0
Imaging |

"Dueling Algorithms": Evaluating Two Computerized Tools for Temperature Adjustment of Arterial Blood Gas (ABG) Parameters During Therapeutic Hypothermia

Brian Gardner, RRT; Robert Demers; Sokcheat Ly-Stewart; Jonathan Rogel
Author and Funding Information

Southern California Permanente Medical Group, Kaiser Permanente Downey Medical Center, Downey, CA


Chest. 2014;146(4_MeetingAbstracts):571A. doi:10.1378/chest.1988806
Text Size: A A A
Published online

Abstract

SESSION TITLE: Diagnostic Procedures and Interventions Posters

SESSION TYPE: Original Investigation Poster

PRESENTED ON: Wednesday, October 29, 2014 at 01:30 PM - 02:30 PM

PURPOSE: Some arterial blood gas (ABG) analyzers incorporate algorithms which enable these devices to determine certain ABG parameters at hypothermic temperatures. A stand-alone spreadsheet has previously been described1. It implements temperature adjustments whenever in vivo temperatures vary substantially from 37°, such as occurs during therapeutic hypothermia. We compared the performance of an integral software package (Radiometer Medical ApS, Westlake, OH) to that of the spreadsheet.

METHODS: We employed ampules of a pre-packaged control solution (Radiometer QUALICHECK5+®, Level 2, QC number 944-018), aspirating serial aliquots into an analyzer (Radiometer ABL820) for temperatures of 37°, 35°, 34°, 33°, 30°, 25°, and 20° C. The digital values generated by the on-board algorithm were then compared to the corresponding readouts from the spreadsheet.

RESULTS: The data generated by the analyzer’s algorithm were in fairly good agreement with the parameters furnished by the spreadsheet. The numerical differences between the ABL’s pHa and the spreadsheet’s pHa ranged between -0.001 and +0.004 units, while the numerical differences for paCO2 between the two methods ranged between -1.8 torr and -0.1 torr.

CONCLUSIONS: The spreadsheet was previously observed to generate values identical to those published in a classic text (Shapiro BA, Harrison RA, Walton JR. Clinical Application of Blood Gases, 3rd Edition, Chicago, IL, Year Book Medical Publishers, 1977, Table 49.1).

CLINICAL IMPLICATIONS: The ABL’s algorithm supplied pHa and paCO2 figures which appear to be suitably accurate within the range of temperatures typically observed during therapeutic hypothermia.

DISCLOSURE: The following authors have nothing to disclose: Brian Gardner, Robert Demers, Sokcheat Ly-Stewart, Jonathan Rogel

No Product/Research Disclosure Information


Sign In to Access Full Content

MEMBER & INDIVIDUAL SUBSCRIBER

Want Access?

NEW TO CHEST?

Become a CHEST member and receive a FREE subscription as a benefit of membership.

Individuals can purchase this article on ScienceDirect.

Individuals can purchase a subscription to the journal.

Individuals can purchase a subscription to the journal or buy individual articles.

Learn more about membership or Purchase a Full Subscription.

INSTITUTIONAL ACCESS

Institutional access is now available through ScienceDirect and can be purchased at myelsevier.com.

Sign In to Access Full Content

MEMBER & INDIVIDUAL SUBSCRIBER

Want Access?

NEW TO CHEST?

Become a CHEST member and receive a FREE subscription as a benefit of membership.

Individuals can purchase this article on ScienceDirect.

Individuals can purchase a subscription to the journal.

Individuals can purchase a subscription to the journal or buy individual articles.

Learn more about membership or Purchase a Full Subscription.

INSTITUTIONAL ACCESS

Institutional access is now available through ScienceDirect and can be purchased at myelsevier.com.

Figures

Tables

References

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

MEMBER & INDIVIDUAL SUBSCRIBER

Want Access?

NEW TO CHEST?

Become a CHEST member and receive a FREE subscription as a benefit of membership.

Individuals can purchase this article on ScienceDirect.

Individuals can purchase a subscription to the journal.

Individuals can purchase a subscription to the journal or buy individual articles.

Learn more about membership or Purchase a Full Subscription.

INSTITUTIONAL ACCESS

Institutional access is now available through ScienceDirect and can be purchased at myelsevier.com.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Find Similar Articles
CHEST Journal Articles
PubMed Articles
  • CHEST Journal
    Print ISSN: 0012-3692
    Online ISSN: 1931-3543