Aortic Isthmus Stenosis
Conditions
Brief summary
This controlled clinical study investigates arterial blood pressure and vascular remodling before and 4 weeks after catheter interventional treatment of re-stenosis of the aortic isthmus (Recoarctatio Aortae).
Detailed description
Patients with treated aortic isthmus stenosis during their first year of life often develop a Recoarctatio Aortae (re-stenosis of the aortic isthmus) in the long term followed by arterial hypertension. The Recoarctatio Aortae can be treated during a cather intervention by balloon dilatation or stent implantation. Patients with arterial hypertension often develop vascular remodeling with increased central systolic blood pressure and increased pulse pressure. Vascular remodling predics cardiovascular events and increases mortality. Vascular remodeling can be assessed non-invasively by using scanning laser doppler flowmetry (SLDF)), pulse wave analysis and measurement of flow-dependent vasodilation. In this controlled clinical study we investigate arterial blood pressure and vascular remodling before and 4 weeks after catheter interventional treatment of Recoarctatio Aortae.
Interventions
None listed
Sponsors
University of Erlangen-Nürnberg Medical School
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
12 Years to 99 Years
Inclusion criteria
* male and female persons with Recoarctatio Aortae and planned interventional therapy (balloon dilatation or stent implantation) * adequate contraceptive methods in females with childbearing potential
Exclusion criteria
* other secondary causes for hypertension * treatment resistent arterial hypertension or uncontrolled hypertension (office BP ≥ 180/110 mmHg) * history of hypertensive enzephalopathy or intracerebral bleeding * diabetes mellitus * cataract * known renal, respiratory, hepatic, gastrointestinal, endocrine, metabolic, immunolic, hematologic, oncologic, neurologic or psychiatric diseases besides the diagnosis of artoic isthmus stenosis * one of the following diseases or conditions during the last 6 months: myocardial infaction, instable angina pectoris, cardiac insufficiency * pregnant or lactating woman or inadequate contraception (pearl-index ≥ 1%) * participation in another clinical study * drug or medication abuse * inadequate adherence or other condition preventing the patient from study participation (in the eyes of the treating physician)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| change in central systolic blood pressure (BP) (mmHg) measured using pulse wave analysis | 4 weeks | change in central systolic blood pressure (BP) (mmHg) between baseline and 4 weeks post intervention |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| change in central pulse pressure measured (mmHg) using pulse wave analysis | 4 weeks | change in central pulse pressure (mmHg) between baseline and 4 weeks post intervention |
| change in augmentation index (-) measured using pulse wave analysis | 4 weeks | change in augmentation index (-) between baseline and 4 weeks post intervention |
| change in pulse wave velocity (m/s) | 4 weeks | change in pulse wave velocity (m/s) between baseline and 4 weeks post intervention |
| change in systolic and diastolic office BP (mmHg) | 4 weeks | change in systolic and diastolic office BP (mmHg) between baseline and 4 weeks post intervention |
| change in central diastolic blood pressure (BP) (mmHg) measured using pulse wave analysis | 4 weeks | change in central diastolic blood pressure (BP) (mmHg) between baseline and 4 weeks post intervention |
| change in retinal arteriolar wall to lumen ratio (-) measured using Scanning Laser Doppler Flowmetry | 4 weeks | change in retinal arteriolar wall to lumen ratio between baseline and 4 weeks post intervention |
| change in retinal capillary flow (AU) measured using Scanning Laser Doppler Flowmetry | 4 weeks | change in retinal capillary flow (AU) between baseline and 4 weeks post intervention |
| change in retinal capillary density measured using Scanning Laser Doppler Flowmetry | 4 weeks | change in retinal capillary density between baseline and 4 weeks post intervention |
| change in flow dependent vasodilation measured using the Unex Device | 4 weeks | change in flow dependent vasodilation between baseline and 4 weeks post intervention |
| change in systolic and diastolic 24 hour ambulatory BP (mmHg) | 4 weeks | change in systolic and diastolic 24 hour ambulatory BP (mmHg) between baseline and 4 weeks post intervention |
Countries
Germany
Outcome results
None listed