Plain English Summary
Background and study aims
Acute aortic dissection is a disease with a risk of rupture of the ascending aorta (the part of the aorta after the heart) that can be treated with prosthetic replacement of the ascending aorta. After the repair and during follow up of those patients, the residual part of the aorta (the aortic arch) can heal with time. In other cases, the remaining persistent dissected part of the aorta can grow in diameter leading to an aneurysm (bulge). In this case, there is a risk of rupture of the aneurysm causing the death of the patient. The only way to prevent this rupture is a preventive surgery of the dilated part of the aorta. The conventional treatment for those aneurysms is a surgical replacement of the aortic arch. This surgery has high mortality and morbidity rates. This surgery is performed under general anaesthesia and requires extracorporeal circulation (circulation of blood outside the body through a machine) with hypothermic circulatory arrest (temporarily stopping blood flow under very cold body temperatures). Only healthy patients can undergo this surgery. Recently, a group of surgeons have used an endovascular approach for degenerative aneurysm of the aortic arch (non dissecting aneurysms). The device used is a long covered stent (tube) with two branches to keep supra aortic vessels (for the brain and the arms) patent (open). This device is custom made for each patient's anatomy. This technique had acceptable mortality and morbidity rates. The encouraging results of the early experience with this device have led to the use of this technique in chronic dissection of the aortic arch. The aim of this study is to assess the results of this endovascular treatment of dissecting aneurysm of the aortic arch in patients previously treated for an acute aortic dissection.
Who can participate?
Patients aged 18 or older previously treated for an acute aortic dissection with a custom-made branched endograft
What does the study involve?
Data about patients treated with this device around the world are collected and analysed. Rates of in-hospital mortality and stroke, technical success, early and late complications, re-intervention, and mortality during follow-up are evaluated.
What are the possible benefits and risks of participating?
There are no benefits and risks for participating patients in this study. Patients would have the same surgical repair with or without recruitment into this study. The benefits of this endovascular repair are low mortality and stroke rates in the short term. The risk of this endovascular approach is a high late re-intervention rate.
Where is the study run from?
1. Centre Chirurgical Marie Lannelongue
2. University Hospital Eppendorf
3. CHU de Lille
4. Skane University Hospital
5. Uppsala University Hospital
6. Cleveland Clinic
7. Serviço Integrado de Técnicas Endovasculares
8. Maastricht University Medical Center
9. St Thomas' Hospital
10. University Medical Center Regensburg
11. Queen Elizabeth University Hospital NHS Foundation Trust
12. Queen Mary Hospital
13. CHU de Nantes
14. Medical University of Warsaw
When is the study starting and how long is it expected to run for?
December 2017 to September 2018
Who is funding the study?
Investigator initiated and funded
Who is the main contact?
Dorian Verscheure
dorians@gmail.com
Trial website
Contact information
Type
Scientific
Primary contact
Mr Dorian Verscheure
ORCID ID
Contact details
30 rue damesme
Paris
75013
France
+33 (0)63291212
dorians@gmail.com
Additional identifiers
EudraCT number
ClinicalTrials.gov number
Protocol/serial number
063290
Study information
Scientific title
Endovascular treatment of aortic arch chronic dissection with a branched endograft following previous ascending aorta replacement for Acute Type A dissection: midterm results from an international multicenter study
Acronym
Study hypothesis
Endovascular treatment of aortic arch chronic dissection with a branched endograft following previous ascending aorta replacement for Acute Type A dissection is a safe and efficient method.
Ethics approval
Comité d'Ethique de Recherche Clinique de la Société Française de Chirurgie Thoracique et Cardio-Vasculaire (Ethical committee in clinical research of the French society of thoracic and cardiovascular surgery), 22/04/2018, ref: CERC-SFCTCV-2018-3-7-20-50-27-vedo
Study design
Retrospective multicentre international observational study
Primary study design
Observational
Secondary study design
Case series
Trial setting
Hospitals
Trial type
Treatment
Patient information sheet
Not available in web format, please use the contact details to request a patient information sheet
Condition
Aortic arch chronic dissection following ascending aorta prosthetic replacement for acute Stanford A dissection
Intervention
Endovascular repair of aortic arch chronic dissection with a custom made branched endograft (Cook Medical, Bloomington, In, USA).
Endografts includes 2 branched (one for the brachiocephalic trunk and one for the left common carotid artery (LCC), requiring left subclavian artery (LSA) transposition or bypass) or 3 branched (one for each supra aortic trunk) devices.
In order to deliver the components, three arterial access sites are required:
1. Femoral access to insert the endograft over a stiff wire positioned through the aortic valve into the left ventricle.
2. Right common carotid or right axillary access to catheterize the innominate internal side branch and to insert the covered stent bridging the branch to the IT.
