Robert A Jenders’s research while affiliated with University of California and other places

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Publications (65)


Integrated Perspectives on Clinical Decision Support: A Comparative Analysis of Knowledge Management Approaches
  • Article

August 2024

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4 Reads

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Robert A Jenders

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We analyze five approaches to knowledge management in clinical decision support (CDS) systems: pattern recognition based on annotated imaging data, mining of stored structured medical data, text mining of published texts, computable knowledge design, and general or specific text corpora for large language models. Each method’s strengths and limitations in automating clinical knowledge management while striving for a zero-error policy are evaluated, offering insights into their roles in enhancing healthcare through intelligent decision support. The study aims to inform decisions in the development of effective, transparent CDS systems in clinical and patient care settings.


Evaluation of the Proposed Arden Syntax v3.0 to Represent Query Data Mappings Using FHIR
  • Article
  • Full-text available

January 2024

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26 Reads

Context: Arden Syntax is a standard that encodes knowledge as Medical Logic Modules but lacks a standard query data model and terminology. Objective: Assess FHIR-enabled data access in a proposed version of Arden Syntax. Method: Queries in 340 MLMs were tabulated. Result: FHIR can serve as the Arden Syntax data model, but nonstandard terminologies still impede interoperability. Conclusion: The proposed Arden Syntax v3.0 FHIR-enabled data access is adequate as a query data model for MLMs.

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Arden Syntax on FHIR

June 2023

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308 Reads

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Arden Syntax, a medical knowledge representation and processing language for clinical decision support tasks supervised by Health Level Seven International (HL7), was extended with HL7's Fast Healthcare Interoperability Resources (FHIR) constructs to allow standardized data access. The new version, Arden Syntax version 3.0, was successfully balloted as part of the audited, consensus-based, iterative HL7 standards development process.



Exploration of the Decision Model and Notation (DMN) Standard for Representation of Knowledge Bases Encoded in the Arden Syntax

June 2022

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21 Reads

Context: Arden Syntax encodes knowledge as Medical Logic Modules (MLMs). Current work involves improvement of its representation of business processes. Objective: Assess how DMN can represent decision-making in MLMs. Method: A sample of 340 MLMs was tabulated for DMN representation. Result: While DMN can represent all MLMs at the decision requirements level, some are not supported at the decision logic level. Conclusion: DMN facilitates representation of business processes but would not address all decision logic.


Contemporary clinical decision support standards using Health Level Seven International Fast Healthcare Interoperability Resources

June 2021

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23 Reads

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45 Citations

Journal of the American Medical Informatics Association

Objective To facilitate the development of standards-based clinical decision support (CDS) systems, we review the current set of CDS standards that are based on Health Level Seven International Fast Healthcare Interoperability Resources (FHIR). Widespread adoption of these standards may help reduce healthcare variability, improve healthcare quality, and improve patient safety. Target Audience This tutorial is designed for the broad informatics community, some of whom may be unfamiliar with the current, FHIR-based CDS standards. Scope This tutorial covers the following standards: Arden Syntax (using FHIR as the data model), Clinical Quality Language, FHIR Clinical Reasoning, SMART on FHIR, and CDS Hooks. Detailed descriptions and selected examples are provided.


Fig. 4 Example of Clinical Quality Language (CQL) using a data model and Arden using object.
Fig. 5 Example of referencing function from another Clinical Quality Language (CQL) library (source: https://cql.hl7.org/02-authorsguide. html), and a data slot in Arden demonstrating the read of data from a Fast Healthcare Interoperability Resources (FHIR) service and a database.
Fig. 6 Example of Clinical Quality Language (CQL) codesystem, valueset, and code constructs used to reference terminologies.
Comparison between Arden and CQL regarding language characteristics and constructs
Arden and CQL implications on utility

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A Comparison of Arden Syntax and Clinical Quality Language as Knowledge Representation Formalisms for Clinical Decision Support

May 2021

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645 Reads

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10 Citations

Applied Clinical Informatics

Objectives: This article presents a comparative study of two Health Level Seven International (HL7) standards for clinical knowledge representation, the Arden Syntax and the Clinical Quality Language (CQL), regarding their expressiveness and utility to represent knowledge for clinical decision support (CDS) systems. Methods: We compiled a concatenated set of features from both languages and made descriptive comparisons of 27 categories covering areas of language characteristics, data, control statements, and operators. Results: Both Arden and CQL have similar constructs that can be used for representing CDS knowledge but also have unique constructs that could support distinct use cases. They have constructs that fully or partially address several of the categories used in the comparison, except for data models and terminologies in Arden and event triggering and iteration statements in CQL. Conclusion: These standards can facilitate the sharing, management, and reuse of computable knowledge, and permit knowledge to be represented with their languages and converted to a machine-friendly executable code that can be shared and reused by other systems. Having support for standard data models and terminologies will continue to be a differential for adoption of a language. The HL7 working groups responsible for developing these standards can direct future development to enhance the functions of the standard and address the gaps identified in this study.


Evaluation of the Fast Healthcare Interoperability Resources (FHIR) Standard for Representation of Knowledge Bases Encoded in the Arden Syntax

August 2019

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11 Reads

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4 Citations

Context: Arden Syntax is a standard that encodes knowledge as Medical Logic Modules (MLMs) but lacks a standard query data model and terminology. Objective: Assess to what extent FHIR can represent MLMs. Method: A convenience sample of 340 MLMs were examined and tabulated for representation using the PlanDefinition resource. Result: While alignment between structured subsections is uneven, the PlanDefinition resource adequately represents procedural medical knowledge encoded as MLMs. Conclusion: FHIR adequately represents Arden Syntax MLMs.




