Objective:To analyse the effect of ultrasound-guided percutaneous liver biopsy and the coaxial biopsy needle tract radiofrequency ablation on patients diagnosed with hepatocellular carcinoma who are considered to be at risk of bleeding.Methods:The data of 117 patients with hepatocellular carcinoma who underwent coaxial biopsy needle tract radiofrequency ablation after ultrasound-guided percutaneous liver biopsy in Peking University First Hospital from March 2019 to April 2023 were retrospectively analysed. There were 95 males and 22 females, with the age of (62.0±11.8) years. A comprehensive analysis was conducted on the following variables: the pre-puncture platelet count, the international standardised ratio, anticoagulation therapy, the haemoglobin (Hb) level, the success rate of the liver puncture, the qualified rate of liver puncture specimens, the number of puncture samples, the length of hospital stay, the Hb level after puncture, bleeding within 10 days post-operation, and complications after ablation, including biliary fistula, hemothorax and organ perforation.Results:Among the 117 patients, 60 cases (51.3%) had an international normalized ratio >1.1, 40 cases (34.2%) had thrombocytopenia, that is, <150×10 9/L, and 17 cases (14.5%) received continuous anticoagulation therapy before the operation. It is evident that all 117 patients successfully completed the ultrasound-guided percutaneous liver biopsy, and that all liver biopsy specimens were qualified. The absence of biliary fistula, hemothorax, organ perforation or death in the patients post-ablation was noted. According to the adverse event evaluation criteria, version 5.0, 113 cases (96.6%) were classified as grade 1 and 4 cases (3.4%) were classified as grade 3. The Hb concentration of patients with minor bleeding (grade 1) prior to puncture was (119.7±22.2) g/L, which was significantly higher than the Hb concentration of patients with severe bleeding (grade 3), (76.0±10.4) g/L ( t=3.92, P=0.010). A meticulous examination of the data revealed that there were no statistically significant differences between the two groups with regard to pre-puncture platelet count, pre-puncture international standardised ratio, pre-puncture proportion of receiving anticoagulant drugs, length of hospital stay and number of puncture samples (all P>0.05). Conclusion:For patients with hepatocellular carcinoma who are at risk of bleeding, ultrasound-guided percutaneous liver biopsy followed by coaxial biopsy needle tract radiofrequency ablation can obtain satisfactory liver tissue samples and is relatively safe. There were differences in hemoglobin levels before puncture among patients with different bleeding after puncture.

Objective:To analyse the effect of ultrasound-guided percutaneous liver biopsy and the coaxial biopsy needle tract radiofrequency ablation on patients diagnosed with hepatocellular carcinoma who are considered to be at risk of bleeding.Methods:The data of 117 patients with hepatocellular carcinoma who underwent coaxial biopsy needle tract radiofrequency ablation after ultrasound-guided percutaneous liver biopsy in Peking University First Hospital from March 2019 to April 2023 were retrospectively analysed. There were 95 males and 22 females, with the age of (62.0±11.8) years. A comprehensive analysis was conducted on the following variables: the pre-puncture platelet count, the international standardised ratio, anticoagulation therapy, the haemoglobin (Hb) level, the success rate of the liver puncture, the qualified rate of liver puncture specimens, the number of puncture samples, the length of hospital stay, the Hb level after puncture, bleeding within 10 days post-operation, and complications after ablation, including biliary fistula, hemothorax and organ perforation.Results:Among the 117 patients, 60 cases (51.3%) had an international normalized ratio >1.1, 40 cases (34.2%) had thrombocytopenia, that is, <150×10 9/L, and 17 cases (14.5%) received continuous anticoagulation therapy before the operation. It is evident that all 117 patients successfully completed the ultrasound-guided percutaneous liver biopsy, and that all liver biopsy specimens were qualified. The absence of biliary fistula, hemothorax, organ perforation or death in the patients post-ablation was noted. According to the adverse event evaluation criteria, version 5.0, 113 cases (96.6%) were classified as grade 1 and 4 cases (3.4%) were classified as grade 3. The Hb concentration of patients with minor bleeding (grade 1) prior to puncture was (119.7±22.2) g/L, which was significantly higher than the Hb concentration of patients with severe bleeding (grade 3), (76.0±10.4) g/L ( t=3.92, P=0.010). A meticulous examination of the data revealed that there were no statistically significant differences between the two groups with regard to pre-puncture platelet count, pre-puncture international standardised ratio, pre-puncture proportion of receiving anticoagulant drugs, length of hospital stay and number of puncture samples (all P>0.05). Conclusion:For patients with hepatocellular carcinoma who are at risk of bleeding, ultrasound-guided percutaneous liver biopsy followed by coaxial biopsy needle tract radiofrequency ablation can obtain satisfactory liver tissue samples and is relatively safe. There were differences in hemoglobin levels before puncture among patients with different bleeding after puncture.

