Clinical Trial: Heparin-Induced Thrombocytopenia Registry

Study Status: Completed
Recruit Status: Completed
Study Type: Observational

Official Title: A 3 Year Retrospective Heparin Induced Thrombocytopenia Registry (HIT) at Brigham and Women's Hospital.

Brief Summary: The purpose of the Heparin Induced Thrombocytopenia Registry is to explore the frequency of heparin-induced thrombocytopenia (HIT) at Brigham and Women's Hospital and to assess its mortality rate. Retrospective 3 years, looking forward prospectively.

Detailed Summary:

Heparin-induced thrombocytopenia (HIT) is an immune-mediated adverse drug reaction with potentially fatal complications of venous and arterial thrombosis.

HIT with thrombosis causes prolonged hospital length of stay and is associated with catastrophic outcomes such as extremity amputation as well as death. The fear of HIT has led to some proposals to minimize hospital use of unfractionated heparin (UFH) and low molecular weight heparin (LMWH) and to substitute other anticoagulants that have not been reported to cause HIT. Therefore, the frequency of confirmed HIT and the frequency of determining whether UFH or LMWH is the causative agent urgently require further investigation.

At BWH, we have placed patient safety at a premium. We have a Patient Safety Committee and a Patient Safety Officer. HIT has been identified as one of the primary problems requiring urgent policy decisions. Consequently, we have formed a multi-disciplinary team of physicians, pharmacists, nurses and physician's assistants to improve safe medication practices for patients receiving anticoagulation.

Our primary objectives are to establish an HIT registry which will provide information on:

  1. Incidence of HIT associated with UFH and LMWH
  2. Outcomes of patients with HIT
  3. Adverse events associated with alternative anticoagulants used to treat HIT

We will obtain data with respect to: Drug, Dose, Route of administration, Duration of therapy, Platelet count, Platelet nadir, Co-morbidities (Coronary Artery Disease, Diabetes Mellitus, Myocardial Infarction, Hypertension, Pulmonary Disease, Chronic Renal Failure,
Sponsor: Brigham and Women's Hospital

Current Primary Outcome:

  • Incidence of HIT associated with UFH and LMWH [ Time Frame: 30 Days ]
  • Outcomes of patients with HIT [ Time Frame: 30 Days ]
  • Adverse events associated with alternative anticoagulants used to treat HIT [ Time Frame: 30 Days ]


Original Primary Outcome:

Current Secondary Outcome:

  • Mortality [ Time Frame: 30 Days ]
  • Hemorrhagic Events [ Time Frame: 30 Days ]
  • Thrombotic Events [ Time Frame: 30 Days ]


Original Secondary Outcome:

Information By: Brigham and Women's Hospital

Dates:
Date Received: April 2, 2007
Date Started: October 2005
Date Completion:
Last Updated: February 12, 2008
Last Verified: February 2008