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Scalp infiltration with Epinephrine- containing lidocaine solution is common method for craniotomy but it may result in transient but significant hypotension in patients undergoing neurosurgery. Dexmedetomidine, a potent alpha2 adrenoceptor agonist which dose-dependently reduces arterial blood pressure and heart rate, decreases the hemodynamic and catecholamine response, and dexmedetomidine has an effect of peripheral vasoconstriction thus it is thus theologically appropriate for reducing bleeding during scalp incision in craniotomy.
The aim of this study is to compare the effect of dexmedetomidine-lidocaine solution on hemodynamic response, scalp bleeding to epinephrine-lidocaine solution.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Dex group | Experimental | dexmedetomidine-lidocaine solution, |
|
| Control group | Active Comparator | epinephrine-lidocaine solution |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| scalp infiltration solution | Drug | Dex group: Dexmedetomidine 2mcg/ml-containing 1% lidocaine scalp injection by neurosurgeon(dosage: according to incision length) |
|
| Measure | Description | Time Frame |
|---|---|---|
| Mean arterial pressure | before scalp injection(T0), after scalp injection every half minute until five minutes(T0.5, T1, T1.5, T2, T2.5, T3, T3.5, T4, T4.5, T5), every minute(T6, T7, T8, T9, T10, T11, T12, T13, T14, T15) | before and after scalp injection |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Severance hospital | Seoul | 120-752 | South Korea |
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| scalp infiltration solution | Drug | 1:100000 epinephrine-containing 1% lidocaine scalp injection by neurosurgeon(dosage: according to incision length) |
|