Measurements
pain
STERILE
The first step in treating HZ‐related pain was antiviral therapy and drug therapy (such as gabapentin, pregabalin, or analgesics). PRF therapy was considered for HZ patients who had not responded to medical therapy.The PRF operation process was as follows. The patient was placed on the operating table in a prone position. The patient was connected to electrocardiogram monitoring, and low‐flow oxygen (2 L/min), ensuring the patient's vital signs were normal. The skin was disinfected and sterile covered. One‐percent lidocaine 3 mL was applied to the local anesthesia. Under digital subtraction angiography guidance, the needle was punctured into the target site (Figure The final needle tip position in fluoroscopic images. (A) The needle was located between T11 and T12 pedicles. (B) The needle was located lateral to the T2 and T3 pedicles.