The Christopher Study: effective management of pulmonary embolism by clinical decision rule (CDR), D-dimer test and helical computed tomography (CT)

ISRCTN ISRCTN56430379
DOI https://doi.org/10.1186/ISRCTN56430379
Secondary identifying numbers NTR581
Submission date
04/04/2006
Registration date
04/04/2006
Last edited
05/11/2008
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Circulatory System
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Not provided at time of registration

Contact information

Dr M V Huisman
Scientific

Leiden University Medical Centre (LUMC)
Department of General Internal Medicine, C2-R
P.O. Box 9600
Leiden
2300 RC
Netherlands

Phone +31 (0)71 625 9111
Email m.v.huisman@lumc.nl

Study information

Study designProspective cohort study
Primary study designObservational
Secondary study designCohort study
Study setting(s)Hospital
Study typeScreening
Scientific title
Study acronymChristopher Study
Study objectivesIt is safe to withhold anticoagulant treatment in patients with clinically suspected pulmonary embolism (PE) who have either a combination of clinical decision rule (CDR) indicating PE unlikely and normal D-dimer test or CDR indicating PE likely or abnormal D-dimer test and normal helical computed tomography (CT).
Ethics approval(s)The institutional review boards of all participating hospitals approved the study protocol.
Health condition(s) or problem(s) studiedPulmonary embolism (PE)
InterventionDiagnosis of PE by CDR, D-dimer and helical CT.
Intervention typeOther
Primary outcome measureThromboembolic disease during three months follow-up in all patients.
Secondary outcome measuresNo secondary outcome measures
Overall study start date01/11/2002
Completion date01/12/2004

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexBoth
Target number of participants3306
Key inclusion criteriaAdult patients more than 18 years old with clinically suspected pulmonary embolism.
Key exclusion criteria1. Pregnancy
2. Allergy to contrast media
3. No geographic possibility of return for follow-up
4. Treatment with therapeutic heparin for more than 24 hours
5. Indication for thrombolytic therapy
Date of first enrolment01/11/2002
Date of final enrolment01/12/2004

Locations

Countries of recruitment

  • Netherlands

Study participating centre

Leiden University Medical Centre (LUMC)
Leiden
2300 RC
Netherlands

Sponsor information

Academic Medical Centre (AMC) (The Netherlands)
Hospital/treatment centre

P.O. Box 22660
Amsterdam
1100 DD
Netherlands

Website http://www.amc.uva.nl
ROR logo "ROR" https://ror.org/03t4gr691

Funders

Funder type

Hospital/treatment centre

Amphia Hospital Breda (The Netherlands)

No information available

Hospital Hilversum (The Netherlands)

No information available

University Hospital Maastricht (AZM) (The Netherlands)

No information available

Academic Medical Centre (AMC) (The Netherlands)

No information available

Erasmus Medical Centre (The Netherlands)

No information available

University Medical Centre St Radboud (The Netherlands)

No information available

Meander Medical Centre (The Netherlands)

No information available

Spaarne Hospital (The Netherlands)

No information available

Diakonessenhuis Meppel (The Netherlands)

No information available

Medical Centre Rijnmond, location Zuider Hospital Rijnstate Hospital (The Netherlands)

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article Results 11/01/2006 Yes No