Arden Syntax V2.7

DESCRIPTION

The HL7 International Arden Syntax for Medical Logic Modules (MLMs) is an ANSI-approved American National Standard language for encoding medical knowledge and representing and sharing that knowledge among personnel, information systems and institutions. The Arden Syntax for Medical Logic Modules (MLMs) assists physicians in decisions and alerts based on logic encoded into health knowledge bases called MLMs, each of which contains sufficient knowledge to make a single decision. With an appropriate computer program (known as an event monitor), MLMs run automatically, generating advice where and when it is needed. For example, one MLM warns physicians when a patient develops new or worsening kidney failure. Arden Syntax is an open standard for representing CLINICAL knowledge, to be used by individual clinicians, institutions, and vendors to develop clinical rules (rules that directly impact patient care) using a standard format and language. It is also suited for writing business rules that directly interface with clinical data.

ALTERNATIVE NAMES

Arden Syntax V2.7 may also go by the following names or acronyms:

TARGETS

• Organizations that require or develop systems that automatically assist physicians in decisions and alerts,
• Physicians, other clinicians, institutions, and vendors
• Health knowledge bases that can be represented using the Arden Syntax include contradiction alerts, management suggestions, data interpretations, treatment protocols, and diagnosis scores

BENEFITS

• Allows for distributed clinical rules development among institutions
• Allows for sharing of clinical rules development costs among institutions
• Allows for improved dissemination of clinical knowledge

IMPLEMENTATIONS/CASE STUDIES

Commercial vendors:

• AGFA
• Allscripts (previously Eclipsys)
• McKesson
• Siemens Medical Systems

Institution-specific systems:

• Columbia University

DEVELOPMENT BACKGROUND

The American Society for Testing and Materials (ASTM) previously adopted what is now Arden Syntax for MLMs as document E 1460, under subcommittee E31.15 Health Knowledge Representation. Adopted by ASTM in 1992, this became Arden Syntax Version 1.0. Beginning in the summer of 1998, sponsorship of this standard was moved to Health Level Seven (HL7). The Clinical Decision Support and Arden Syntax Work Groups of HL7 oversee maintenance of the standard. Arden Syntax Version 2.0 which was formally adopted by HL7 and ANSI in August 1999. The move of Arden Syntax from ASTM to Health Level Seven originated in 1997. The HL7 Clinical Decision Support Work Group first met in June 1997 and was organized by Carol Broverman. In the summer of 1999, the Arden Syntax Standard was formally transferred from ASTM to HL7, and Version 2 of the standard was formally endorsed by HL7 and ANSI. Associated work groups have followed, including Clinical Genomics, Regulated Clinical Research Information Management (RCRIM) and Electronic Health Records (EHR). All of these groups were or are sponsored by the Clinical Decision Support Work Group. In order to make the overall work group less technology-specific, the Arden Syntax was spun off into its own work group in January, 2001, under the sponsorship of the Clinical Decision Support Work Group. Version 2.1 of the standard was formally endorsed by HL7 and ANSI during 2002. Version 2.1 introduces a structured message as an optional part of the WRITE statement. Using this structure, which is encoded using an XML DTD, authors can specify many different parameters of an output message of a decision support system in a standard fashion. These include time outs and escalation information for alerts; embedded orders; subject; and recommendation. The Arden Syntax standard is now at Version 2.7 and was approved by ANSI in December 2008. It is available in the bookstore area of the HL7 website: http://www.HL7.org. The Arden Syntax internal programming model is based on declarative logic derived from a multitude of sources (including PASCAL, LISP, APL, PL/1 and HCOM). Triggering of individual models is a hybrid of direct calling (similar to a RPC) and a production model. Oldest decision support standard

RELATED DOCUMENTS

	Arden Syntax V2.7		(Download) (1.17 MB)
	Arden Syntax v2.0	(View Brief)	(Download) (621 KB)
	Arden Syntax v2.1	(View Brief)	(Download) (1.11 MB)
	Arden Syntax v2.1 - Pocket Guide	(View Brief)
	Arden Syntax v2.5	(View Brief)	(Download) (1.23 MB)
	Arden Syntax V2.6	(View Brief)	(Download) (1.14 MB)

BALLOT TYPES

• Normative

STATUS DATE

2008-12-10

RESPONSIBLE WORK GROUP

PRODUCT TYPES

• ANSI-approved
• Encoding Syntax

FAMILY

• Arden

CURRENT STATE

• Retired

REALM

• Universal