Chemotherapy-induced nausea and vomiting (CINV) continue to negatively influence the quality of life of both adult and pediatric cancer patients (Dupuis et al., 2010; Farrell et al., 2013; Russo et al., 2014; Hinds et al., 2009; Sommariva et al., 2016). Vomiting and retching are symptoms that can be assessed objectively while nausea, a subjective symptom, is more difficult to quantify. Adult cancer patients can usually describe the severity of the nausea they feel using self-report visual analog or adjectival rating scales. Instruments such as the Multinational Association of Supportive Care in Cancer Antiemesis Tool (available from www.mascc.org) have been validated for this purpose and are recommended by experts in the field (Hesketh et al., 2015).