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CompletedNCT01824147Updated Feb 24, 2016

ASS-Nonresponse Following Cardiac Surgery as Assessed With Multiple Electrode Aggregometry

An observational study in ASS-Nonresponse, sponsored by Goethe University. Completed at 2 sites in Germany. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2016-02-24.

Sponsored by Goethe University · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
400
Ages
18 Years and older
Sex
All
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Study summary

It is the aim of the present study to assess the prevalence of ASS-Nonresponse following cardiac surgery using the Multiple Electrode Aggregometry (MEA).

Read the detailed description

Up to now there are no data concerning the prevalence of ASS-Nonresponse following surgical coronary revascularization procedures as assessed with the Multiple Electrode Aggregometry. Results of the present observational study are needed to assess the prevalence of ASS-Nonresponse in order to perform a sample size analysis for a prospective interventional study in a second step.

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Conditions studied

  • ASS-Nonresponse

Keywords

  • ASS-Nonresponse
  • cardiac
  • surgery
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In context

Lead sponsor

Goethe University is the lead sponsor of 97 studies on the registry; 14 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Patients following cardiac surgery and a antiaggregatory therapy with aspirin

Inclusion criteria

  • Patients older than 18 years after cardiac surgery
  • Antiaggregatory therapy with aspirin postoperatively

Exclusion criteria

Exclusion Criteria:

  • known allergy to aspirin
  • need for an antiaggregatory therapy other than aspirin
  • pregnancy
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
400 participants (actual)
Patient registry
No

Groups and cohorts

  • CABG Patients

    Patients undergoing surgery for coronary revascularization.

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What researchers measure

Primary outcomes

  1. ASPItest

    Area under the aggregation curve following stimulation with arachidonic acid in the Multiple Electrode Aggregometry (MEA)

    Time frame: at day 3 and 5 after the first dose of aspirin following surgery

Secondary outcomes

  1. TRAPtest

    Area under the aggregation curve in the Multiple Electrode Aggregometry following stimulation with thrombin receptor activating peptide 6

    Time frame: at day 3 and 5 after the first dose of aspirin following surgery

  2. Platelet Count

    Platelet count taken from the daily standard laboratory results.

    Time frame: at day 3 and 5 after the first dose of aspirin following surgery

  3. Mortality

    Mortality will be assessed by a telephonic follow up interview 12 month after enrollment into the study

    Time frame: 12 month

  4. Myocardial infarction

    Occurrence of a myocardial infarction during the 12 month following surgery assessed in a telephonic follow up interview.

    Time frame: 12 month

  5. Readmission to hospital

    Did a readmission to hospital due to cardiac or pulmonary reasons take place in the 12 month following enrollment into the study? Assessed by a telephonic follow up interview.

    Time frame: 12 month

Other outcomes

  1. Age

    Age of the patient in years at the time of enrollment

    Time frame: at the day of enrollment

  2. Height

    Height of the patient in centimeters at the time of enrollment

    Time frame: at the day of enrollment

  3. Weight

    Weight of the patient in kilograms at enrollment

    Time frame: at the day of enrollment

  4. Gender

    Gender of the patient

    Time frame: at the day of enrollment

  5. LDL cholesterol

    LDL cholesterol of the patient in mg/dl at enrollment

    Time frame: at the day of enrollment

  6. nicotine

    Smoking habits of the patient will be documented at enrollment in the categories: * active smoker * non smoker

    Time frame: at the day of enrollment

  7. European system for cardiac operative risk evaluation (EuroSCORE)

    EuroSCORE as assessed on admission will be documented.

    Time frame: at the day of enrollment

  8. Diabetes

    Risk factor diabetes will be documented in the following categories at enrollment: * Diabetes Typ I * Diabetes Typ II without the need for insulin substitution * Diabetes Typ II with the need for insulin substitution

    Time frame: at the day of enrollment

  9. Surgical procedure

    The surgical procedure performed will be documented.

    Time frame: at the day of enrollment

  10. phone number

    The phone will be documented for the 12 month follow up interview.

    Time frame: at the day of enrollment

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Study locations

2 sites
  • Goethe - University
    Frankfurt, Hessen 60590, Germany
  • University Hospital Goettingen
    Goettingen, Lower Saxony 37073, Germany
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References and documents

Publications

  • Collet JP, Cuisset T, Range G, Cayla G, Elhadad S, Pouillot C, Henry P, Motreff P, Carrie D, Boueri Z, Belle L, Van Belle E, Rousseau H, Aubry P, Monsegu J, Sabouret P, O'Connor SA, Abtan J, Kerneis M, Saint-Etienne C, Barthelemy O, Beygui F, Silvain J, Vicaut E, Montalescot G; ARCTIC Investigators. Bedside monitoring to adjust antiplatelet therapy for coronary stenting. N Engl J Med. 2012 Nov 29;367(22):2100-9. doi: 10.1056/NEJMoa1209979. Epub 2012 Nov 4. PubMed 23121439 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 24, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01824147
Lead sponsor
Goethe University
Collaborators
University Hospital Goettingen
Responsible party
Christian F. Weber, MD (Dr.med. Dr.med. habil Christian F. Weber, Goethe University) — Principal investigator
First posted
Apr 4, 2013
Start date
Aug 2013
Primary completion
Mar 2015
Completion
Aug 2015
Last update
Feb 24, 2016

Study contacts

Christian F Weber, MD
principal investigator · Goethe University Frankfurt

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2016. You cannot join it, but the record below documents what was studied.

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