“…Literature claims an average ANV frequency of 30% [3]ranging from 28 to 50% in the various series [4, 5, 6, 7, 8, 9, 10, 11]; these prevalence rates have remained largely unchanged over the last years, despite the availability of new 5-HT 3 receptor antagonists [12]. The type of chemotherapy, distinct measurement methodologies [10, 13], severity and duration of previous chemotherapy-associated NV [14, 15, 16, 17, 18, 19], and patient heterogeneity (younger age [7, 11, 15, 20], susceptibility to motion sickness [21], smells and tastes during chemotherapy [10, 22], preexisting anxious state [4, 10, 17, 23, 24], pretreatment expectations of chemotherapy-related nausea [25]) may account for the reported variability.…”