BackgroundHands-on training in point-of-care ultrasound (POC-US) should ideally comprise bedside teaching, as well as simulated clinical scenarios. High-fidelity phantoms and portable ultrasound simulation systems are commercially available, however, at considerable costs. This limits their suitability for medical schools. A Linux-based software for Emergency Department Ultrasound Simulation (edus2TM) was developed by Kulyk and Olszynski in 2011. Its feasibility for POC-US education has been well-documented, and shows good acceptance. An important limitation to an even more widespread use of edus2, however, may be due to the need for a virtual machine for WINDOWS® systems. Our aim was to adapt the original software toward an HTML-based solution, thus making it affordable and applicable in any simulation setting.MethodsWe created an HTML browser-based ultrasound simulation application, which reads the input of different sensors, triggering an ultrasound video to be displayed on a respective device. RFID tags, NFC tags, and QR Codes™ have been integrated into training phantoms or were attached to standardized patients. The RFID antenna was hidden in a mock ultrasound probe. The application is independent from the respective device.ResultsOur application was used successfully with different trigger/scanner combinations and mounted readily into simulated training scenarios. The application runs independently from operating systems or electronic devices.ConclusionThis low-cost, browser-based ultrasound simulator is easy-to-build, very adaptive, and independent from operating systems. It has the potential to facilitate POC-US training throughout the world, especially in resource-limited areas.Electronic supplementary materialThe online version of this article (doi:10.1186/s13089-017-0061-4) contains supplementary material, which is available to authorized users.

The BOne Health^initiative promises to combine different health-related issues concerning humans and animals in an overarching concept and in related practices to the benefit of both humans and animals. Far from dismissing One Health, this paper nevertheless argues that different veterinary interventions are determined by social practices and connected expectations and are, thus, hardly compliant with only one single conceptualization of health, as the One Health concept suggests. One Health relies on a naturalistic understanding of health focusing on similar bodies that show a similar etiology. However, logics, normativity, and practices exhibit differences when it comes to combatting infectious diseases, maintaining productivity of livestock animals or preventing companion animals from suffering. Therefore, drawing from Charles Rosenberg's groundbreaking texts on framing disease, we suggest to conceive of health as dispersed in different frames. Thus, this paper proposes to interpret health as complex and multi-layered concept. We distinguish and introduce an objectivist, a functional, and a sentientistic frame of health. Instead of reducing the differential veterinary practices to one paradigmatic understanding, health is seen as a model case of Wittgenstein's concept of family resemblance. Different and distinct perspectives on veterinary medicine show sufficient overlapping that allows for a common conceptualization, but there is not one single underlying logic suitable to understand and ethically reflect all veterinary interventions. This differentiability promises to reduce moral stress in veterinary professionals since it allows the interpretation of various, seemingly contradicting practices as dependent on multi-layered and socially determined scopes of responsibility.

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