Regional anesthesia and pain medicine
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Reg Anesth Pain Med · Jul 2004
Effects of head-up tilt after stellate ganglion block on QT interval and QT dispersion.
The aim of this study is to examine the effects of head-up tilt (70 degrees ) 30 minutes after right or left stellate ganglion block (SGB) on RR interval, QT interval, the rate-corrected QT (QTc) interval, QT dispersion (QTD), and the rate-corrected QT dispersion (QTcD) using computerized measurement. ⋯ Significant increases of QT interval, QTc interval, and QTcD, which are associated with an increased risk of ventricular arrhythmias and cardiac events, occur immediately after head-up tilt in right SGB. However, head-up tilt does not induce increases of QT interval, QTc interval, QTD, and QTcD in left SGB.
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Reg Anesth Pain Med · Jul 2004
Addition of dexmedetomidine prolongs duration of vasodilation induced by sympathetic block with mepivacaine in dogs.
The aim of this study was to examine the duration of vasodilation induced by sympathetic block with the addition of dexmedetomidine to mepivacaine. ⋯ The addition of dexmedetomidine prolongs the duration of vasodilation induced by stellate ganglion block with mepivacaine used for sympathetic block in dogs.