RESUMO
Objective To evaluate the clinical effectiveness of percutaneous transhepatic gallbladder drainage introduced by bedside ordinary-probe-guidance with free-hand technique in severe cholecystitis. Methods 85 cases treated with the operation were observed and analyzed. Results Infectious bile was successfully drained in all cases without serious complications. 83 cases received satisfactory outcomes. 2 elderly patients died from MODS secondary severe infection. Conclusion Bedside ordinary-probe-guided free-hand percutaneous transhepatic gallbladder drainage is a safe and convenient treatment with minimal invasion for severe cholecystitis, which can be widely used in clinic.
RESUMO
Objective: To evaluate the surgView-RFT electromagnetic navigation system in radiofrequency thermocoagulation(RFT). Methods: 6 foramen ovales of 3 cadavers were punctured by 3 beginners. Every one tried 5 times by free-hand and 5 times by SurgView-RFT electromagnetic navigation-guidance. After each puncture, CT scans were used as golden standard to measure the distance between the tip of needle and the anterior margin of the foramen ovale. T test and variance of SAS 6.12 statistical software was used to do the statistic analysis. Results: The punctures by free-hand failed, and the distances between the tip of needle and the anterior margin of the foramen ovale were 8-10.6 mm. The punctures by navigation guidance were successful, and the distances between the tip of needle and the anterior margin of the foramen ovale were 2.68-3.54 mm. The error of navigation system was 0.59 mm which was verified by CT scan. There was significant difference between free-hand puncture and navigation-guided puncture. Conclusion: The surgView-RFT electromagnetic navigation system is characteristic with high performance, high accuracy and minimal invasion, while it is applied in training or clinical using.