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W Rishel

Publications and source records attributed to W Rishel.

8 recordsLinked to original sources
PubMed1999

HL7 document patient record architecture: an XML document architecture based on a shared information model.

The HL7 SGML/XML Special Interest Group is developing the HL7 Document Patient Record Architecture. This draft proposal strives to create a common data architecture for the interoperability of healthcare documents. Key components are that it is under the umbrella of HL7 standards, it is specified in Extensible Markup Language, the semantics are drawn from the HL7 Reference Information Model, and the document specifications form an architecture that, in aggregate, define the semantics and structural constraints necessary for the exchange of clinical documents. The proposal is a work in progress and has not yet been submitted to HL7's formal balloting process.

Humans↗
PubMed1998

SGML and XML as interchange formats for HL7 messages.

OBJECTIVE: To report on the use of SGML and XML (a proper subset of SGML) as transfer syntaxes for HL7 Version 2.3 and Version 3.0 messages. METHODS: The methodology has focused largely on two questions: Can it be done? How best to do it? The first question is addressed by attempting to build an SGML/XML representation of HL7 messages. The second question requires a consideration of several metrics: message length, speed of message creation and parsing, interversion compatibility, local customization, conformance determination, and the availability of software tools and skill on the format. RESULTS: Detailed specifications for expressing HL7 in SGML and XML have been developed. Some HL7 requirements are not readily expressed, while some ambiguous areas of the HL7 standard are made explicit in the SGML/XML representation. With the current design, an SGML/XML parser can extract any component of any data type from a message. CONCLUSIONS: SGML and XML can both serve as implementable message specifications for HL7 Version 2.3 and Version 3.0 messages. The ability to explicitly represent an HL7 requirement in SGML/XML confers the ability to validate that requirement with an SGML parser. The optimal message representation will be a balance of functional, technical, and practical requirements.

Algorithms↗
PubMed1996

HL7 with CORBA and OLE: software components for healthcare.

Componentized software promises easier, more fine-grained integration of disparate software systems. Variations of the technology can help to achieve tight coupling among disparate programs on the clinical workstation or across wide area networks. HL7 members have been designing extensions to the protocol for the exchange of healthcare information using Microsoft OLE and CORBA technologies. Extensive prototyping has been performed, including the simultaneous interconnection of sixteen different vendor systems exchanging demographic data and lab results. The first release of this standard will be notable in that the specifications for OLE and CORBA will be entirely isomorphic, they will be based directly, on HL7 version 2.3, and they may easily be implemented in systems that are not written using object-oriented programming tools. As HL7 version 3 is developed on an object-oriented model of healthcare information, the same approach will be used so information about the objects may be shared using CORBA and OLE.

Computer Communication Networks↗
PubMed1992

Standards seen as a key to managing healthcare costs.

Unless the HL7 standards group acts soon to develop timely, enforceable standards, they may be overtaken by the public outcry to contain healthcare costs immediately. Federal government representatives addressed a recent HL7 plenary session and warned that the public finally understands that information is a vital link in controlling runaway costs. They want standards now.

Cost Control↗
PubMed1988

Weaning of premature infants from the incubator to an open crib.

Thirty pairs of healthy, growing preterm infants were included in this randomized prospective study comparing thermal weaning at 1700 g with that at 1800 g. Based on an intention-to-treat analysis, infants weaned at 1700 g were discharged 1.1 days sooner than those weaned at 1800 g. However, this result was not statistically significant (p = 0.13). On the other hand, differences are apparent between treatments in some strata based on birth weight (p = 0.0056). Evidence also existed that time from entry (at 1500 g) to discharge depended on birth weight stratum (p = 0.010). No infant in either group lost weight after successful weaning, and mean 24-hour weight gains were similar for both groups. Two infants were weaned at 1800 g requiring return to the incubator due to hypothermia, and four infants weaned at 1700 g likewise requiring return to the incubator. The number weaned at 1700 g who had birth weight of 1000 g or less and who developed hypothermia appeared substantial (three of six such infants). Thus, it appears that thermal weaning at 1700 g may be safe and effective only for prematures with birth weight above 1000 g. Additional study appears needed.

Body Weight↗