How to treat mixture of ORU ?

[alberk8]

I have receive HL7 with ORU_R40 in version 2.4, as far as I know ORU_R40 is only in 2.8 Is it very common with equipment vendor? What is the proper way to treat should abnormality?.

MSH|^~\&|AX90X^^EUI-64|AX90X^^EUI-64|||20230521120740537+0800||ORU^R40^ORU_R40|43|P|2.4|98||AL|NE||UNICODE UTF-8
PID|||1235^^^^PI||SMITH^JOHN^^^^^L||20000101000000000+0800|M||||||||||||||||||||||||||||||||ADU
PV1|||^^^||||||||||||||||||||||||||||||||||||||||20230303000000000+0800|||||||||||
OBR|1||43^AX90X^^EUI-64|196616^MDC_EVT_ALARM^MDC|||20230521120740537+0800||||||||||||||||||||||^43
OBX|1|CWE|196616^MDC_EVT_ALARM^MDC|1.7.0.196682.1|196680^MDC_EVT_LEADS_OFF^MDC||||||F|||20230521120740537+0800
OBX|2|CWE|68480^MDC_ATTR_ALERT_SOURCE^MDC|1.7.0.196682.2|69953^MDC_DEV_MON_PT_PHYSIO_MULTI_PARAM_MDS^MDC||||||F
OBX|3|ST|68481^MDC_ATTR_EVENT_PHASE^MDC|1.7.0.196682.3|start||||||F
OBX|4|ST|68482^MDC_ATTR_ALARM_STATE^MDC|1.7.0.196682.4|active||||||F
OBX|5|ST|68483^MDC_ATTR_ALARM_INACTIVATION_STATE^MDC|1.7.0.196682.5|^^||||||F
OBX|6|ST|68484^MDC_ATTR_ALARM_PRIORITY^MDC|1.7.0.196682.6|PL||||||F
OBX|7|ST|68485^MDC_ATTR_ALERT_TYPE^MDC|1.7.0.196682.7|ST||||||F
OBX|8|ST|68486^MDC_ATTR_ALERT_THRESHOLD^MDC|1.7.0.196682.8|||||||F

[milkshakeuk]

How are you looking to handle it, what is your desired outcome?

[alberk8]

I am not sure how. Can you mix and match different nuget version? I see there is a mapping for ORU_R40 in 2.8 but no class for ORU_R40.

What I want to achieve is be able to cast the IMessage to a ORU_R40.

[milkshakeuk]

You can still parse this message even though it is nonstandard, here is some sample code and the dotnet fiddle showing it in action.

using System;
using System.Linq;
using NHapi.Base.Parser;
using NHapi.Base.Util;
using NHapi.Model.V24.Segment;

var newLine = '\r';
var message = $"""
	MSH|^~\&|AX90X^^EUI-64|AX90X^^EUI-64|||20230521120740537+0800||ORU^R40^ORU_R40|43|P|2.4|98||AL|NE||UNICODE UTF-8{newLine}
	PID|||1235^^^^PI||SMITH^JOHN^^^^^L||20000101000000000+0800|M||||||||||||||||||||||||||||||||ADU{newLine}
	PV1|||^^^||||||||||||||||||||||||||||||||||||||||20230303000000000+0800|||||||||||{newLine}
	OBR|1||43^AX90X^^EUI-64|196616^MDC_EVT_ALARM^MDC|||20230521120740537+0800||||||||||||||||||||||^43{newLine}
	OBX|1|CWE|196616^MDC_EVT_ALARM^MDC|1.7.0.196682.1|196680^MDC_EVT_LEADS_OFF^MDC||||||F|||20230521120740537+0800{newLine}
	OBX|2|CWE|68480^MDC_ATTR_ALERT_SOURCE^MDC|1.7.0.196682.2|69953^MDC_DEV_MON_PT_PHYSIO_MULTI_PARAM_MDS^MDC||||||F{newLine}
	OBX|3|ST|68481^MDC_ATTR_EVENT_PHASE^MDC|1.7.0.196682.3|start||||||F{newLine}
	OBX|4|ST|68482^MDC_ATTR_ALARM_STATE^MDC|1.7.0.196682.4|active||||||F{newLine}
	OBX|5|ST|68483^MDC_ATTR_ALARM_INACTIVATION_STATE^MDC|1.7.0.196682.5|^^||||||F{newLine}
	OBX|6|ST|68484^MDC_ATTR_ALARM_PRIORITY^MDC|1.7.0.196682.6|PL||||||F{newLine}
	OBX|7|ST|68485^MDC_ATTR_ALERT_TYPE^MDC|1.7.0.196682.7|ST||||||F{newLine}
	OBX|8|ST|68486^MDC_ATTR_ALERT_THRESHOLD^MDC|1.7.0.196682.8|||||||F
	""";

