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Kinetics of D-Dimers After Abdominal Surgery

This study has been completed.
Information provided by:
University of Zurich Identifier:
First received: March 21, 2007
Last updated: October 23, 2007
Last verified: October 2007

The purpose of this study is to investigate the natural kinetics of D-dimers that occur after abdominal surgery.

Natural Kicetics of d-Dimers After Surgery

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: The Kinetics of D-Dimers After Abdominal Surgery as a Function of the Invasiveness of Surgery

Further study details as provided by University of Zurich:

Estimated Enrollment: 90
Study Start Date: February 2007
Study Completion Date: October 2007
Detailed Description:

Venous thromboembolism (VTE) is a potentially fatal disease with an estimated incidence of 0.1%. One third of the VTE occur as pulmonal embolism with a mortality up to 25% (White RH. Circulation 107:2003)

Serum d-dimer levels are used as sensitive marker for the diagnosis of VTE (Kelly J et al. Arch Intern Med, 162: 2002). Because of its sensitivity, the determination of serum D-dimer levels is an accepted method to exclude VTE in the outpatient setting meaning that VTE may be excluded in case of normal D-dimer levels (Kelly J. Lancet 359: 2002). The specificity of the D-dimer testing, however, is low. This is true especially in the postoperative phase. The interpretation of elevated D-dimer levels in surgical patients remains elusive.

The natural kinetics of D-dimers after surgery is not known. The question to what extent D-dimer levels rise after surgery and how long it may take D-dimer levels to return to normal after surgery is not yet determined. This information is needed to be able to use D-dimer testing for VTE diagnosis in surgical patients.

In this study, D-dimer levels are measured in surgical patients immediately before (day 0) and repeatedly after surgery. D-dimer level measurement will be stopped after D-dimer levels returned to normal.


Ages Eligible for Study:   18 Years to 90 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • patients undergoing elective surgery

Exclusion Criteria:

  • age < 18 years
  • patients not speaking german
  • patients involved in another study
  • pregnancy
  • concommitant inflammatory disease
  • patients with oral anticoagulation
  • patients having received fresh frozen plasma
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00450528

Univeryity Hospital, Clinic for Visceral- and Transplantation Surgery
Zurich, Switzerland, 8091
Sponsors and Collaborators
University of Zurich
Principal Investigator: Daniel Dindo, MD University of Zurich
  More Information

No publications provided Identifier: NCT00450528     History of Changes
Other Study ID Numbers: StV 31-2006
Study First Received: March 21, 2007
Last Updated: October 23, 2007
Health Authority: Switzerland: Federal Office of Public Health

Keywords provided by University of Zurich:
kinetics processed this record on November 20, 2014