The Medical Entities Dictionary

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The Medical Entities Dictionary

• Columbia University
• Department of Biomedical Informatics

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The Medical Entities Dictionary
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Retrieving Results Individually
K1 4.2
K1 3.3
K2 3.2
K1 3.0
K1
K2
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Retrieving Results by Class
K1
K2
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What is in the MED?

• Sunquest lab terms
• Cerner lab terms
• Digimedix drugs
• Cerner Drugs
• Sunquest Radiology
• ICD9-based problem list terms
• Other applications
• Knowledge terms

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How Big is the MED?

• Concept-based (77,500)
• Multiple hierarchy (115,000)
• Synonyms (180,000)
• Translations (125,000)
• Semantic links (270,000)
• Attributes (175,000)

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MED Structure
Medical Entity
Plasma Glucose Test
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Using the MED

• Translation
• What is the ICD9 Code for ?
• What is the display name for ?
• What is the aggregation class for ?
• Translation Tables
• Class-based questions
• Is Altace an antihypertensive?
• What are all the antibiotics?
• Knowledge queries
• What are the pharmaceutic ingredients of?

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Using the MED
MED
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The MED and Messaging
Ancillary System
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Case Study Aggregation for C2000

• Labs have multiple codes for the same tests
• C2000 displays tests in spreadsheets (buttons)
• One code per column per button
• Unrecognized codes go into Miscellaneous
• Labs are always adding new tests and not telling
• How do we keep the C2000 buttons current?

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C2000 Buttons in the MED
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The Lytes Button
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Intravascular Sodium Tests
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C2000 Buttons in the MED
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Querying for Button Parts
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Querying for Button Parts
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Operationalizing C2000 Aggregation

• Translation from lab code to MED code is done by
  interface engine
• Aggregation from MED code to C2000 button column
  (Intravascular ) is done by interface engine
• New lab tests that fall into existing columns are
  automatically aggregated
• New lab tests that dont fall into existing
  columns can be identified before ending up in
  Miscellaneous

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Translations with the MED
Injectable Gentamicin
Serum Gentamicin Level
Gentamicin
Gentamicn Sensitivity Test
Gentamicin Toxicity
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The MED and Eclipsys

• Capturing data from ancillary systems
• Aggregation for summary reporting
• Keeping terminologies up to date (e.g., for order
  entry)
• Class-based decision rules
• Multiple hierarchies allowed
• Linking to on-line resources