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Methods Inf Med 2021; 60(03/04): 095-103
DOI: 10.1055/s-0041-1733945
Original Article

The Pipeline for Standardizing Russian Unstructured Allergy Anamnesis Using FHIR AllergyIntolerance Resource

Iuliia D. Lenivtceva
1   National Center for Cognitive Research, ITMO University, Saint-Petersburg, Russia
,
Georgy Kopanitsa
1   National Center for Cognitive Research, ITMO University, Saint-Petersburg, Russia
› Author Affiliations Funding This work is financially supported by National Center for Cognitive Research of ITMO University. This work was financially supported by the Government of the Russian Federation through the ITMO fellowship and professorship program.
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Abstract

Background The larger part of essential medical knowledge is stored as free text which is complicated to process. Standardization of medical narratives is an important task for data exchange, integration, and semantic interoperability.

Objectives The article aims to develop the end-to-end pipeline for structuring Russian free-text allergy anamnesis using international standards.

Methods The pipeline for free-text data standardization is based on FHIR (Fast Healthcare Interoperability Resources) and SNOMED CT (Systematized Nomenclature of Medicine Clinical Terms) to ensure semantic interoperability. The pipeline solves common tasks such as data preprocessing, classification, categorization, entities extraction, and semantic codes assignment. Machine learning methods, rule-based, and dictionary-based approaches were used to compose the pipeline. The pipeline was evaluated on 166 randomly chosen medical records.

Results AllergyIntolerance resource was used to represent allergy anamnesis. The module for data preprocessing included the dictionary with over 90,000 words, including specific medication terms, and more than 20 regular expressions for errors correction, classification, and categorization modules resulted in four dictionaries with allergy terms (total 2,675 terms), which were mapped to SNOMED CT concepts. F-scores for different steps are: 0.945 for filtering, 0.90 to 0.96 for allergy categorization, 0.90 and 0.93 for allergens reactions extraction, respectively. The allergy terminology coverage is more than 95%.

Conclusion The proposed pipeline is a step to ensure semantic interoperability of Russian free-text medical records and could be effective in standardization systems for further data exchange and integration.

Keywords

data standardization - terminology coverage - free-text medical record - machine learning - semantic interoperability

Supplementary Material



Publication History

Received: 24 March 2021

Accepted: 26 June 2021

Article published online:
23 August 2021

© 2021. Thieme. All rights reserved.

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 

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