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Subject Area

Anesthesiology

Document Type

Original Study

Abstract

Objective: To compare the effect of ultrasound-guided (USG) low volume ISB and combined SSNB+ANB in shoulder arthroscopy. Background: The most-popular treatment for shoulder post-operative pain is an interscalene block (ISB) but not without complications. Combined suprascapular nerve block and axillary nerve block (SSNB+ANB) has recently been proposed as a safe alternative. Methods: A randomized blinded study was conducted at Menoufia University Hospital. After approval by the ethics committee, 50 patients were allocated into two groups; group A received USG pre-operative 10mL bupivacaine 0.5% in the area between C5-C6 roots and group B received pre-operative USG 10mL bupivacaine 0.5% under supraspinatus muscle plus 10mL bupivacaine 0.5% ANB in the quadrilateral triangle. Heart rate (HR) and mean arterial pressure (MAP) were measured every 5min intra-operative, every 15min in recovery room and every 4hours in the ward. VAS score every 15min in recovery room, every 2hours in the ward. Block performance time, morphine consumption, patient satisfaction and complications were recorded. Results: HR, MAP and VAS showed no statistically significant differences between two groups. The mean performance time in group A was significantly lower than that in group B (P=

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