Patient Safety in Palliative and End-of-Life Care: A Text Mining Approach and Systematic Review of Definitions.

Abstract

Patient safety has gained an increasing profile as a crucial element of healthcare. However, not only is there little evidence on the relevance of the term in the palliative and end-of-life care literature but also a lack of a precise and uniform definition. With a text mining approach occurrence of the term patient safety was determined in all available abstracts of 10 palliative and end-of-life care journals. Furthermore, 4 electronic databases (MEDLINE, EMBASE, CINAHL and PSYCINFO) were searched supplemented by hand-searching of relevant literature to identify and conceptualize published definitions of patient safety in the palliative and end-of-life care context. Publications were independently assessed against inclusion criteria by 2 authors. Our search of 14,351 abstracts yielded 41 hits for "patient safety" ranking 2,345 in the list of most commonly encountered tokens. We identified 11 definitions of patient safety stemming from 11 publications. Definitions differed with regard to the concept of process or outcome. They also allowed distinctive perspectives on the extent to which patient care influences patient safety. Lastly, exact wording led to discrepancies in the understanding of unsafe care and generalizability of definitions. Our results indicate that patient safety has gradually gained importance in palliative and end-of-life care. However, as key elements of definientia varied considerably no consensus definition could be identified. Nevertheless, a universal definition would help to facilitate communication and exchange of information among individuals and organizations involved in palliative and end-of-life care.