Background: As the number of non-native patients in Japan is increasing, emergency departments must provide proper care for international patients. However, no research has been conducted to determine the demographics of international patients that visit Japanese hospitals or the requirements to accept them. We aimed to organize the existing research and its patterns for foreign patients in Japan's emergency departments and to identify the areas that require further research.
Methods: Systematic review of research articles indexed in MEDLINE and Ichushi-web (Japanese medical literature) was conducted. The search strategy was based on a previous study in Japanese, and the search was limited to manuscripts published from 2015.
Results: Nine publications that reported on the demographic characteristics of foreign patients who visited the emergency department were among the study's 13 references. Injury diagnoses and the Asian population were both common. Dealing with overseas patients can be challenging due to linguistic barriers, cultural differences, and payment issues. However, studies describing the spoken language and the type of healthcare insurance used were lacking. Furthermore, neither the definition of "foreign patients" nor the distinction between short-term visitors and long-term residents were made in the majority of the research.
Conclusions: The demographic characteristics of patients differed depending on the location and facility, despite the fact that several characteristics of foreign patients in emergency departments appeared to be generalizable. The COVID-19 pandemic may modify the demographic characteristics of immigrants; thus, more research from a broad range of locations and medical facilities is still necessary.
Keywords: foreigners; global health; migrant health; minority health; non-national patients.
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