HL7 Terminology (THO)
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This page is part of the HL7 Terminology (v5.4.0: Release) based on FHIR R4. This is the current published version. For a full list of available versions, see the Directory of published versions

: ActControlVariable - XML Representation

Active as of 2014-03-26

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<ValueSet xmlns="http://hl7.org/fhir">
  <id value="v3-ActControlVariable"/>
  <language value="en"/>
  <text>
    <status value="extensions"/>
    <div xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><p>This value set includes codes based on the following rules:</p><ul><li>Include codes from <a href="CodeSystem-v3-ActCode.html"><code>http://terminology.hl7.org/CodeSystem/v3-ActCode</code></a> where concept  is-a  <a href="CodeSystem-v3-ActCode.html#v3-ActCode-_ActControlVariable">_ActControlVariable</a></li></ul><p>This value set excludes codes based on the following rules:</p><ul><li>Exclude these codes as defined in <a href="CodeSystem-v3-ActCode.html"><code>http://terminology.hl7.org/CodeSystem/v3-ActCode</code></a><table class="none"><tr><td style="white-space:nowrap"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td><a href="CodeSystem-v3-ActCode.html#v3-ActCode-_ActControlVariable">_ActControlVariable</a></td><td style="color: #cccccc">ActControlVariable</td><td>An observation form that determines parameters or attributes of an Act. Examples are the settings of a ventilator machine as parameters of a ventilator treatment act; the controls on dillution factors of a chemical analyzer as a parameter of a laboratory observation act; the settings of a physiologic measurement assembly (e.g., time skew) or the position of the body while measuring blood pressure.<br/><br/>Control variables are forms of observations because just as with clinical observations, the Observation.code determines the parameter and the Observation.value assigns the value. While control variables sometimes can be observed (by noting the control settings or an actually measured feedback loop) they are not primary observations, in the sense that a control variable without a primary act is of no use (e.g., it makes no sense to record a blood pressure position without recording a blood pressure, whereas it does make sense to record a systolic blood pressure without a diastolic blood pressure).</td></tr></table></li></ul></div>
  </text>
  <url value="http://terminology.hl7.org/ValueSet/v3-ActControlVariable"/>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.1.11.16857"/>
  </identifier>
  <version value="3.0.0"/>
  <name value="ActControlVariable"/>
  <title value="ActControlVariable"/>
  <status value="active"/>
  <experimental value="false"/>
  <date value="2014-03-26"/>
  <publisher value="Health Level Seven International"/>
  <contact>
    <telecom>
      <system value="url"/>
      <value value="http://hl7.org"/>
    </telecom>
    <telecom>
      <system value="email"/>
      <value value="hq@HL7.org"/>
    </telecom>
  </contact>
  <description
               value="An observation form that determines parameters or attributes of an Act. Examples are the settings of a ventilator machine as parameters of a ventilator treatment act; the controls on dillution factors of a chemical analyzer as a parameter of a laboratory observation act; the settings of a physiologic measurement assembly (e.g., time skew) or the position of the body while measuring blood pressure.

Control variables are forms of observations because just as with clinical observations, the Observation.code determines the parameter and the Observation.value assigns the value. While control variables sometimes can be observed (by noting the control settings or an actually measured feedback loop) they are not primary observations, in the sense that a control variable without a primary act is of no use (e.g., it makes no sense to record a blood pressure position without recording a blood pressure, whereas it does make sense to record a systolic blood pressure without a diastolic blood pressure)."/>
  <copyright
             value="This material derives from the HL7 Terminology THO. THO is copyright ©1989+ Health Level Seven International and is made available under the CC0 designation. For more licensing information see: https://terminology.hl7.org/license"/>
  <compose>
    <include>
      <system value="http://terminology.hl7.org/CodeSystem/v3-ActCode"/>
      <filter>
        <property value="concept"/>
        <op value="is-a"/>
        <value value="_ActControlVariable"/>
      </filter>
    </include>
    <exclude>
      <system value="http://terminology.hl7.org/CodeSystem/v3-ActCode"/>
      <concept>
        <code value="_ActControlVariable"/>
      </concept>
    </exclude>
  </compose>
</ValueSet>