Ten years of Croatian national guidelines for use of eicosapentaenoic acid and megestrol acetate in cancer cachexia syndrome - Evaluation of awareness and implementation among Croatian oncologists

Background & aims: Cancer cachexia (CC) syndrome and anorexia-cachexia syndrome are common terms used to describe changes in metabolism with increased inflammatory activity and can progressively develop through various stages such as pre-cachexia; cachexia; and refractory cachexia. Therefore in year 2007 Croatian guidelines for use of eicosapentaenoic acid and megestrol acetate in cancer cachexia syndrome were published. Aim of this study was to assess the awareness and implementation of Croatian guidelines for use of eicosapentaenoic acid (EPA) and megestrol acetate (MA) into clinical practice among Croatian oncologists approximately 10 years after the publication, but also to point out the importance of adequate recognition and treatment of CC.

Methods: Survey with questions was designed to assess the awareness and implementation of Croatian guidelines for use of EPA and MA into clinical practice and was distributed among all Croatian oncologists in secondary and tertiary hospital centers. Survey was conducted in January 2011 (40 months following release of the guidelines), February 2013 and June 2018, and were formed in a way of yes/no answers. Additional multiple choice questions that focus on the implementation of guidelines were added in June 2018.

Results: A total of 128 oncologists completed a questionnaire. There was no statistically significant difference in follow up period (2011-2018) of percentage of oncologists that are familiar with Croatian guidelines for use of EPA and MA in CC, percentage of oncologists in which Croatian national guidelines changed their approach in treating patients with CC syndrome and proportion of oncologists that are using MA, enteral nutrition formulas with EPA or their combination. Most of the oncologists 38% (N = 44) are using >2.2 g of EPA per day. Nutritional support is prescribed in 25-50% of patients by 42% (N = 48) of oncologists and most of the oncologists (35%, N = 41) start with nutritional support when a body mass loss is >5%. Oncologists mostly recommend patients to use nutritional support during 1 year or more (43%, N = 49) or two months to 1 year (42%, N = 48). Compliance of patients with malignant diseases for using nutritional support was mostly evaluated as medium (69%, N = 60).

Conclusions: Results have shown that majority of oncologists who filled the questionnaire believe that the Croatian national guidelines for use of EPA and MA in CC syndrome changed their approach in treating patients with CC, but also that there are several targeted issues that can be significantly improved. The awareness of and adherence to national guidelines was maintained at high level even 11 years after the guidelines were published.