Nk-1 receptor antagonist, 5-ht3 receptor antagonist and dexamethasone antiemetic regimen to prevent nausea and vomiting induced by chemotherapy drugs with high emetic risk for several days

Interventions: single arm:Nk-1 receptor antagonist, 5-ht3 receptor antagonist and dexamethasone antiemetic regimen
Primary outcome(s): According to the international evaluation system for adverse reactions to chemotherapy drugs (CTCAE) version 4.03. Nausea is defined as a condition characterized by nausea and/or an urgent need for vomiting.;Complete remission rate (CR): number of CINV complete remission patients/number of chemotherapy patients x100%; CINV complete remission was defined as (CTCAE) version 4.03, nausea and vomiting grade 0 (no nausea and vomiting).;Adverse reactions: adverse events and laboratory tests were graded according to NCI CTC AE 4.0, and special attention should be paid to early withdrawal from the study as well as vital signs (such as blood pressure, body temperature, etc.), intestinal obstruction, intractable hiccups, uncontrollable headaches, etc.
Study Design: Single arm