Citations (47)


... Earlier efforts have focused on parsing clinical trial EC into formats that computers can interpret to support trial protocol design 17 , automated cohort selection, and collaborative clinical research [18][19][20][21][22][23][24] . Computer languages such as Arden Syntax 25 , Clinical Quality Language (CQL) 26 , Guideline Expression Language Object-Oriented (GELLO) 27 have standardized medical knowledge and clinical decision-support logic but they require substantial domain expertise and customization to implement effectively. Tools like Eligibility Criteria Language for Clinical Trials Inclusion Criteria (ECLECTIC) 28 , and Clinical Trail Markup Language (CTML) 29 provide standardized formats for encoding eligibility criteria, excelling in consistency and interoperability across EHR systems but they lack the flexibility needed for complex and nuanced tasks. ...

Reference:

CriteriaMapper: establishing the automatic identification of clinical trial cohorts from electronic health records by matching normalized eligibility criteria and patient clinical characteristics
A Comparison of Arden Syntax and Clinical Quality Language as Knowledge Representation Formalisms for Clinical Decision Support

Applied Clinical Informatics

... [26][27][28] With respect to interoperability, HL7 Fast Healthcare Interoperability Resources (FHIR) specifications are available to support standardized data exchange between computer systems. 29,30 These specifications may help address challenges related to incorporating external PGx results as structured data in the EHR. In addition, some organizations have moved to state-or region-wide health information exchange systems to promote more seamless data transfer between institutions. ...

Contemporary clinical decision support standards using Health Level Seven International Fast Healthcare Interoperability Resources
  • Citing Article
  • June 2021

Journal of the American Medical Informatics Association

... A pragmatic guide to establishing CDS governance For the proposed CDS tool, we adhered to the core principles of "five rights": the right information to the right person in the right intervention format through the right channel at the right time in the clinical workflow (Campbell, 2013). Specifically, we ensured the delivery of appropriate content (such as OASIS, vital signs, and clinical notes) to the correct stakeholders (patients and clinicians) at the most opportune times (during actual visits or before specific events), through the right channels (such as the EHR's messaging portal), and in an accessible format (message data presentation) (Osheroff et al., 2012). The system architecture illustrated how the CDS logic will trigger in three stages. ...

Improving Outcomes with Clinical Decision Support
  • Citing Book
  • February 2012

... Despite the fact that many of the aforementioned languages and models are no more in the spotlight, others obtained remarkable visibility: the Arden Syntax [2], one of the oldest, was born in the 1990s and integrated in HL7 and ANSI in, respectively, 1999 and 2014. It is still on the open scene, with structural changes being proposed: for example, to include user-defined functions within the Medical Logic Module (MLMs) [73], to embed expressions into strings [74] (published in 2018 and 2019 respectively), or to harmonize it in the ecosystem of more recent and promising standards [75]. ...

Evaluation of the Fast Healthcare Interoperability Resources (FHIR) Standard for Representation of Knowledge Bases Encoded in the Arden Syntax
  • Citing Article
  • August 2019

... A clinical decision support application contains a knowledge base (KB), an inference engine, a means of communicating results (instructions or actions), a user interface, and an associated patient database (DB) [10][11][12]. The KB is a collection of encoded knowledge needed to solve problems in some medical area. ...

Clinical Decision Support Systems
  • Citing Chapter
  • January 2002

... The Arden Syntax has been designed for building clinical decision support systems and its Medical Logic Modules (MLMs) encode medical knowledge and decision rules, using a syntax resembling natural language. [44] However, as the Arden Syntax evolved over time, supporting more complex clinical decision support systems, its complexity has also increased [45]. In summary, these specialized query languages require a deep understanding of the underlying data models and have not been tailored to the specific task of selecting and aggregating facts at patient-level that we address in our work [46]. ...

Arden Syntax: Then, now, and in the future
  • Citing Article
  • October 2018

Artificial Intelligence in Medicine

... The identification of the risk of LA in the clinical and speech-language assessment of swallowing has several origins, which leads to a constant increase in studies that improve knowledge. This is why the advances in this CDSS need to be dynamic, continuous, modified, and adaptive, prospectively [37]. ...

Advances in Clinical Decision Support: Highlights of Practice and the Literature 2015-2016
  • Citing Article
  • August 2017

Yearbook of Medical Informatics

... Only English articles published from 2015 to 2021 were included. We limited the publications to those published after 2015 due to the fact that CDSSs only started to be commonly used in health care, health science, and clinical informatics in 2015 [27]. Online databases showed a significant increase in the number of publications related to the use of CDSSs in telemedicine in 2015 and an exponential increase since the COVID-19 pandemic [28]. ...

Advances in Clinical Decision Support: Highlights of Practice and the Literature 2015-2016
  • Citing Article
  • August 2017

Yearbook of Medical Informatics

... Arden Syntax is a formalism supervised by Health Level Seven International (HL7) for representation of procedural medical knowledge as medical logic modules (MLMs) [1]. One popular formalism for facilitating data interoperability is the HL7 Fast Healthcare Interoperability Resources (FHIR). ...

Evolution of the Arden Syntax: Key Technical Issues from the Standards Development Organization Perspective

Artificial Intelligence in Medicine

... Althogh the RECAP-V0 template, developed by the Delphi study, contained ten questions, 12 the validated models contained four (RECAP-O2) and five (RECAP-GP) items only, significantly improving their fitness for use in the clinical setting. 27 The choice of logistic regression modelling means that most electronic health record systems using SNOMED codes will be able to recreate the RECAP electronic templates and integrate the score calculator into the system. 28 Moreover, data on hospitalisation was extracted from the NHS databases, which contain information on admission to tertiary NHS care facilities in England and are considered a reliable data source. ...

Decision Rules and Expressions
  • Citing Article
  • May 2014