Correlation of Venous Blood Gas and Pulse Oximetry With Arterial Blood Gas in the Undifferentiated Critically Ill Patient.

Publication/Presentation Date

3-1-2018

Abstract

RATIONALE: Blood gas analysis is often used to assess acid-base, ventilation, and oxygenation status in critically ill patients. Although arterial blood gas (ABG) analysis remains the gold standard, venous blood gas (VBG) analysis has been shown to correlate with ABG analysis and has been proposed as a safer less invasive alternative to ABG analysis.

OBJECTIVE: The purpose of this study was to evaluate the correlation of VBG analysis plus pulse oximetry (SpO

METHODS: We performed a prospective cohort study of patients in the emergency department (ED) and intensive care unit (ICU) at a single academic tertiary referral center. Patients were eligible for enrollment if the treating physician ordered an ABG. Statistical analysis of VBG, SpO

MAIN RESULTS: There were 156 patients enrolled, and 129 patients completed the study. Of the patients completing the study, 53 (41.1%) were in the ED, 41 (31.8%) were in the medical ICU, and 35 (27.1%) were in the surgical ICU. The mean difference for pH between VBG and ABG was 0.03 (95% confidence interval: 0.03-0.04) with a Pearson correlation of 0.94. The mean difference for pCO

CONCLUSION: In this population of undifferentiated critically ill patients, pH and pCO

Volume

33

Issue

3

First Page

176

Last Page

181

ISSN

1525-1489

Disciplines

Medicine and Health Sciences

PubMedID

27283009

Department(s)

Department of Emergency Medicine

Document Type

Article

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