IEEE J Biomed Health Inform - Designing Robust and Reliable Timestamps for Remote Patient Monitoring.

Tópicos

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Resumo

Having timestamps that are robust and reliable is essential for remote patient monitoring in order for patient data to have context and to be correlated with other data. However, unlike hospital systems for which guidelines on timestamps are currently provided by HL7 and IHE, remote patient monitoring platforms are: operated in environments where it can be difficult to synchronize with reliable time sources; include devices with simple or no clock; and may store data spanning significant periods before able to upload. Existing guidelines prove inadequate. This paper analyzes the requirements and the operating scenarios of remote patient monitoring platforms and defines a framework to convey information on the conditions under which observations were made by the device and forwarded by the gateway in order for data to be managed appropriately and to include both reference to local time and an underlying continuous reference timeline. We define the timestamp formats of HL7 to denote the different conditions of operation and describe extensions to the existing definition of the HL7 timestamp to differentiate between time local to GMT (+0000) and universal coordinated time or network time protocol time where no geographic time zone is implied (-0000). We further describe how timestamps from devices having only simple or no clocks might be managed reliably by a gateway to provide timestamps that are referenced to local time and an underlying continuous reference timeline. We extend the HL7 message to include information to permit a subsequent receiver of the data to understand the quality of the timestamp and how it has been translated. We present evaluation from deploying a platform for 12 months.

Resumo Limpo

timestamp robust reliabl essenti remot patient monitor order patient data context correl data howev unlik hospit system guidelin timestamp current provid hl ihe remot patient monitor platform oper environ can difficult synchron reliabl time sourc includ devic simpl clock may store data span signific period abl upload exist guidelin prove inadequ paper analyz requir oper scenario remot patient monitor platform defin framework convey inform condit observ made devic forward gateway order data manag appropri includ refer local time under continu refer timelin defin timestamp format hl denot differ condit oper describ extens exist definit hl timestamp differenti time local gmt univers coordin time network time protocol time geograph time zone impli describ timestamp devic simpl clock might manag reliabl gateway provid timestamp referenc local time under continu refer timelin extend hl messag includ inform permit subsequ receiv data understand qualiti timestamp translat present evalu deploy platform month

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