Objective:To evaluate the safety and effectiveness of transjugular intrahepatic portosystemic shunt (TIPS) in hepatocellular carcinoma (HCC) patients with Vp4 portal vein tumor thrombus (PVTT).Methods:Data of 15 patients undergoing TIPS for HCC with Vp4 PVTT and portal hypertension (PTN) in Peking University First Hospital from July 2018 to February 2023 were retrospectively analyzed, including 14 males and 1 female, aged (61.5±11.1) years old, ranging from 40 to 78 years old. The success rate of TIPS, portal pressure gradient (PPG) before and after procedure, perioperative adverse effects and complications were recorded. The survival status of patients was followed up by telephone review after surgery. Kaplan-Meier method was used for survival analysis.Results:The procedure of TIPS was performed uneventfully in all patients, with a technical success rate of 100% (15/15). PPG before and after TIPS were (31.73±5.48) mmHg (1 mmHg=0.133 kPa) and (17.60±3.66) mmHg, respectively, and the difference was statistically significant ( P<0.001). No perioperative death, hepatic artery or bile duct injury, acute liver failure or other major complications occurred. Compared with the preoperative status, the performance status scores [0(0, 0) vs. 3(3, 3)] and Child-Pugh scores [6(5, 8) vs. 9(8, 10)] were lower in patients one month after TIPS (all P<0.05). The median survival time was 228 d. Kaplan-Meier curves showed that the cumulative survival rates at 3, 6, 12 and 24 months after TIPS were 100%, 64.3%, 32.7% and 8.2%, respectively. Conclusion:TIPS could be safe and effective for HCC with Vp4 PVTT and severe PTN.

Objective To explore the clinical value of lidocaine combined with remifentanil intravenous anesthesia for radiofrequency ablation of liver tumors.Methods Totally 1 252 patients with hepatic tumors treated by radiofrequency ablation were analyzed.RITA cluster multipole radio needles were used in all cases.Local anesthesia with lidocaine was used before percutaneous puncture,and the dosage was 2 mg/kg of body mass.The initial dose of remifentanil was injected with pump at 0.05 μg/(kg · min) during operation.Mean arterial pressure (MAP),heart rate (HR) and saturation of peripheral oxygen (SPO2) were recorded 24 h before radiofrequency ablation (T0),at the beginning of operation (T1),30 min after operation (T2) and at the end of surgery (T3).Visual analogue scale (VAS) was used to assess the analgesic effect during the whole ablation procedure.Results Radiofrequency ablation were successfully performed in 1 250 patients (1 250/1 252,99.84％).The average time was (59.02 ±14.63) min.The average dosage of remifentanil was (242.22± 22.73)μg.The average VAS score was (2.42± 1.13) points.Compared with the preoperative T0 time point,SPO2 did not change significantly at each time of T1,T2 nor T3,but MAP and HR were significantly higher than those before operation (both P＜0.05).VAS scores were significantly higher in patients with tumors size ＞5 em than those in patients with tumors size ≤5 cm (P＜0.05).VAS scores were significantly higher in patients with lesions under hepatic capsule and in diaphragm dome than in patients with lesions in other parts (both P＜0.05).Severe anesthesia related complications occured in 2 patients,related to the respiratory inhibitory effect of remifentanil,and the patients were completely recovered after corresponding treatment.Conclusion Lidocaine combined with remifentanil intravenous anesthesia for radiofrequency ablation of liver tumors can effectively relieve the pain in patients.Tumor size and tumor location are the main impact factors on analgesic effect.

Objective To evaluate the safety and effectiveness of TACE with radiofrequency ablation (RFA) in treatment of renal cell carcinoma.Methods Data of 23 cases of renal cell carcinoma were retrospectively analyzed.Firstly all patients were treated with renal TACE,and then RFA under the guidance of ultrasound and CT was performed 3 to 4 weeks later.The therapeutic effects were evaluated by enhanced CT or MR scans during the follow-up period.Meanwhile,the changes of Karnofsky Performance Status (KPS) scores and renal functions between preoperative and postoperative periods were also evaluated.Results To the end of the follow-up,in all 23 patients 21 cases (21/23,91.30％) survived and 2 cases died (2/23,8.70 ％).KPS scores and serum creatinine levels were observed in all 23 patients at the initial stage and the end of the follow-up period,there were no significant differences (all P＞0.05).At the end of follow-up,16 cases were complete remission,5 were partial remission and 2 were progressive disease.Conclusion TACE combined with RFA is a safe and effective method in treatment of renal cell carcinoma with less trauma,less complication and more effective.

ObjectiveTo study the risk factors and pathogenic characteristics of ventilator associated pneumonia(YAP). MethodsRisk factors of VAP,pathogens and drug resistance in 118 patients in ICU were analyzed retrospectively. ResultsThe incidence of VAP was 44.9％, and age, the mechanical ventilation time, state of consciousness,tracheotomy,the antibiotic combination are risk factors of incidence of VAP. 53cases of VAP(68.2％ )were infected by Gram negative bacilli,25.9％ were by Gram positive cocci,and 5.9％ were by fungi. Drug resistance was observed obviously. ConclusionThe occurrence of VAP was related with multiple factors. The gram negative bacteria are the major pathogens of VAP, and the rate of drug resistance was high. The occurrence of VAP could severely affect patients' prognosis.

Objective To discuss the clinical characteristics of thalamic hemorrhage,the correlative risk factor and the factors influencing prognosis.Method The clinical datas of 74 cases of thalamic hemorrhage and CT examination results were analyzed to find out the relationship between the clinical characteristics and the prognosis.Results The old age and hypertension were the main causes of thalamic hemorrhage.The mortality of thalamic hemorrhage that rupturing into ventricle was higher than that not rupturing into ventricle.Conclusions The old age and hypertension are the main causes of thalamic hemorrhage.The clinical manifestation of thalamic hemorrhage is variety.The prognosis is related weith age,blood pressure and the present of rupturing into ventricle.

Objective To explore the etiology of pulmonary atelectasis and explore the value of fiberoptic bronchoscope in the diagnosis and treatment of pulmonary atelectasis.Methods 192 cases of pulmonary atelectasis confirmed by thoracic X-ray and CT were examined and treated under fiberoptic bronchoscope.Results The final cause of 192 cases pulmonary atelectasis was lung cancer in 122 cases,chronic inflammation in 35 cases,tuberculosis in 24 cases,foreign body in 3 cases,blood clot obstruction in 3 cases,no clear causes in 5 cases;97.4% of pulmonary atelectasis were diagnosed.The treatment of pulmonary atelectasis caused by tumor obstruction was ineffective under fiberoptic bronchoscope;Then for others,atelectasis of patients was re-expanded completely in 65.7% after treatment one week under fiberoptic bronchoscope,re-expanded partially in 27.1% and the effective rate was 92.8%.Conclusion The rate of etiologic diagnosis of pulmonary atelectasis under fiberoptic bronchoscope is high;The main causes of pulmonary atelectasis are lung cancer,chronic inflammation and tuberculosis.The pulmonary atelectasis with no clear cause should be examined with fiberoptic bronchoscope.The treatment under fiberoptic bronchscope is effective for non-tumor atelectasis.