Quantification of the effectiveness of the stellate ganglion block using fMRI

我们使用电流感知阈值（CPT）和范围电流感知阈值（RCPT）评估了星状神经节阻滞（SGB）与氙灯照射（XLI）对正颌手术后神经感觉缺陷的有效性。因为患者没有同意，所以我们不能做fMRI。术前、术后1周及SGB（29侧）和XLI（69侧）治疗10次后，以3种不同神经纤维类型的刺激频率测量98侧精神区CPT和RCPT阈值。比较CPT和RCPT值，并以手术因素评价。SGB组治疗后各项CPT及RCPT值的变化量均明显低于XLI组。CPT和RCPT值与手术因素无相关性。结论星状神经节阻滞可能是治疗正畸术后神经感觉缺损的有效方法。

We evaluated the effectiveness of the stellate ganglion blockade(SGB) compared with xenon light irradiations(XLI) with neurosensory deficit after orthognathic surgery using current perception threshold(CPT) and Ranged current perception thresholds(RCPT).Because the consent was not taken by the patients, we could not take the fMRI.CPT and RCPT thresholds in the mental area of 98 sides were measured at stimulation frequency assessing 3 different nerve fiber types before surgery, 1 week after surgery and after treatments of 10 times by SGB(29 sides) and XLI(69 sides). These CPT and RCPT values were compared and were evaluated by surgery factor .The amounts of change of all CPT and RCPT values of the SGB group were significantly decreased than XLI group's after treatment. There was no correlation between CPT and RCPT values and surgery factors.It is concluded that stellate ganglion blockade might be an effective method for treatment of neurosensory deficits after the orthognatic surgery.