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Peripheral regional anesthesia induces a sympathectomy-like effect with neurovascular changes causing increased arterial blood flow and venodilatation .
Near-infrared spectroscopy (NIRS) can be applied to different kinds of tissue providing oxygen saturation by detecting the absorption and reflection of near-infrared light .
The effect on peripheral tissue oxygenation in patients undergoing arteriovenous fistula revision has not yet been examined. We postulate an increase in tissue oxygenation by sympathicolysis caused by peripheral regional anesthesia that might be the reason for beneficial outcome. The aim of our study was to demonstrate the effect of a supraclavicular plexus block in this group of patients.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Supraclavicular Nerve Block | Patients undergoing vascular surgery for creation or revision of an arterio-venous fistula. Intervention: supraclavicular plexus block for anaesthesia. NIRS measurement before and after brachial plexus block. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Supraclavicular nerve block | Drug | Supraclavicular nerve block using ultrasound and 10ml ropivacaine 0.5% with 20ml mepivacaine 1% |
|
| Measure | Description | Time Frame |
|---|---|---|
| NIRS after block | Absolute change from baseline value in tissue oxygenation | 5 minutes before block until 30 minutes after block |
| Measure | Description | Time Frame |
|---|---|---|
| Difference between both arms | Absolute difference in tissue oxygenation between blocked arm and contralateral arm | 5 minutes before block until 30 minutes after block |
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Inclusion Criteria:
Exclusion Criteria:
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All patients undergoing shunt surgery under supraclavicular plexus block
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Marienhospital Stuttgart, Dpt. of Anaesthesiology | Stuttgart | Baden-Wurttemberg | 70199 | Germany |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 30124502 | Derived | Keuler J, Weiss C, Klemm K, Pochhammer J, Schmidt R, Ilies C. Assessing changes in tissue oxygenation by near-infrared spectroscopy following brachial plexus block for arteriovenous fistula surgery: A prospective observational pilot study. Eur J Anaesthesiol. 2018 Oct;35(10):759-765. doi: 10.1097/EJA.0000000000000871. |
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| ID | Term |
|---|---|
| D001164 | Arteriovenous Fistula |
| ID | Term |
|---|---|
| D001165 | Arteriovenous Malformations |
| D054079 | Vascular Malformations |
| D018376 | Cardiovascular Abnormalities |
| D002318 | Cardiovascular Diseases |
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| D016157 | Vascular Fistula |
| D014652 | Vascular Diseases |
| D000013 | Congenital Abnormalities |
| D009358 | Congenital, Hereditary, and Neonatal Diseases and Abnormalities |
| D005402 | Fistula |
| D020763 | Pathological Conditions, Anatomical |
| D013568 | Pathological Conditions, Signs and Symptoms |