Supraclavicular Versus Interscalene Block

A Randomized Comparison of Ultrasound-guided Supraclavicular and Interscalene Block After Shoulder Surgery

We hypothesize that both ultrasound-guided supraclavicular and interscalene block provide similar analgesia after shoulder surgery.

Interscalene block provides effective postoperative analgesia after shoulder surgery. However, it can be associated with significant risk including the phrenic nerve palsy. Previous study reported that ultrasound-guided interscalene and supraclavicular blocks are effective and safe for shoulder arthroscopy.

Inclusion Criteria:

American Society of Anesthesiologists physical status I-III inpatients undergoing shoulder surgery

Exclusion Criteria:

pregnancy, severe respiratory disease, preexisting neuropathy in the operated arm, coagulopathy, allergy to study medication