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CENG | CMB | MI > Chapter 6.3 CENG Health Level Seven International (HL7) > Flashcards

Chapter 6.3 CENG Health Level Seven International (HL7) Flashcards

1
Q

What does HL7 mean?

A

Health Level Seven International

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2
Q

What is Health Level Seven International (HL7)?

A
  • HL7 is a not-for-profit, ANSI-accredited, standards-developing organization.
  • Health Level Seven International (HL7) is both a standards organization and a standard.

(ANSI - American National Standards Institute)

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3
Q

What is the main objective of HL7?
(To provide a..?)

A

HL7 is dedicated to providing a comprehensive framework and related standards for the exchange, integration, sharing, and retrieval of electronic health information.

(Basically, it is a framework for exchanging data in healthcare)

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4
Q

What does HL7 support?

A

HL7 supports clinical practice and the management, delivery, and evaluation of health services.

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5
Q

What does “L7” in HL7 refer to?

A

The “L7” in HL7 refers to layer or level 7 of the OSI stack and relates to the healthcare applications that reside at the application layer.

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6
Q

What is so good about HL7 for a developer?

A

Why? With HL7, a developer just needs to follow the standard for message exchange and knows that the application will interface with any other application that follows the HL7 standard.

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7
Q

What are the two versions of the HL7 standard?

A

1) HL7 v2
2) HL7 v3

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8
Q

HL7 Message Structure are divided into 6 segments, what are they?

A
  1. MSH
  2. PID
  3. NK1
  4. PV1
  5. SCH
  6. OBR
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9
Q

What does MSH mean? (HL7 Message Structure)

A

Message Header

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10
Q

What does PID mean? (HL7 Message Structure)

A

Patient Identification

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11
Q

What does NK1 mean? (HL7 Message Structure)

A

Next Of Kin

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12
Q

What does PV1 mean? (HL7 Message Structure)

A

Patient Visit

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13
Q

What does SCH mean? (HL7 Message Structure)

A

Scheduling Activity Information

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14
Q

What does OBR mean? (HL7 Message Structure)

A

Observation Request

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15
Q

When did development of HL7 v2 began?

A

Development on HL7 v2 began in 1987.

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16
Q

What does the HL7 v2 design reflect?

A

Its design reflects the healthcare information concerns of the time, which were admissions, discharges, transfers, orders, and reports.

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17
Q

What is the key HL7 v2 design concepts? (6 concepts)

A
  1. Message syntax
  2. Segment structure
  3. Fields
  4. Delimiters
  5. Data types
  6. Vocabulary
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18
Q

In HL7 v2, what does each segment consist of?

A

Each segment has a three-character identifier that comes first, followed by fields, which contain components and subcomponents.

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19
Q

What are delimiters?

A

Delimiters separate these components and subcomponents.

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20
Q

What does ORM stand for and what is it?

A

ORM stands for an order message and it is an example of a message type.

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21
Q

What are examples of delimiters? (2)

A

Examples of delimiters include the field separator ( | ) and the component separator (^). Each segment has a definition table.

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22
Q

What is the patient identifier (PID) segment?

A

The patient identifier (PID) segment is a very common segment across message types.

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23
Q

In PID, what components are there?

A

It has a number of components, such as PID-5 (patient name) and PID-7 (date/time of birth). For example, a patient name would be represented as |john^doe|.

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24
Q

Another example of a segment is the AL1 segment, what is it?

A

The AL1 (allergy) segment, which contains patient allergy information, including codes for allergy type and severity.

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25
Q

What does the BLG segment contain?

A

The BLG segment contains information about billing, such as the charge type, when to charge, and the reason for the charge.

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26
Q

What is the Z segment?

A

The Z segment is a special segment that enables developers to create their own segments, thereby allowing flexibility for “local” extensions to HL7 v2.

27
Q

Segments contain fields, what is an example of a field within a segment?

A

Healthcare Provider Type Code field.

28
Q

What does the Healthcare Provider Type Code field contain?

A

It contains information to identify what type of provider cared for a patient. This field can be contained in an HL7 message within various segments, for example, the BLG segment.

29
Q

In fields, what does HL7 recommend using?

A

HL7 recommends using the Health Care Provider Taxonomy values – derived from another standard, ANSI ASC X12 – in this field.

30
Q

What is the code 207PS0010X for?

A

207PS0010X is the code for Sports Medicine; an emergency physician with special knowledge in sports medicine.

31
Q

In HL7 v2, what is data types?