3. Left axillary or brachial access to catheterize the LCC through the LSA transposition or bypass, and the LCC internal side branch to deliver the covered stent bridging the side branch to the LCC.
After systemic heparinization with 100 IU/kg (target activated clotting time [ACT] > 300 seconds), catheters and/or sheaths are placed to mark the origins of the innominate artery and LCC or LSA, a catheter is positioned close to the apex of the left ventricle from the femoral access and a stiff wire (Lunderquist, Cook Medical) is advanced through this catheter. The position of the tip of the stiff wire is constantly visualized. Under fluoroscopy, the graft is verified outside the patient to get accustomed to the numerous radio-opaque markers and then delivered over the stiff wire to the aortic arch. The tapered short tip is brought through the aortic valve, into the left ventricle. An angiogram is performed. If the branches along with their associated markers are positioned adequately, the graft is deployed under cardiac output reduction using rapid pacing, inferior vena cava occlusion or pharmacologic cardiac arrest. Normal cardiac output is resumed prior to withdrawing the tapered tip of the delivery system and the stiff wire from the left ventricle. The side branches are catheterized from the target vessels and sheaths are positioned into the inner side branches. Appropriate bridging limbs and covered stents are advanced through the access sheaths into the target vessels and deployed. On table angiography completes the procedure to confirm complete exclusion of the aneurysm and patency of the branches.
The trialists will measure: in hospital stroke and mortality rates, technical success of the surgical procedure, in hospital complications (cardiac, renal and respiratory failure, reinterventions), late complications (stroke, reintervention, aortic related complications) and mortality rate. There is no maximal follow up, the trialists use the most recent data for each patient.
Intervention type
Procedure/Surgery
Phase
Drug names
Primary outcome measure
Rates of in-hospital mortality and stroke, measured during the postoperative course (between surgical procedure and postoperative day 30)
Secondary outcome measures
1. Technical success, defined as successful delivery of the endograft without type 1 endoleak and evaluated on the preoperative angiogram, without death during the first 24 postoperative hours. Measured during the beginning of the surgical procedure and postoperative hour 24
2. Early complications, measured using evaluation of the presence of cardiac (troponin elevation with electrocardiogram modification), renal (elevation of creatinin level requiring extracorporeal epuration) or respiratory (hypoxemia, pneumoniae or reintubation) failure or necessity of secondary surgical procedure. Measured before postoperative day 30
3. Late complications, measured using the same measurement as early complications
4. Re-intervention and mortality rates measured during follow up (between postoperative day 30 and the most recent news)
Overall trial start date
02/12/2017
Overall trial end date
25/09/2018
Reason abandoned (if study stopped)
Eligibility
Participant inclusion criteria
1. Patients aged 18 or older
2. With prior ascending aorta prosthetic replacement for Stanford A acute dissection
3. With chronic dissection of the aortic arch with arch dilatation
4. Treated with a custom-made branched endograft (Cook Medical, Bloomington, In, USA)
Participant type
Patient
Age group
Adult
Gender
Both
Target number of participants
70
Participant exclusion criteria
Does not meet inclusion criteria
Recruitment start date
02/12/2017
Recruitment end date
01/04/2018
Locations
Countries of recruitment
Brazil, France, Germany, Hong Kong, Netherlands, Poland, Sweden, United Kingdom, United States of America
Trial participating centre
Centre Chirurgical Marie Lannelongue
133 avenue de la résistance
Le Plessis-Robinson
92350
France
Trial participating centre
University Hospital Eppendorf
20246
Trial participating centre
CHU de Lille
59000
Trial participating centre
Skane University Hospital
214 28
Trial participating centre
Uppsala University Hospital
751 85
Trial participating centre
Cleveland Clinic
44195
Trial participating centre
Serviço Integrado de Técnicas Endovasculares
22031-070
Trial participating centre
Maastricht University Medical Center
6202 AZ
Trial participating centre
St Thomas' Hospital
London
SE1 7EH
Trial participating centre
University Medical Center Regensburg
93053
Trial participating centre
Queen Elizabeth University Hospital NHS Foundation Trust
B15 2TH
Trial participating centre
Queen Mary Hospital
Pok Fu Lam
-
Hong Kong
Trial participating centre
CHU de Nantes
44093
Trial participating centre
Medical University of Warsaw
02-091
Funders
Funder type
Other
Funder name
Investigator initiated and funded
Alternative name(s)
Funding Body Type
Funding Body Subtype
Location
Results and Publications
Publication and dissemination plan
The trialists plan to publish their results in Circulation around August 2018
IPD sharing statement
Datas can be available later and will be held in a secure computer in the trialists' institution
Intention to publish date
01/08/2018
Participant level data
Available on request
Basic results (scientific)
Publication list