2021-11-22

Source ClinicalTrials.gov

Registered outcomes7

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryComposite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Day 30 ± 2 Days.Day 30 ± 2 days
Risk of arterial thromboembolic events (including myocardial infarction, stroke, systemic embolism), venous thromboembolism (including symptomatic deep vein thrombosis (DVT) of the upper or lower extremity, asymptomatic proximal DVT of the lower extremity, non-fatal pulmonary embolism (PE)), and all-cause mortality at Day 30 ± 2 days.
SecondaryMajor BleedingDay 30 ± 2 daysRisk of major bleeding defined using the International Society of Thrombosis and Haemostasis (ISTH) criteria
SecondaryComposite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Hospital Day 10 + 4Day 10 + 4
The composite of arterial thromboembolic events (including myocardial infarction, stroke, systemic embolism), venous thromboembolism (including symptomatic deep vein thrombosis (DVT) of the upper or lower extremity, asymptomatic proximal DVT of the lower extremity, non-fatal pulmonary embolism (PE)), and all-cause mortality at Hospital Day 10 + 4
SecondarySepsis-induced Coagulopathy (SIC) ScoreDay 30 ± 2 days.
Sepsis-induced coagulopathy (SIC) score predicts likelihood of sepsis-induced coagulopathy based on ISTH guidelines. The score uses the following domains: * Platelets, K/uL (thousands per microliter) * INR (International Normalized Ratio) * D-Dimer Level * Fibrinogen Platelet count \> 100 cells x 10\^9/L is 0 points, platelet count 50 to 100 cells x 10\^9/L is 1 point and Platelet count \< 50 cells x 10\^9/L is 2 points. INR \< 1.3 is 0 points, INR 1.3 to 1.7 is 1 point and INR \> 1.7 is 2 points. D-Dimer level \< 400 ng/mL is 0 points, D-Dimer level 400-4000 ng/mL is 2 points and D-Dimer level \> 4000 ng/mL is 3 points. Fibrinogen level \> 100 mg/dL is 0 points and fibrinogen level \< 100 mg/dL is 1 point. Calculated (SIC) scores yields a possible 0 to 6 points, where ≥4 predicts higher mortality rates within 30 days and greater risk of pulmonary embolism.
SecondaryProgression to Acute Respiratory Distress Syndrome (ARDS)Day 30 ± 2 days.Progression to Acute Respiratory Distress Syndrome (ARDS) based on monitoring of patient conditions.
SecondaryNeed for IntubationDay 30 ± 2 days.Need for Intubation will be based on monitoring of patient conditions.
SecondaryRe-hospitalizationDay 30 ± 2 days.Need for Re-hospitalization will be based on monitoring of patient conditions.

Outcomes7

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYComposite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Day 30 ± 2 Days.Day 30 ± 2 daysParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYMajor BleedingDay 30 ± 2 daysParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYComposite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Hospital Day 10 + 4Day 10 + 4ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYSepsis-induced Coagulopathy (SIC) ScoreDay 30 ± 2 days.
COVID-19 patients have been noted to have significantly elevated markers of hypercoagulability including d-dimer (Dd), fibrinogen levels, FVIII levels, short activated partial thromboplastin time (aPTT) and Sepsis-Induced Coagulopathy (SIC) scores with an increase in venous thromboembolic disease as well as cardiac injury.
units on a scaleMEAN
SECONDARYProgression to Acute Respiratory Distress Syndrome (ARDS)Day 30 ± 2 days.ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYNeed for IntubationDay 30 ± 2 days.ParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYRe-hospitalizationDay 30 ± 2 days.ParticipantsCOUNT_OF_PARTICIPANTS

