Abstract
Conclusion: A stellate ganglion block (SGB) based on the goal of improving internal ear circulatory disturbance appears to be beneficial for the treatment of sudden hearing loss. Objectives: To evaluate the effectiveness of SGB for sudden hearing loss. Methods: This retrospective study reviewed the medical records of 49 patients who received SGBs and 496 patients who received only conservative therapy, primarily with systemic steroids, for treatment of sudden hearing loss. Propensity scores were used in pairwise matching of these patients to avoid selection biases between the two treatment modalities. Results: Propensity score matching yielded 48 pairs. The mean therapeutic effect of the SGB was calculated to be 0.40 ± 0.20 (mean ± standard error, p = 0.051).
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