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Non-randomized study of 5 subjects that have been selected for prophylactic open surgery due to abdominal aortic aneurysm. During surgery the renal arteries are identified and subjected to about 60 seconds each of freezing by application of liquid nitrogen in dedicated catheters around the circumference of each artery. Another 5 patients that are not subjected to the freeze therapy serve as controls. Main outcome is change in ambulatory blood pressure levels.
Non-randomized study of 5 subjects that have been selected for prophylactic open surgery due to abdominal aortic aneurysm. During the surgery the renal arteries at both sides are identified and subjected to about 60 seconds each of freezing by application of liquid nitrogen in dedicated catheters around the circumference of each artery. Renal arterial blood flow is checked by Doppler after the freezing procedure, during the surgery. Another 5 patients that are not subjected to the freeze therapy serve as controls. Main outcome is change in 24h ambulatory blood pressure levels and of course safety parameters such as creatinine levels.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Cryo-therapy | Experimental | Cryo-therapy of renal arteries |
|
| Control | No Intervention | No intervention in renal arteries |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Cryo-therapy | Procedure | Cryo-therapy for about 60 seconds applied circumpherentially to each renal artery |
|
| Measure | Description | Time Frame |
|---|---|---|
| Blood pressure levels | 24 hour mean ambulatory blood pressure levels before and 2 months after surgery | 2 months |
| Measure | Description | Time Frame |
|---|---|---|
| Levels of epinephrine and nor-epinephrine in urine | Collection of urine for analyses of stress hormones | before and 2 months after surgery |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital of Linkoping | Linköping | 58185 | Sweden |
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| ID | Term |
|---|---|
| D006973 | Hypertension |
| ID | Term |
|---|---|
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
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