// if message is nonstandard, it will be parsed as a GenericMessage
var pipeParser = new PipeParser();
var parsed = pipeParser.Parse(message);

// You can either use the Terser to retrieve valus
var terser = new Terser(parsed);

Console.WriteLine($"############USING TERSER############{Environment.NewLine}");
Console.WriteLine($"PID.3.1 [Patient Identifier List - ID]: {terser.Get("/PID-3-1")}");
Console.WriteLine($"PID.3.5 [Patient Identifier List - Identifier Type Code]: {terser.Get("/PID-3-5")}");
Console.WriteLine($"PID.5.1.1 [Patient Name - Family Name - Surname]: {terser.Get("/PID-5-1-1")}");
Console.WriteLine($"PID.5.2 [Patient Name - Given Name]: {terser.Get("/PID-5-2")}");
Console.WriteLine($"OBX(1).3.2 [Observation Identifier - Text]: {terser.Get("/OBX(0)-3-2")}");
Console.WriteLine($"OBX(2).3.2 [Observation Identifier - Text]: {terser.Get("/OBX(1)-3-2")}");
Console.WriteLine($"OBX(3).3.2 [Observation Identifier - Text]: {terser.Get("/OBX(2)-3-2")}");

// or access via Parsed Segments from Generic Message which will give you strongly typed values
var pid = ((PID)parsed.GetAll("PID")[0]);
var patientIdentifierList = pid.GetPatientIdentifierList(0);
var patientName = pid.GetPatientName(0);

Console.WriteLine($"{Environment.NewLine}############USING GENERIC MESSAGE############{Environment.NewLine}");
Console.WriteLine($"PID.3.1 [Patient Identifier List - ID]: {patientIdentifierList.ID}");
Console.WriteLine($"PID.3.5 [Patient Identifier List - Identifier Type Code]: {patientIdentifierList.IdentifierTypeCode}");
Console.WriteLine($"PID.5.1 [Patient Name - Family Name - Surname]: {patientName.FamilyName.Surname}");
Console.WriteLine($"PID.5.2 [Patient Name - Given Name]: {patientName.GivenName}");

var obxs = parsed.GetAll("OBX").Cast<OBX>().ToList();
Console.WriteLine($"OBX(1).3.2 [Observation Identifier - Text]: {obxs[0].ObservationIdentifier.Text}");
Console.WriteLine($"OBX(2).3.2 [Observation Identifier - Text]: {obxs[1].ObservationIdentifier.Text}");
Console.WriteLine($"OBX(3).3.2 [Observation Identifier - Text]: {obxs[2].ObservationIdentifier.Text}");

Or you want to use a strongly typed ORU_R40 you can always add your own nonstandard custom object model.

[alberk8]

Thank you for the example. Is there a example of writing a custom object model that I can reference?. Thank you.

[milkshakeuk]

There is this tutorial online, it's a little old but is still valid, if your using dotnet core or net5 and above you will have to add an app.config to your project, here is a stack overflow post explaining how you can do it.

Here how it's done in one of nhapi's tests project.

https://github.com/nHapiNET/nHapi/blob/master/tests/NHapi.NUnit/NHapi.NUnit.csproj#L72

For dotnet framework applications App config or Web.config is the norm so you don't need to do anything special.