INSTEAD Trial: INvestigation of STEnt Grafts in Patients With Type B Aortic Dissection (INSTEAD)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00525356
Recruitment Status : Completed
First Posted : September 5, 2007
Last Update Posted : October 29, 2015
Information provided by:
Medtronic Cardiovascular

Brief Summary:
The objective of this study is to compare treatment with an endograft prothesis versus antihypertensive treatment in patients with a dissection of the thoracic aorta.

Condition or disease Intervention/treatment Phase
Aortic Diseases Device: Medtronic Talent Stent-Graft-System Phase 3

Detailed Description:

Patients older than 18 years with type B aortic dissection as diagnosed by computed tomography or magnetic resonance angiography are randomized to either a thoracic aortic endoprosthesis and antihypertensive treatment, called "stent grafting," or a tailored antihypertensive treatment, called "medical treatment."

Only patients in a clinically stable condition and without spontaneous thrombosis of the false lumen after 14 days of the index dissection are considered eligible for study inclusion.

Primary outcome measure is all-cause mortality. Secondary outcome variables include conversion to stent and/or surgery, induced thrombosis of the false lumen, cardiovascular morbidity, aortic expansion (>5 mm/y of maximum diameter including true and false lumina), quality of life, and length of intensive care unit and hospital stay. The study design calls for 136 patients to be randomized and monitored for 24 months.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 136 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: INvestigation of STEnt Grafts in Patients With Type B Aortic Dissection
Study Start Date : February 2002
Actual Study Completion Date : September 2007

Arm Intervention/treatment
Active Comparator: 1
Anti-hypertensive medical treatment
Device: Medtronic Talent Stent-Graft-System
Other Name: Endograft

Primary Outcome Measures :
  1. all-cause mortality [ Time Frame: 1 year ]

Secondary Outcome Measures :
  1. thrombosis of the false lumen, cardiovascular morbidity, degree of aortic expansion, length of intensive care and hospital stay, and quantitative assessment of single or combination antihypertensive drug therapy. [ Time Frame: 5 years ]

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • No contraindication for an anesthetic procedure with intubation
  • Type B aortic dissection that occurred 2-52 weeks before randomization
  • Diameter of the targeted aortic segment ≤6 cm
  • Aortic kinking <75°
  • The subject or legal guardian understands the nature of the study and agrees to its provisions on a written informed consent form
  • Availability for the appropriate follow-up visits during the follow-up period
  • Capability to follow all study requirements

Exclusion Criteria:

  • Pregnant woman
  • Thrombocytopenia or ongoing anticoagulation therapy
  • Renal failure and/or creatinine >2.4 mg%
  • Complete thrombosis of the false lumen
  • Ongoing infection
  • Cancer is likely to cause death within 1 year
  • Enrolment in another clinical study
  • Unwillingness to cooperate with study procedures or follow-up visits

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00525356

Medtronic Bakken Research Center
Maastricht, Netherlands, 6229 GW
Sponsors and Collaborators
Medtronic Bakken Research Center
Principal Investigator: C A Nienaber, MD, FESC, FACC Division of Cardiology and Internal Medicine Department, Rostock University, Germany.