This study evaluates the analgesia induced by suprascapular nerve block in comparison to interscalene nerve block in arthroscopic rotator cuff repairs. The experimental and the control group will receive the suprascapular nerve block and interscalene nerve block, respectively.
Peripheral nerve blocks are widely used for postsurgical analgesia. Interscalene nerve block provides a total brachial plexus motor and sensitive blockade while the suprascapular nerve block produces only a specific peripheral blockade. The interscalene nerve block is the most frequently used anesthesia technique and requires a longer learning curve. Complications related to this technique may be more severe and frequent in comparison to other regional anesthesia techniques. The suprascapular nerve block yields less adverse effects, discomfort and rebound effect as this technique does not completely block the upper limb motor function.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
98
The patient lies supine in beach chair position with surgical drapes on. The anatomical landmarks are outlined and the infiltration spot is identified. The block is performed with 10 ml ropivacaine 0.75%.
The patient lies supine position with the head turned to the contralateral side to the block. A linear high-frequency ultrasound probe is used for identifying the roots of supraclavicular brachial plexus using the traceback technique. The block is performed with 15 ml ropivacaine 0.5%.
Conventional arthroscopic rotator cuff repair.
Irmandade Santa Casa de Misericordia de Porto Alegre
Porto Alegre, Rio Grande do Sul, Brazil
Pain intensity: Numeric Pain Rating Scale
Numeric Pain Rating Scale - no pain (0), unbearable pain (10)
Time frame: 1 hour after surgery
Pain intensity: Numeric Pain Rating Scale
Numeric Pain Rating Scale - no pain (0), unbearable pain (10)
Time frame: 24 hours after surgery
Pain intensity: Numeric Pain Rating Scale
Numeric Pain Rating Scale - no pain (0), unbearable pain (10)
Time frame: 48 hours after surgery
Pain intensity: Numeric Pain Rating Scale
Numeric Pain Rating Scale - no pain (0), unbearable pain (10)
Time frame: 72 hours after surgery
Opiate Consumption
Total amount of narcotics consumed during the postoperative period measured in morphine equivalents (OME).
Time frame: Postoperative hours 1-72
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