Variability of arterial blood gas values over time in stable medical ICU patients.

Abstract:

:The spontaneous variability of arterial blood gas and pH values (ABGs) was examined in a group of 28 typical stable medical ICU patients under a variety of ventilatory conditions. In each patient, 13 ABG specimens were measured at 5-min intervals during a 1-h study period using a new bedside, extravascular fluorescent blood gas monitor. For all patients, the mean coefficient of variation (C) was 6.1 percent for PO2 and 4.7 percent for PCO2. The average SD for pH was 0.012. We conclude that the spontaneous variability for ABG values over a 1-h period is substantial and that this variability should be taken into account when making clinical decisions based on ABG values.

journal_name

Chest

journal_title

Chest

authors

Sasse SA,Chen PA,Mahutte CK

doi

10.1378/chest.106.1.187

subject

Has Abstract

pub_date

1994-07-01 00:00:00

pages

187-93

issue

1

eissn

0012-3692

issn

1931-3543

pii

S0012-3692(16)38980-2

journal_volume

106

pub_type

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