An Observational Study On The Safety And Tolerability Of Prolonged Thrombosis Prophylaxis With Fragmin®

February 24, 2012 updated by: Pfizer

An Observational Study On The Safety And Tolerability Of Prolonged Thrombosis Prophylaxis With Fragmin® (Dalteparin Sodium) In Patients Undergoing Major Orthopedic Surgery

The objective of this study is to observe the safety, tolerability, and compliance in the use of Fragmin® for prolonged thromboprophylaxis in post-surgery high-risk orthopedic patients.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

All patients prescribed Fragmin® (Dalteparin Sodium) for prolonged thromboprophylaxis will be eligible for study

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
503

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

The adult population (women and men) after major orthopedic surgery.

Description

Inclusion Criteria:

  • Male or female patient, undergoing major orthopedic surgery
  • At least 18 years old

Exclusion Criteria:

  • Hypersensitivity to Fragmin or other low molecular weight heparins or unfractioned heparin;
  • History of heparin induced thrombocytopaenia type II
  • Acute gastroduodenal ulcer, cerebral haemorrhage, or other active haemorrhage.
  • Serious coagulation disorder;
  • Septic endocarditis;
  • Injuries to and operations in the central nervous system, eye and ear within one month before orthopaedic surgery;
  • Spinal or epidural anesthesia or other procedures requiring spinal puncture and concomitant treatment with high doses of dalteparin (such as those needed to treat acute deep vein thrombosis, pulmonary embolism, and Unstable coronary artery disease);
  • Patients with serum creatinine level > 150 umol/l;
  • Platelet count of less than 100 000 per cubic millimeter at the beginning of the therapy;
  • High probability that patient will not return to the centre for follow-up;
  • Patient on oral anticoagulation therapy in the last 7 days;
  • Ongoing anticoagulant therapy with other medications or non-pharmacologic therapy during the study period;
  • Weight less than 40 kg;
  • Simultaneous participation in another pharmacological study or receiving any investigational drug 30 days or less before surgery;
  • Pregnancy or breastfeeding;
  • Clinically significant hepatic dysfunction.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
1
Drug: Fragmin® (Dalteparin Sodium)
Administered per prescribing physician

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Physician's Assessment of Efficacy of Treatment
Time Frame: Baseline up to Week 5
Efficacy of treatment as assessed by physician was evaluated on the 5 point categorical scale: excellent, very good, good, fair, poor.
Baseline up to Week 5

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Participant's Dosage Regimen
Time Frame: Baseline up to Week 5
Approved dosage regimens for Fragmin in major orthopedic surgery included; (1): first dose of Fragmin 5000 IU in the evening before the day of surgery, followed by daily doses of 5000 IU up to 5 weeks; (2): first dose of Fragmin 2500 IU 2 hours before surgery, and a second dose of 2500 IU 8 to 12 hours later, not earlier than 4 hours after surgery, followed by daily doses of 5000 IU up to 5 weeks or (3): first dose of Fragmin 2500 IU 4 to 8 hours postoperatively, followed by daily doses of 5000 IU up to 5 weeks.
Baseline up to Week 5
Number of Participants With Risk Factors
Time Frame: Baseline
Risk factors evaluated for vascular thromboembolism (VTE) were age (above 40 years, but age was not a strong risk factor as a prediction of potential VTE episode), gender (primarily females but males after 65 years also influenced VTE episode), obesity, pregnancy, liver disease, kidney disease, hormone therapy, immobilization, previous surgery, concomitant malignant disease, positive family history, varicose veins, smoking, chemotherapy, catheter in vein, Heart Failure III New York Heart Association (NYHA) and Heart Failure IV NYHA.
Baseline
Number of Participants With Thromboembolism
Time Frame: Baseline up to Week 5
Thromboembolism is the formation of blood clot in the blood vessels due to an embolus (a detached intravascular mass capable of clogging arterial capillary beds at a site far from its origin).
Baseline up to Week 5
Number of Participants With Bleeding
Time Frame: Baseline up to Week 5
Major bleeding: defined as fatal bleeding, clinically overt bleeding causing a fall in hemoglobin more than or equal to 20 gram/litre (g/L) (2 g/decilitre [dL]), clinically overt bleeding leading to transfusion of more than or equal to 2 units of whole blood or red cells, or symptomatic bleeding in areas of special concern (intracranial, retroperitoneal, intraocular, intraspinal, pericardial, intramuscular with compartmental syndrome, or intraarticular). Minor bleeding was defined as bleeding that did not meet the definition of major bleeding.
Baseline up to Week 5
Participant's Global Evaluation of Treatment
Time Frame: Baseline up to Week 5
Participant's global evaluation of treatment for overall response and comfort was evaluated on the four point categorical scale: excellent, good, fair and poor.
Baseline up to Week 5
Physician's Assessment of Tolerability of Treatment
Time Frame: Baseline up to Week 5
Tolerability of treatment as assessed by physician was evaluated on the five point categorical scale: excellent, very good, good, fair, poor.
Baseline up to Week 5
Administration Schedule of Treatment
Time Frame: Baseline up to Week 5
Administration schedule for Fragmin in major orthopedic surgery Included was categorized as; (1): first dose of Fragmin 5000 IU in the evening before the day of surgery, followed by daily doses of 5000 IU up to 5 weeks; (2): first dose of Fragmin 2500 IU 2 hours before surgery, and a second dose of 2500 IU 8 to 12 hours later, not earlier than 4 hours after surgery, followed by daily doses of 5000 IU up to 5 weeks or (3): first dose of Fragmin 2500 IU 4 to 8 hours postoperatively, followed by daily doses of 5000 IU up to 5 weeks.
Baseline up to Week 5
Number of Participants Compliant With the Treatment
Time Frame: Baseline up to Week 5
Compliance was defined as participants documented with Dalteparin Sodium up to 5 weeks after initiation of thromboprophylaxis.
Baseline up to Week 5
Number of Participants With Hematoma
Time Frame: Baseline up to Week 5
Hematoma is a localized collection of blood outside of a blood vessel. It includes subcutaneous hematoma and injection-site hematoma.
Baseline up to Week 5

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Pfizer

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2010

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 1, 2011

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 1, 2011

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 4, 2010

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 11, 2010

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
January 12, 2010

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 27, 2012

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 24, 2012

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
February 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • A6301085

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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