Acupoint Electric Stimulation Combined With Tropisetron in Preventing and Treating Nausea and Vomiting After TACE

Inclusion Criteria: * ECOG physical status 0,1,2 * would accept the transcatheter hepatic arterial chemoembolization of primary or metastatic liver cancer patients; * Adult male and female 3, age 18 years old; * the chem-scheme of arterial infusion chemotherapy based on oxaliplatin dosage of 200mg; * signed the informed consent and understand the study design; * Organ function examination in patients must meet the following laboratory indexes: Neutrophil\>500/Ul, hemoglobin \> 8 gm/dL, platelet \>100000/uL,Creatinine \< 2 mg/dL bilirubin \< 1.5 mg/dL, , alanine aminotransferase \< 3 times the normal value, albumin \>30g/L * understand and complete quality of life scale ; * women of childbearing age urine pregnancy test was negative. Exclusion Criteria: * The combined use of other venous chemotherapy within 5 days after TACE; * skin infection on or near the points; * skin hyperalgesia, unable to withstand electrical stimulation; * other confounding factors may cause nausea and vomiting (such as intestinal obstruction, anorexia, etc.); * heart, cerebrovascular accident history or the history of spinal cord injury; * intestinal obstruction lead to nausea and vomiting * installing pacemaker; * cognitive dysfunction, unable to finish Scale; * currently using acupuncture therapy.