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- Klinische proef NCT02308566
Cerebral Embolic Load in Patients Undergoing Surgical Aortic Valve Replacement: A Comparison of the Conventional With the Minimized Extracorporeal Circulation Technique Using Transcranial Doppler Ultrasound (AKE-MECC)
Aortic Valve Replacement Using Closed Extracorporeal Circuit. Minimized Versus Conventional Extracorporeal Circulation Technique: Qualitative Differences
Studie Overzicht
Toestand
Gedetailleerde beschrijving
Background
The gold standard to treat severe aortic valve stenosis is currently the surgical aortic valve replacement (SAVR) using conventional extracorporeal circulation (CECC). SAVR, however, can be performed also on minimized extracorporeal circulation (MECC), which is characterized by reduced priming volume and interfaces between blood and artificial surfaces and blood-air interface, respectively. Further technical developments of the MECC system together with reports on less induction of the coagulation cascade and activation of inflammatory systemic response may account for a reduced incidence of microbubble generation with MECC system.
Objective
The aim of the is to investigate the procedural-related incidence of high-intensity transient signals (HITS) representing solid or gaseous microembolism reaching the cerebral vessels.
Methods
Patients undergoing SAVR are included in the study and randomised to either MECC or CECC technique. HITS are continuously bilaterally detected during the entire intraoperative period by transcranial Doppler ultrasound.
Studietype
Inschrijving (Werkelijk)
Fase
- Fase 4
Contacten en locaties
Studie Locaties
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Bern, Zwitserland, 3010
- University Hospital Bern
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Isolated Severe Aortic Valve Stenosis
- No other cardiac disease
- No other coronary heart disease
- Written informed consent
Exclusion Criteria
- Double valve surgery
- Concomitant coronary artery bypass surgery
- Vascular surgery
- Age < 18 yrs.
- Age > 80 yrs.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
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Actieve vergelijker: Conventional Extracorporeal Circulation Technique
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This group of patients receives surgical aortic valve replacement using CECC.
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Experimenteel: Minimized Extracorporeal Circulation Technique
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This group of patients receives surgical aortic valve replacement using MECC.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
|---|---|
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Total and interval-related cerebral microembolic load as measured by transcranial Doppler
Tijdsspanne: Intraoperative period (start surgical procedure to skin suture, duration approx. 4 hrs)
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Intraoperative period (start surgical procedure to skin suture, duration approx. 4 hrs)
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Secundaire uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
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Cerebral complications, e.g. delirium and stroke as detected clinically
Tijdsspanne: In-hospital period (until hospital discharge, duration approx. 7-10 days)
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In-hospital period (until hospital discharge, duration approx. 7-10 days)
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Redo surgery
Tijdsspanne: In-hospital period (until hospital discharge, duration approx. 7-10 days)
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In-hospital period (until hospital discharge, duration approx. 7-10 days)
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ICU length of stay
Tijdsspanne: In-hospital period (until hospital discharge, duration approx. 7-10 days)
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In-hospital period (until hospital discharge, duration approx. 7-10 days)
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Extubation time
Tijdsspanne: In-hospital period (until hospital discharge, duration approx. 7-10 days)
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In-hospital period (until hospital discharge, duration approx. 7-10 days)
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Thromboembolic complications
Tijdsspanne: In-hospital period (until hospital discharge, duration approx. 7-10 days)
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In-hospital period (until hospital discharge, duration approx. 7-10 days)
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In-hospital infections
Tijdsspanne: In-hospital period (until hospital discharge, duration approx. 7-10 days)
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In-hospital period (until hospital discharge, duration approx. 7-10 days)
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In-hospital Mortality
Tijdsspanne: In-hospital period (until hospital discharge, duration approx. 7-10 days)
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In-hospital period (until hospital discharge, duration approx. 7-10 days)
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Medewerkers en onderzoekers
Onderzoekers
- Hoofdonderzoeker: Thierry Carrel, MD, PhD, Department of Cardiovascular Surgery
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
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
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- 034/11
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