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20 WACS outbound HL7 protocols Welch Allyn Connectivity Server

HL7 attributes of OBX (observation/result) segments

OBX segment example

OBX|1|ST|Heart Rate^Heart Rate^WAP||80|^BPM||||||||20090127093400.000-0800

Table 10. HL7 attributes – OBX – observation/result segment

SEQ LEN DT OPT RP/# TBL# ITEM# Element name WACS

requirement

1 4 SI O 00569 Set ID - OBX R

2 2 ID C 0125 00570 Value Type R

3 250 CE R 00571 Observation Identifier R

4 20 ST C 00572 Observation Sub-ID C

5 65536

a. The length of the observation field is variable, depending upon value type. See OBX-2 value type.

*CY

b. May repeat for multipart, single answer results with appropriate data types, e.g., CE, TX, and FT data types.

00573 Observation Value R

6 250 CE O 00574 Units R

7 60 ST O 00575 References Range C

8 5 IS O Y/5 0078 00576 Abnormal Flags C

9 5 NM O 00577 Probability I

10 2 ID O Y 0080 00578 Nature of Abnormal Test N

11 1 ID R 0085 00579 Observation Result Status N

12 26 TS O 00580 Date Last Observation Normal

Value

13 20 ST O 00581 User Defined Access Checks N

14 26 TS O 00582 Date/Time of the Observation R

15 250 CE O 00583 Producer's ID N

16 250 XCN O Y 00584 Responsible Observer N

17 250 CE O Y 00936 Observation Method N

18 22 EI O Y 01479 Equipment Instance Identifier N

19 26 TS O 01480 Date/Time of the Analysis N

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 63 64

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