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IHE Patient Care Device Technical Framework Supplement – Alarm CommunicationManagement (ACM)______________________________________________________________________________IntroductionProfile Abstract205210This supplement extends the Device Enterprise Communication profile of the IHE Patient CareDevices domain to further specify the communication of alarm data describing states and eventssignificant to patient care from patient care devices to alarm manager systems (systems whichroute alarms to end devices for notification of caregivers or for alarm logging purposes).These alarms may be physiological, that is, representing the physiological state of the patient(such as a heart rate above or below a caregiver-specified safe range for the patient), or technical,reflecting conditions in the patient care devices themselves that may require action fromcaregivers (such as ECG leads off the patient).The intent of this supplement is to give a uniform way of representing such common alarmconditions in HL7 messages to facilitate interoperability of systems from different vendors.Open Issues and Questions215None.Closed Issues220225230It was decided to treat alarm representation in HL7 as an extension of previous PCD work forobservation reporting from patient care devices, with multiple OBX segments representing theaspects of an alarm that did went beyond what could readily be represented in the single OBXsegment per parameter model previously used.ISO/IEEE 11073 was selected as the preferred coding system for parameters and events to beused in the communication of alarms. If no applicable term is available in that nomenclature anda LOINC term is, the LOINC term may be used.Aside from that which is directly affected by this profile, communication and functionalitywithin alarm manager systems and the communication protocols, messaging, and presentationused between alarm manager systems and alarm dissemination and alarm endpoint client systemsis not within the scope of this profile.Systems covered by this document shall pass through rather than modify alarms created bypatient care devices, and shall not create additional alarms based on interpreting alarms or basedon correlating alarms from different alarm reporting systems.There was consensus that snippets from ECG or other physiological waveforms associated withalarms were desirable to provide for in this document, but it was decided to define that in aseparate format specification, Waveform Content Module (WCM). Inclusion of WaveformContent Module (WCM) components in ACM Report Alarm [PCD-04] messages is the direction__________________________________________________________________________6Rev. 1.3– 2012-08-16Copyright © 2012: IHE International, Inc.
IHE Patient Care Device Technical Framework Supplement – Alarm CommunicationManagement (ACM)______________________________________________________________________________235going forward, once sufficient vendors have produced WCM conformant implementations forthe ACM AR, AM, and AC actors.__________________________________________________________________________7Rev. 1.3– 2012-08-16Copyright © 2012: IHE International, Inc.
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