Introduction: Stellate ganglion block (SGB) is commonly performed to treat chronic painful conditions, such as complex regional pain syndrome (CRPS) and postherpetic neuralgia. However, whether it is effective in reducing anesthesia and analgesia requirement during surgery (acute pain) is not known.
Materials And Methods: Sixty American Society of Anesthesiologists (ASA) physical status I and II patients with CRPS type II undergoing surgery for repair of brachial plexus injury were randomized (1:1) to receive SGB with either 10 mL of 0.5% bupivacaine (Group B) or a matching placebo (Group S) before induction of anesthesia.
Results: There was a significant reduction in the requirement of total intraoperative propofol (1659.7 ± 787.5 vs. 2500.7 ± 740.9 mg, P = 0.0003) and fentanyl (190.0 ± 82.5 vs. 327.3 ± 139.3, P = 0.0001) in Group B compared with Group S. Similarly, in Group B, the time to first analgesic was much longer (328 ± 219 vs. 64 ± 116 min, P = 0.000) and postoperative fentanyl requirement for 24 h was lesser compared to Group S (0.6 ± 1.1 vs. 2.1 ± 1.3 μg/kg, P = 0.000).
Conclusion: SGB is effective in reducing the requirement of intraoperative propofol and fentanyl as well as decreasing opioid requirement in the postoperative period in patients with CRPS type II undergoing surgery.
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