Surgical tumor excision is a cornerstone of primary cancer treatment, and persistent postoperative pain is common after most surgical procedures. Surgical trauma and pain can cause inflammation, hypothalamic-pituitary axis activation, and sympathetic system over-reactivity. These factors, acting either separately or in combination, affect anti-tumor immunity and promote postoperative immunosuppression. Effective management of perioperative pain may help to modulate the unwanted consequences of the stress response on the immune system and improve outcomes. Based on the recent literature and clinical studies, experts from The Society of Oncological Anesthesia and Analgesia, Chinese Anti-Cancer Association have developed this consensus on the perioperative pain management of cancer patients in China (2020 edition). This consensus aims to provide evidence-based clinical recommendations for the acute pain management of cancer patients postoperatively. It does not apply to chronic pain or pain caused by cancer.

Objective:To investigate the effects of high thoracic epidural anesthesia (HTEA) on the cerebral blood flow (CBF) and hippocampal apoptosis-related proteins Bcl-2 and Bax during global cerebral ischemia and reperfusion (GCI) in rats.Methods:Fifteen-minute global ischemia was established by 4-vessel occlusion and epidural catheterization was performed through T4-5 intervertebral spaces in adult male Wistar rats.According to the different drugs infused into the epidural space,the rats were randomly divided into four groups:Sham group (0.9 ％ NaC1),Sham-HTEA group (0.25 ％ bupivacaine),GCI group (global cerebral ischemia,0.9 ％ NaC1) and HTEA group (global cerebral ischemia,0.25 ％ bupivacaine).And 0.25 ％bupivacaine or 0.9 ％ saline (20 μL·h-1) was infused continuously to the thoracic epidural space from 15 minutes before ischemia to 24 hours after reperfusion.Mean arterial pressure (MAP),heart rate (HR) and cerebral blood flow (CBF) were determined until 2 hours after reperfusion,and the hippocampal Bcl-2 and Bax proteins at 24 hours after reperfusion were examined by Western-blot.Results:Compared with the GCI group,HTEA group has no significant difference on MAP and HR during ischemia and 2 hours after reperfusion,andcompared with the Sham group,MAP in GCI group increased in ischemia 0 min and decreased in reperfusion 0 min.The CBF in HTEA group was significantly lower than that in GCI group (123.1％± 35.2％ vs 177.5％± 32.4％,P＜0.01) in reperfusion 10 min,and higher than that in GCI group during the hypoperfusion of 60 to 120 minutes after reperfusion (P＜0.05),and the ratio of Bax/Bcl-2 in hippocampus was significantly decreased in HTEA group 24 hours after reperfusion (P＜0.01).Conclusions:Continuous HTEA infusion of 0.25 ％ bupivacaine 20 μL ·h-1 could maintain the hemodynamic stability,and improve the CBF of hypoperfusion period in rats,as well as reduce the ratio of Bax/Bcl-2 at 24 hours after reperfusion.

In order to improve the training quality of non anesthesiology professional physicians in anesthesiology department, the anesthesia department of Cancer Hospital affiliated to Harbin Medical Uni-versity Anesthesiology summed up the problems existing in the rotation process of anesthesiology depart-ment in the past, and explored the aesthesia teaching of the standardized doctors. We also improved the teachers' and students' awareness of the importance of anesthesiology learning, formulated standardized training programs, stimulated the interest of residents and teachers, strengthened teachers' teaching ability and teaching consciousness, Through the use of special lectures, case teaching, problem based teaching, we constructed diversified teaching to enhance the students' mastery of knowledge and skills in anesthesiology, and added purposeful examination at the end of rotation. As a result, the quality of anesthesiology rotation of non-anesthesia specialty residents was improved.