Trend Rating Rating Resolution

Data collection

We have revised the records of all patients with GSV veins who were treated in the Department of General Surgery of the Second Related Hospital of Xuzhou Medical University between January 2009 and December 2009 and December 2019. (3) Repetition of varicose veins; (4) Combined GSV involvement and small clear vein vein. (5) preoperative phlebitis. (6) In the presence of acute systemic infectious diseases. (7) Consent is not provided. and (8) patients who had no other causes. Patients were divided into two groups: EVLT and CS. Clinicopathological data, including sex, age, start time, clinical classification, time of surgery, surgical technique and complications. All patients underwent deep feilography before surgery to exclude the thrombosis of the deep vein.

A flow chart of this study is presented in the figure 1. The study was approved by the Ethics Committee of the Second Connected Hospital of Xuzhou Medical University.

Procedures

Conventional surgery: An oblique section, about 5 cm long, was parallel to the groin ligament with the oval skirt as the medium, in the right pubic bone and two transverse fingers down. The skin, subcutaneous tissue and superficial fascia were injected to expose the oval skirt and the conflux of GSV and the femoral vein was cut off. The surface vein of the hare, the surface ventricular vein wall and the outer vein that have been cut and the inner and outer femoral veins were linked and cut respectively. The GSV was released at the intersection with the femoral vein and was attached and tightened with the fourth line from the femoral vein. The staple was made after connection to the proximal end and the remote end temporarily tightened with hemostatic tongs to wait for the posting. Hemostatic tongs were used to open the remote end of the GSV and to insert a vein solvent and a temporary connection was carried out using the silk thread to control the bleeding. The partition was slowly proceeded to the lower leg. After the divisor entered the top of the inner ankle, a small incision was made in this position to separate and cut the GSV. The remote end was connected and the near end was connected to the solvent. The separate was then pulled upwards to slowly export GSV. The skin in the GSV severe varicose veins was cut, subcutaneous separation, the communication industry was connected and cut, the vein circuit was fully peeled and cut and the incisions were shifted sequentially.

EVLT: The clear vein case surrounding GSV was injected under anesthesia with tumor (normal saline 500 ml, 10 ml 1% lidocaine and 0.5 ml 0.1% adrenaline) under the guidance of ultrasound. The clear vein was then pierced in front of the Malleolus average under ultrasound guidance, with the core of the perforation needle removed and exchanged for a 5F tuber. A Long Guidewire 0.035 was inserted by the Cleinisk at the GSV junction and the femoral vein and a 5F catheter was sent along the driver at 1 cm below the venous vein junction. Under the guidance of the catheter, a cross-section of 2 cm below the groin was released, GSV was released and after the catheter recede 2-5 cm, the clear vein was dual 1 cm below the venous vein junction. The driver seat was then exported and the fiber was promoted through the catheter until the fiber head was 1 cm below the GSV connection and the end of the fiber head was more than 2 cm beyond the end of the catheter. The optical fiber was associated with the semiconductor laser treatment instrument, whose power (14 W for the GSV trunk), with linear endogenous energy density of 80-100 J/cm, using a laser source of 810 Nm (Leifukang, Shanghai, China, 1.5 S Pulse.

Subsequently, multi -point laser closure for each branch of varicose veins and each branch of varicose veins were cautious. After strict haemostasis, the incisions were stitched using absorbable stitches.

After CS or Evlt, the affected end was wrapped in a rubber bandage to exert pressure. Patients helped get out of bed and perform a small amount of activity 6 hours after operation and the bandages were removed after 72 hours. All patients wore medical elastic socks for at least 3 months after being rejected by the hospital.

Follow up: Varicose vein ratings were usually performed 1-4 weeks, 3-6 MO and 2 years after the procedure. The repetition was confirmed by an ultrasound Doppler examination during monitoring, indicating the local recurrence or torsion reconstruction. In cases of severe relapse, patients showed visible veins of varicose veins and experienced clinical symptoms during the follow -up period. Pain levels, as measured on a visual analog scale (VAS) ranging from 0 (no pain) to 10 (worst possible pain) were assessed 1 week after the procedure.

PSM: We used the closest matching method without a replacement for a voltage rating in a one-to-one race. We tried the match algorithm using a voltage score histogram and a graph to standardize the average differences based on logical regression. The match was made using 0.02 bench.