Comparison between Calculated O2 Saturation Values and Those Determined Directly In Vitro (Blood Gas Analyzer vs. Oxymeter)

2015 ◽  
pp. 124-129
Author(s):  
R. Zander
Keyword(s):  
Blood Gas ◽  
Gas Analyzer ◽  
Blood Gas Analyzer

In vitro Tests and Modelization of Bicarbonate Kinetics and Mass Transfers During Online Hemodiafiltration

2009 ◽  
Vol 32 (8) ◽  
pp. 482-491 ◽  
Author(s):  
HÉLÈNE Morel ◽  
Michel Y. Jaffrin ◽  
Patrick Paullier ◽  
CÉCILE Legallais
Keyword(s):  
Blood Gases ◽  
Mass Conservation ◽  
In Vitro Tests ◽  
Blood Gas ◽  
Gas Analyzer ◽  
Mass Transfers ◽  
Kinetics Of ◽  
Blood Gas Analyzer ◽  
Over Time

This paper proposes an in vitro hemodiafiltration (HDF) model in which the patient is represented by a 2 L bag of fresh heparinized bovine blood circulated by a 4008H monitor through a 0.6 m2 hemodialyzer to investigate kinetics of bicarbonate (HCO3-) during online post-dilution HDF. Five tests were carried out, with three ultrafiltration rates, zero (HD test), 30 and 50 ml/min. Blood gases, pH, HCO3- hematocrit and electrolytes were measured with an ABL77 (Radiometer) blood gas analyzer, and HCO3- was simultaneously measured with a biochemistry analyzer. The variation over time of plasma HCO3- concentrations was also calculated using mass conservation and the model of Legallais et al (JMS 168, 2000, 3–15). Agreement between theoretical and measured concentrations was good during the first 25 minutes of each test, corresponding to the time necessary to dialyze the blood. In hemodialysis (HD), there was an HCO3- mass transfer into blood through the membrane due to diffusion which vanished after 40 minutes, while in HDF tests, blood lost HCO3- due to ultrafiltration after 10 minutes. With reinjection, the net HCO3- mass flow rate to the “patient” decayed, from 1.8 mmol/min at t=0 to zero at the end of the test (t=60 min), and was higher in HD than in HDF. “Patient” dialysance, taking into account reinjection, was positive in all tests, and decayed from about 110 ml/min to 40 ml/min at the end of dialysis. These data confirmed that online HDF automatically corrects acidosis without creating alkalosis when HCO3- dialysate concentration is around 30 mmol/L.

Use of a Sodium Chloride—Phosphate Buffer for pH Standardization in a New Blood-Gas Analyzer with an Isotonic Sodium Chloride Bridge

1973 ◽  
Vol 19 (11) ◽  
pp. 1243-1247 ◽  
Author(s):  
P A Drinker ◽  
D C Noonan ◽  
N Ramanaiah ◽  
J R Tole
Keyword(s):  
Sodium Chloride ◽  
Blood Gas ◽  
Gas Analyzer ◽  
Liquid Junction ◽  
Isotonic Sodium Chloride ◽  
Salt Depletion ◽  
The Stability ◽  
Conventional Scheme ◽  
Blood Gas Analyzer ◽  
Junction Potential

Abstract Two different blood-gas analyzers were tested to determine the effects on blood pH measurement of changing the reference bridge solution from saturated KCl to normal saline (0.16 mol of NaCl per liter). This change, which necessitated the preparation of modified buffers equimolal in NaCl with respect to blood, virtually eliminated salt depletion of the bridge solution and improved the stability of the liquid-junction potential between the bridge solution and the sample. The instruments we used were the Corning 165 pH Blood Gas Analyzer and the Radiometer E5021 pH Electrode with PHM72 Acid Base Analyzer. Comparison of results on clinical blood samples indicates that performance with the modified bufferbridge system is the same as that obtained with the conventional scheme. Analytical performances of the Corning and Radiometer instruments for PO2 and PCO2, as well as for pH, were comparable.

ENVIRONMENTAL COMPATIBILITY AND ACCURACY OF A PORTABLE BLOOD GAS ANALYZER IN THE PREHOSPITAL SETTING

1995 ◽  
Vol 23 (Supplement) ◽  
pp. A37
Author(s):  
Bartholomew Tortella ◽  
Robert Lavery ◽  
James Doran ◽  
John Seigel
Keyword(s):  
Prehospital Setting ◽  
Blood Gas ◽  
Gas Analyzer ◽  
Environmental Compatibility ◽  
Blood Gas Analyzer

scholarly journals Analytical performance validation and clinical application of blood gas analyzer on the detection of neonatal bilirubin

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Zhaozhong Kuang ◽  
Xiaolong Zong ◽  
Shuang Xing ◽  
Fuguang Zhao ◽  
Shanshan Guo ◽  
...  
Keyword(s):  
Clinical Application ◽  
Analytical Performance ◽  
Blood Gas ◽  
Gas Analyzer ◽  
Performance Validation ◽  
Blood Gas Analyzer

Three-Year Outbreak of Pseudobacteremia with Burkholderia cepacia Traced to a Contaminated Blood Gas Analyzer

1996 ◽  
Vol 17 (11) ◽  
pp. 737-740 ◽  
Author(s):  
Denise Gravel-Tropper ◽  
Mary Lee Sample ◽  
Catherine Oxley ◽  
Baldwin Toye ◽  
Donald E. Woods ◽  
...  
Keyword(s):  
Burkholderia Cepacia ◽  
Blood Gas ◽  
Gas Analyzer ◽  
Contaminated Blood ◽  
Blood Gas Analyzer
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