Cerebral Embolic Load in Patients Undergoing Surgical Aortic Valve

Status Completed

Clinical Trial Summary

In this study, the investigators aim to compare cerebral embolic load in patients undergoing surgical aortic valve replacement using either the minimized extracorporeal circulation or the conventional extracorporeal circulation technique. The detection of cerebral emboli is performed not-invasively by transcranial Doppler detection of high-intensity transient signals representing solid or gaseous microembolism in the middle cerebral arteries. The investigators hope to get more insight in the mechanism (incl. quantity) of cerebral embolism during aortic valve surgery using extracorporeal circulation.

Clinical Trial Description

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. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT02308566
Study type	Interventional
Source	University Hospital Inselspital, Berne
Contact
Status	Completed
Phase	Phase 4
Start date	June 2011
Completion date	June 2016

View Details

See also
Status	Clinical Trial	Phase
Completed	`NCT03186339` - Validation of the "TASQ" in Patients Undergoing SAVR or TF-TAVI
Recruiting	`NCT03549559` - Imaging Histone Deacetylase in the Heart	N/A
Terminated	`NCT02854319` - REpositionable Percutaneous Replacement of NatIve StEnotic Aortic Valve Through Implantation of LOTUS EDGE Valve System	N/A
Recruiting	`NCT05601453` - The ReTAVI Prospective Observational Registry
Withdrawn	`NCT05481814` - CPX in Paradoxical Low Flow Aortic Stenosis
Completed	`NCT02241109` - Predicting Aortic Stenosis Progression by Measuring Serum Calcification Propensity	N/A
Completed	`NCT01700439` - Surgical Treatment of Aortic Stenosis With a Next Generation, Rapid Deployment Surgical Aortic Valve	N/A
Recruiting	`NCT04429035` - SLOW-Slower Progress of caLcificatiOn With Vitamin K2	N/A
Completed	`NCT04103931` - Impact of a Patient Decision Aid for Treatment of Aortic Stenosis	N/A
Completed	`NCT03950440` - Assessing the Incidence of Postoperative Delirium Following Aortic Valve Replacement
Active, not recruiting	`NCT02661451` - Transcatheter Aortic Valve Replacement to UNload the Left Ventricle in Patients With ADvanced Heart Failure (TAVR UNLOAD)	N/A
Completed	`NCT02758964` - Evaluation of Cerebral Thrombembolism After TAVR
Completed	`NCT02792452` - Clinical Value of Stress Echocardiography in Moderate Aortic Stenosis
Completed	`NCT02847546` - Evaluation of the BARD® True™ Flow Valvuloplasty Perfusion Catheter for Aortic Valve Dilatation	N/A
Not yet recruiting	`NCT02536703` - Safety and Efficacy of Lotus Valve For TAVI In Patients With Severe Aortic Stenosis In Chinese Population	Phase 3
Not yet recruiting	`NCT02541877` - Sizing-sTrategy of Bicuspid AoRtic Valve Stenosis With Transcatheter Self-expandable Valve	Phase 3
Completed	`NCT02249000` - BIOVALVE - I / II Clincial Investigation	N/A
Not yet recruiting	`NCT02221921` - Safety and Efficacy Study of MicroPort's Transcatheter Aortic Valve and Delivery System for TAVI	N/A
Active, not recruiting	`NCT02080299` - Protection by Remote Ischemic Preconditioning During Transcatheter Aortic Valve Implantation	Phase 2
Terminated	`NCT01939678` - Characterization and Role of Mutations in Sodium-phosphate Cotransporters in Patients With Calcific Aortic Valve Disease

Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

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

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms