Objective To establish rabbit model bearing VX2 liver tumor using improved technique,and to analyze the relevant impact factors of hepatic artery and portal vein catheterization.Methods Transplanted liver tumors of 60 healthy New Zealand white rabbits were established through open abdominal puncture and hepatic artery and portal vein catheterization.The rabbits were divided into A group (survival) and B group (death) according to whether a short-term (within 7 days after surgery) death occurred or not.The univariate analysis of the factors which could lead to the death of rabbits were analyzed.The Logistic regression models were established with parameters which were significantly different between the 2 groups,and independent risk factors which could lead to the failure of the experiment were analyzed.Results VX2 tumors were successfully implanted in the liver to all 60 rabbits.Nine (9/60,15.00 ％) rabbits died within 7 days,while 51 (51/60,85.00％) rabbits survived,weight ＜ 2.5 kg,additional intraoperative anesthesia,operation time ≥60 min,length of incision ≥5 cm and blood loss of operation ≥25 ml were impact factors (all P＜0.05).Weight ＜ 2.5 kg,additional intraoperative anesthesia and the blood loss of operation ≥25 ml were independent risk factors for death (P＜0.01).Conclusion Relative high success rate of building rabbit models bearing VX2 liver tumor may achieved using hepatic artery and portal vein catheterization.Larger weight of rabbits,training of surgical skills,less intraoperative blood loss are helpful to avoid intraoperative additional anesthesia,thus reducing mortality of rabbits.

Objective To evaluate the effect of combination of uterine artery chemoembolization and curettage in treatment of caesarean scar pregnancy(CSP),and to analyze the possible influence factors.Methods 46 cases with caesarean scar pregnancy treated by the combination of uterine artery chemoembolization and curettage were retrospectively analyzed.Univariate analysis was made on the factors that might influence the efficacy,and the Logistic regression model was constructed for the significant variables.Results All of the patients were terminated pregnancy succesfully .According to the ultrasound recheck,there were no residual gestational sac tissue in 29 patients,and some residual gestational sac tissue in 17 patients.After the application of traditional Chinese medicine or methotrexate and other symptomatic treatment, the pregnancy was terminated.The univariate analysis showed that the number of cesarean section,the gestational sac volume,the gestational weeks,the type of CSP,and the condition of the fetal heart pulsation were related to the presence of residues in the uterus after treatment (P＜0.05).The multivariate analysis showed that gestational sac volume ＞9 cm3 ,gestational weeks ＞ 7 weeks and exogenous CSP were the independent factors leading to intrauterine residual gestational sac tissue.Conclusion Uterine artery chemoembolization combined with curettage is an effective method for treatment of caesarean scar pregnancy.It is proposed that clinical treatment should pay close attention to the factors that may affect the efficacy.