Results by group14

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Composite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Day 30 ± 2 Days.Full Dose LMWH Anticoagulation Therapy25Participants
Composite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Day 30 ± 2 Days.Prophylactic/Intermediate Dose LMWH or UFH Therapy31Participants
Major BleedingFull Dose LMWH Anticoagulation Therapy6Participants
Major BleedingProphylactic/Intermediate Dose LMWH or UFH Therapy2Participants
Composite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Hospital Day 10 + 4Full Dose LMWH Anticoagulation Therapy2Participants
Composite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Hospital Day 10 + 4Prophylactic/Intermediate Dose LMWH or UFH Therapy3Participants
Sepsis-induced Coagulopathy (SIC) ScoreFull Dose LMWH Anticoagulation Therapy2.35Standard Deviation 0.73units on a scale
Sepsis-induced Coagulopathy (SIC) ScoreProphylactic/Intermediate Dose LMWH or UFH Therapy2.31Standard Deviation 0.85units on a scale
Progression to Acute Respiratory Distress Syndrome (ARDS)Full Dose LMWH Anticoagulation Therapy11Participants
Progression to Acute Respiratory Distress Syndrome (ARDS)Prophylactic/Intermediate Dose LMWH or UFH Therapy6Participants

Participant flow6

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDFull Dose LMWH Anticoagulation Therapy130
Overall StudySTARTEDProphylactic/Intermediate Dose LMWH or UFH Therapy127
Overall StudyCOMPLETEDFull Dose LMWH Anticoagulation Therapy129
Overall StudyCOMPLETEDProphylactic/Intermediate Dose LMWH or UFH Therapy124
Overall StudyNOT COMPLETEDFull Dose LMWH Anticoagulation Therapy1
Overall StudyNOT COMPLETEDProphylactic/Intermediate Dose LMWH or UFH Therapy3

Adverse events2

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
seriousThrombocytopeniaBlood and lymphatic system disordersFull Dose LMWH Anticoagulation Therapy21292
seriousThrombocytopeniaBlood and lymphatic system disordersProphylactic/Intermediate Dose LMWH or UFH Therapy01240

Adverse event totals6

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityFull Dose LMWH Anticoagulation Therapy25129
Total, all-cause mortalityProphylactic/Intermediate Dose LMWH or UFH Therapy31124
Total, other adverse eventsFull Dose LMWH Anticoagulation Therapy0129
Total, other adverse eventsProphylactic/Intermediate Dose LMWH or UFH Therapy0124
Total, serious adverse eventsFull Dose LMWH Anticoagulation Therapy2129
Total, serious adverse eventsProphylactic/Intermediate Dose LMWH or UFH Therapy0124

Papers5

The papers the trial lists on ClinicalTrials.gov.

PMIDListed asSource
33502773DERIVEDPubMed
33591017DERIVEDPubMed
34617959DERIVEDPubMed
35244208DERIVEDPubMed
37591523DERIVEDPubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons8

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

ComparisonSource
Full Dose LMWH Anticoagulation Therapy vs Prophylactic/Intermediate Dose LMWH or UFH Therapy: Re-hospitalizationTrial comparisons
Full Dose LMWH Anticoagulation Therapy vs Prophylactic/Intermediate Dose LMWH or UFH Therapy: Major BleedingTrial comparisons
Full Dose LMWH Anticoagulation Therapy vs Prophylactic/Intermediate Dose LMWH or UFH Therapy: Progression to Acute Respiratory Distress Syndrome (ARDS)Trial comparisons
Full Dose LMWH Anticoagulation Therapy vs Prophylactic/Intermediate Dose LMWH or UFH Therapy: Need for IntubationTrial comparisons
Full Dose LMWH Anticoagulation Therapy vs Prophylactic/Intermediate Dose LMWH or UFH Therapy: deaths from any causeTrial comparisons
Full Dose LMWH Anticoagulation Therapy vs Prophylactic/Intermediate Dose LMWH or UFH Therapy: Composite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Hospital Day 10 + 4
Trial comparisons
Full Dose LMWH Anticoagulation Therapy vs Prophylactic/Intermediate Dose LMWH or UFH Therapy: Composite Outcome of Arterial Thromboembolic Events, Venous Thromboembolic Events and All-cause Mortality at Day 30 ± 2 Days.
Trial comparisons
Full Dose LMWH Anticoagulation Therapy vs Prophylactic/Intermediate Dose LMWH or UFH Therapy: serious adverse eventsTrial comparisons

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT04401293

GET https://conductscience.org/api/trials/v1/NCT04401293/registered