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Ischemic preconditioning is defined as protection from cell damage induced by prolonged ischemia by preceding cycles of short ischemia. Hence, ischemic preconditioning could reduce ischemic lesion during clamping a femoral artery for vascular surgery. In this prospective, randomized pilot study is investigated if clamping of the femoral artery leads to ischemia of the calf measurable by near-infrared spectroscopy. In addition to this, the effect of sevoflurane preconditioning on ischemia of the calf is measured.
Ischemic preconditioning is performed by clamping of the femoral artery for five minutes in 40 patients. In 20 patients sevoflurane preconditioning is performed five minutes before ischemic preconditioning by inducing sevoflurane anesthesia for five minutes. Muscle tissue oxygenation is measured bilaterally in the anterior tibial muscle by near-infrared spectroscopy (INVOS, SOMANETICS, Troy, Michigan/ USA) during preconditioning and following ischemia.Clinically relevant ischemia was defined as a decrease of tissue oxygen saturation to 95 % of baseline.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Sevoflurane | Experimental | Sevoflurane Preconditioning |
|
| No Sevoflurane | No Intervention | No Sevoflurane Preconditioning |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Sevoflurane preconditioning | Procedure | Preconditioning by transient application of sevoflurane |
|
| Measure | Description | Time Frame |
|---|---|---|
| Decrease of tissue oxygen saturation below 95 % of baseline | Decrease of tissue oxygen saturation below 95 % of baseline | 4 hours |
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Inclusion Criteria:vascular surgery with clamping of a femoral artery. -
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Axel Fudickar, Dr. | University Hospital Schleswig-Holstein | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital Schleswig-Holstein, Campus Kiel | Kiel | Schleswig-Holstein | 24105 | Germany |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 25132803 | Derived | Fudickar A, Kunath S, Voss D, Siggelkow M, Cavus E, Steinfath M, Bein B. Effect of ischemic and pharmacological preconditioning of lower limb muscle tissue on tissue oxygenation measured by near-infrared spectroscopy--a pilot study. BMC Anesthesiol. 2014 Jul 15;14:54. doi: 10.1186/1471-2253-14-54. eCollection 2014. |
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