Huang Bing, Zhou Xu-Yan, Lu Ya-Ping, Zhu Ze-Feng, Hou Jian, Sun Jian-Liang, Xie Guo-Shui, Zhu Sheng-Mei, Zheng Han-Guang
Department of Anesthesiology, First Affiliated Hospital of Jiaxing Medical College, Jiaxing 314000, China.
Zhonghua Yi Xue Za Zhi. 2008 Apr 1;88(13):885-8.
To present the experience in a technique used to treat intractable postherpetic neuralgia (PHN)-percutaneous dorsal root ganglion (DGR) radiofrequency thermocoagulation guided by CT scanning.
Sixteen PHN patients underwent puncture of radiohealing needle into the superior 1/3 of the corresponding intervertebral foramen guided by CT. Electric stimulation test and impedance test were conducted to confirm the right spot. Radiofrequency heat coagulation therapy under the condition of 90 degrees C 90 s was performed for 3 cycles. Then mixture of betamethasone and lidocain was injected and the needle was pulled out. CT was conducted to observe if pneumothorax occurred. The patients were followed up for 2-16 months.
Radiofrequency thermocoagulation was performed on 45 target dorsal root ganglia in 16 PHN patients with the effect of immediate disappearance of hyperalgesia. Remaining spontaneous pain was seen in 5 cases, however, with decreases of attack frequency and severity. The visual analogue pain scale score was decreased from 7-9 before the procedure to 2-3 after the procedure. No relapse was found during the follow-up.
Selective percutaneous DRG radiofrequency thermocoagulation guided by CT scanning is effective in treatment of PHN.
介绍一种用于治疗顽固性带状疱疹后神经痛（PHN）的技术——CT扫描引导下经皮背根神经节（DGR）射频热凝术的经验。
16例PHN患者在CT引导下将射频治疗针穿刺至相应椎间孔上1/3处。进行电刺激试验和阻抗试验以确定正确位置。在90℃ 90秒的条件下进行3个周期的射频热凝治疗。然后注射倍他米松和利多卡因混合液并拔出针。进行CT检查观察是否发生气胸。对患者进行2至16个月的随访。
对16例PHN患者的45个目标背根神经节进行了射频热凝，结果痛觉过敏立即消失。然而，5例仍有自发痛，但发作频率和严重程度降低。视觉模拟疼痛量表评分从术前的7至9分降至术后的2至3分。随访期间未发现复发。
CT扫描引导下选择性经皮背根神经节射频热凝术治疗PHN有效。
