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Wireless communication between sensors monitoring patient vital signs has become more and more important in the past few years. Essential requirements to integrate sensors of different manufacturers into a clinical network are standardized communication protocols and a unique data representation of the vital signs. Both issues are realized by CEN ENV 13734/35 ldquoVital Signs Information Representationrdquo (VITAL) . The standard was implemented and integrated into a generic framework with different interfaces allowing integration of extensions . In order to guarantee readability of vital signs communicated with the VITAL framework in the future, standardized storing methods are indispensable. That is why a new user interface was created that allows standardized persistence of medical data information in real time. Focussing on our implementation, we evaluated three relevant file formats: the ldquoEuropean Data Formatrdquo (EDF/EDF+), the ldquoFile Exchange Formatrdquo (FEF) and SCIPHOX.