A

Data types define the values, formats, and vocabulary that fields, components, and subcomponents can have.

32
Q

How are data types categorized? (2 types)

A

Data types are also categorized as simple and complex.

33
Q

What does simple data type contain?

A

Simple data types contain a single value.

34
Q

What does complex data type contain?

A

Complex data types may contain more than one, and each of those can be a different data type,

35
Q

What is an example of complex data type?

A

DT or date, its format is YYYY[MM[DD]].

36
Q

Another example of complex data type is SAD, what is it?

A

SAD, or street address, which includes the house number and street.

37
Q

When did development of HL7 v3 began?

A

Development on HL7 v3 started in 1992 with an aim to improve upon HL7 v2.

38
Q

What needs does the HL7 v3 address?
(4 things must be addressed)

A

It addressed the need for the following:

1) a consistent application data model
2) formal methodologies to model data elements and messages
3) well-defined application and user roles
4) precision in the standard

39
Q

What does the HL7 v3 combine to create HL7 v3 messages?

A

HL7 v3 combines object orientation and a Reference Information Model (RIM) to create HL7 v3 messages.

40
Q

What does RIM mean?

A

Reference Information Model

41
Q

What are the three main classes at the top of the RIM backbone?

A
  1. Act
  2. Role
  3. Entity
42
Q

What does “Act” refer to in the RIM backbone?

A

Act, which refers to something that has happened or will happen

43
Q

What does “Role” refer to in the RIM backbone?

A

Role, which is a position, job, or competency

44
Q

What does “Entity” refer to in the RIM backbone?

A

Entity, which is something that is living or non-living

45
Q

What are the HL7 message types? (6 types)

A

1) MDM
2) REF
3) ORU
4) ADT
5) VXR
6) SCH

46
Q

What does MDM mean? (HL7 Message Type)

A

Medical Document Management

47
Q

What does REF mean? (HL7 Message Type)

A

Patient Referral

48
Q

What does ORU mean? (HL7 Message Type)

A

Observation Result

49
Q

What does ADT mean? (HL7 Message Type)

A

Admission Discharge Transfer

50
Q

What does VXR mean? (HL7 Message Type)

A

Vaccination Query Record Response

51
Q

What does SCH mean? (HL7 Message Type)

A

Schedule Activity Information

52
Q

What is an example of connected healthcare?

A

Medical Device Integration (MDI) at Singapore Health Services (SingHealth)

53
Q

What does MDI mean?

A

Medical Device Integration

54
Q

What is Medical Device Integration (MDI)?

A

It is a software-based vendor-neutral solution that automatically collects and integrates patients’ vital signs data generated from various medical devices to the Electronic Medical Records (EMR) system wirelessly.

55
Q

What does EMR mean?

A

Electronic Medical Records

56
Q

What is the purpose of the MDI?
(To eliminate..?)

A

The MDI helps to eliminate healthcare staff’s time taken to manually record and input readings into the EMR by seamlessly transferring data from monitoring devices to the EMR system.

57
Q

What does MDI improve?
(Improve users’..?)

A

MDI improves users’ workflows and productivity, as well as better accuracy and timeliness of patient information in the EMR.

58
Q

How does MDI work?
(Deploys a..?)

A

The solution deploys a middleware to communicate with the EMR using HL7 messages centrally, while using many protocols to talk to the hospital devices.

59
Q

What does MDI run on?

A

It runs on standard computing platforms and supports existing computers and workstations.

60
Q

MDI ensures the 5 rights are in place, what are those 5?

A

1) right Entry
2) right Data
3) right Patient
4) right Device
5) right Time

61
Q

What is segment in the HL7 definition?

A

A logical grouping of data fields

62
Q

Which of the following is the component(s) that make up the message structure of HL7?

a) All of the options
b) Segments
c) Delimiters
d) Escape Sequences

A

a) All of the options

63
Q

There are hundreds of predefined segments as part of HL7 2 specification. Which of the following segment refers to patient identification?

A

PID

64
Q

Identify the correct statement: HL7 v2 _________________

a) is exhaustive and rigorous because it has an RIM.
b) has the majority of implementations because adoption was a design goal and the developers purposely made it flexible in order to get that adoption.
c) has the majority of implementations because vendors discounted prices greatly.
d) is no longer used.

A

b) has the majority of implementations because adoption was a design goal and the developers purposely made it flexible in order to get that adoption.

CENG | CMB | MI (25 decks)

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