1.Analysis of X-ray signs to confirm the successful puncture in shoulder MR arthrography with low dose of contrast agent
Yuqing ZHAO ; Wen CHEN ; Cui REN ; Chaonan PANG ; Huishu YUAN
Chinese Journal of Radiology 2020;54(6):568-572
Objective:To explore the value of X-ray signs with applying low dose of contrast agent to confirm successful puncture in direct shoulder MR arthrography.Methods:In total 669 patients who underwent shoulder MR arthrography in Peking University Third Hospital from January 2016 to August 2018 were retrospectively analyzed. All patients received the anterior approach puncture in shoulder arthrography. X-ray films were taken after 1-2 ml contrast agent was injected. Six X-ray signs of contrast agent distribution were recorded. MR arthrography findings were used to confirm whether the puncture was success. Kappa analysis was used to verify the consistency between each 2 signs. The accuracy rate of each X-ray sign to confirm the successful puncture was calculated. X-ray signs were paired to define the best diagnostic index of successful puncture.Results:Successful puncture was performed in arthrographies for all 669 cases .The displaying rates of six signs were as follows. Contrast agent distribution at overlapping humeral head away from the needle was 66.8% (447/669), in axillary recess was 64.7% (433/669), in glenohumeral space was 93.9% (628/669), in subscapular bursa was 69.8% (467/669), in sheath of long head tendon of biceps brachii (LHBT) was 1.9% (13/669), between LHBT and supraspinatus tendon was 17.2% (115/669). Consistency of each 2 signs was poor (Kappa<0.2), in which the poorest consistency was found between contrast agent overlapping humeral head away from the needle and contrast agent in glenohumeral space (Kappa=-0.115). With combining the above 2 signs, the accuracy rate for defining successful puncture was 100% (669/669).Conclusion:In direct shoulder arthrography by anterior approach, X-ray signs with low dose of contrast agent can be regard as the method to confirm successful puncture. The accuracy rate of the signs of contrast agent distribution at overlapping humeral head away from the needle or in glenohumeral space to define a successful puncture is 100%.
2.Measures of controlled low central venous pressure in major hepatectomy
Xiuzhen LIU ; Mingying LI ; Chaonan REN ; Qiuhua ZHAO ; Wenbing SUN
Chinese Journal of Hepatobiliary Surgery 2020;26(6):469-471
Major hepatectomy (MH) is a common treatment for benign and malignant liver diseases. Controlled low central venous pressure (CLCVP) is an important measure to reduce the intraoperative blood loss and transfusion requirement during MH. In this paper, the application standard of CLCVP at MH is discussed, and the specific measures to achieve CLCVP including fluid restriction, drug application, body gesture adjustment, reduction of tidal volume, suspension of respiratory ventilation, and infrahepatic inferior vena cava clamping (complete and partial) are systematically summarized.
3.Evaluating the importation of yellow fever cases into China in 2016 and strategies used to prevent and control the spread of the disease
Chao Li ; Dan Li ; Shirley JoAnn Smart ; Lei Zhou ; Peng Yang ; Jianming ou ; Yi He ; Ruiqi Ren ; Tao Ma ; Nijuan Xiang ; Haitian Sui ; Yali Wang ; Jian Zhao ; Chaonan Wang ; Yeping Wag ; Daxin Ni ; Isaac Chun-Hai Fung ; Dexin Li ; Yangmu Huang ; Qun Li
Western Pacific Surveillance and Response 2020;11(2):5-10
Abstract
During the yellow fever epidemic in Angola in 2016, cases of yellow fever were reported in China for the first time. The
11 cases, all Chinese nationals returning from Angola, were identified in March and April 2016, one to two weeks after
the peak of the Angolan epidemic. One patient died; the other 10 cases recovered after treatment. This paper reviews the
epidemiological characteristics of the 11 yellow fever cases imported into China. It examines case detection and disease
control and surveillance, and presents recommendations for further action to prevent additional importation of yellow fever
into China.