HL7段序

Question

我使用以下片段顺序解析SIU S14：MSH SCH PID PV1 RGS AIL AIS

虽然它分析没有错误，但我无法从AIS段中检索数据。但是当我在艾尔之前移动AIS片段时，一切似乎都很好。那么，分段排序在HL7中重要吗？

Answer 1

HL7消息中段的顺序由消息类型预先确定。在计划信息未经请求的消息中，AIS段必须领先于AIL。

SIU^S12-S24,S26,S27^SIU_S12: Schedule Information Unsolicited

  MSH   Message Header  
  SCH   Schedule Activity Information       
    [ { TQ1 } ] Timing/Quantity     
    [ { NTE } ] Notes and Comments for the SCH  
  [ {   --- PATIENT begin       
      PID   Patient Identification  
      [ PD1 ]   Additional Demographics     
      [ PV1 ]   Patient Visit       
      [ PV2 ]   Patient Visit - Additional Info     
      [ { OBX } ]   Observation/Result      
      [ { DG1 } ]   Diagnosis       
  } ]   --- PATIENT end     
  {     --- RESOURCES begin     
    RGS      Resource Group Segment     
    [ { --- SERVICE begin       
        AIS     Appointment Information - Service       
        [ { NTE } ] Notes and Comments for the AIS      
    } ] --- SERVICE end     
    [ { --- GENERAL_RESOURCE begin      
        AIG      Appointment Information - General Resource     
        [ { NTE } ] Notes and Comments for the AIG      
    } ] --- GENERAL_RESOURCE end        
    [ { --- LOCATION_RESOURCE begin     
        AIL      Appointment Information - Location Resource        
        [ { NTE } ] Notes and Comments for the AIL      
    } ] --- LOCATION_RESOURCE end       
    [ { --- PERSONNEL_RESOURCE begin        
        AIP   Appointment Information - Personnel Resource      
        [ { NTE } ] Notes and Comments for the AIP      
    } ] --- PERSONNEL_RESOURCE end      
  } --- RESOURCES end       

但这两个片段，它们的片段组都是可选的。因此，只有一个AIL而没有AIS段的消息在语法上是可以的。而且，由于HL7消息是打开的，在完整的message.In命令之后允许有额外的或本地定义的段来检索这些额外的数据，您需要一个经过调整的模板。