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Antibiotic Concentration in Internal Mammary Graft Preparation
Target Tissue Concentration of Standard Antibiotic Treatment in Coronary Artery Bypass Grafting Using Left Internal Mammary Artery
The negative effect of internal mammary harvesting on sternal perfusion is well known, especially in diabetic subjects. Microdialysis previously showed increased lactate tissue concentration after mammary artery preparation. Although high antibiotic concentration is of utmost importance in this region, no study previously measured the effect of internal mammary artery harvesting on target tissue antibiotic concentration.
Study hypothesis:
Internal mammary artery harvesting imposes an additional risk for deep sternal wound infection by impairing antibiotic tissue penetration. This effect is mediated by altered perfusion patterns and may be seen in cephalosporin and/or Teicoplanin treatment.
Study objective:
To evaluate the impact of left internal mammary artery preparation on target tissue antibiotic concentration of Cefazolin and Teicoplanin during cardiac surgery
Design:
This study is designed as an observational pharmacokinetic trial. Patients are their own controls by measuring antibiotic concentration in different subcutaneous tissues.
Study population:
Patients referred for coronary artery bypass grafting to the Department of Cardiothoracic Surgery with planned unilateral left internal mammary artery preparation and a high risk profile for deep sternal wound infections will be asked to participate in this trial.
Studie Overzicht
Toestand
Studietype
Inschrijving (Verwacht)
Contacten en locaties
Studie Locaties
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Vienna, Oostenrijk, 1090
- Werving
- Medical University of Vienna
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Contact:
- Martin Andreas, MD, MBA
- Telefoonnummer: 00431404005262
- E-mail: martin.andreas@meduniwien.ac.at
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion Criteria:
- Written informed consent
- Planned coronary artery bypass grafting with unilateral internal mammary artery bypass
- Planned used of cardiopulmonary bypass
Exclusion Criteria:
- Inability to give informed consent
- Know allergy to cephalosporins, penicillin or Teicoplanin
- Re-operation
- Additional planned valve surgery
- Dialysis
- BMI > 30
- Long standing diabetes mellitus (> 7 years)
- Ejection fraction below 20% measured with transthoracic echocardiography
- Chronic severe renal insufficiency
- Childbearing potential
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Observatiemodellen: Cohort
- Tijdsperspectieven: Prospectief
Cohorten en interventies
Groep / Cohort |
|---|
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CABG - subjects
only one group
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
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- Difference of tissue concentration of Teicoplanin between left and right pre-sternal subcutaneous tissue and between the subcutaneous tissue at the tight
Tijdsspanne: 10 hours
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measurement with microdialysis
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10 hours
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- Difference of tissue concentration of Cefazolin between left and right pre-sternal subcutaneous tissue and between the subcutaneous tissue at the tight
Tijdsspanne: 10 hours
|
measurement with microdialysis
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10 hours
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Medewerkers en onderzoekers
Sponsor
Studie record data
Bestudeer belangrijke data
Studie start
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- Version 1.1 - 19.11.2009
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