HPE CINV Pocket Guide 2018 | Page 15

In a web survey of 154 oncology practitioners in the UK, it was shown that there was great variability in the antiemetic prescriptions used, most were not in accordance with international guidelines, including in the doses of antiemetics used. 4 Overall, clinicians undertreated patients receiving highly emetogenic chemotherapy and overtreated patients receiving low and minimally emetogenic chemotherapy, with more consistent practice related to acute nausea and vomiting rather than delayed nausea and vomiting. 4 In the same study, it was reported that by providing guideline-consistent treatment in those patients overtreated unnecessarily, it would also lead to cost reductions of about £4381 for every 100 patients treated for each cycle of chemotherapy. 4 In addition, overtreatment can lead to unwanted side effects (for example, constipation with the use of 5-HT3 receptor antagonists (RAs) or dyspepsia and insomnia with the use of dexamethasone, etc), which add to the patients’ symptom burden and necessitate more healthcare resources for their management. Similar conclusions were reported in a Japanese study that compared costs of a two-drug antiemetic treatment (ondansetron and dexamethasone) and a single agent treatment (dexamethasone alone, as per guidelines) and found not only that treatment outcomes were not significantly different in the two groups, but also that in the latter group there was an annual cost saving of US$78,883 in docetaxel-treated patients. 5 Cost reductions from using guideline- consistent antiemetics were also shown in another large European prospective study (n=991) where such use was associated with significantly fewer specialist visits (p=0.002), fewer emergency room visits (p=0.004), fewer visits to the general practitioner (p=0.062, borderline not significant), with five days of hospitalisation on average in this group compared with ten in the guideline non- consistent group (not significant p value). 6 Most importantly, the effectiveness of the regimens used in the guideline-consistent group led to a nausea/vomiting hospitalpharmacyeurope.com | 2018 | 15