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Articles by John W. Severinghaus
Showing articles by "John W. Severinghaus"
Article
January 2004
Ole Siggaard-Andersen: The man behind the legend
When it comes to acid base, there is no getting around the name of Ole Siggaard-Andersen (OSA). acutecaretesting.org talks to the world-renowned Danish professor, who has become a legend in the field of blood gas.
Blood gases/acid-base
Lactate
Article
January 2004
Useful tips to avoid preanalytical errors in blood gas testing: metabolites
Measurement of glucose and lactate after 30 minutes of storage at room temperature can give deviating results of up to 5 % [1,2] and 29 % of the reference value [3] respectively [1,4], due to in vitro glycolysis
Glucose and lactate are both important parameters in the surveillance of patients in critical care...
Preanalytical phase
Glucose
Quality assurance
Lactate
Blood gases/acid-base
Article
October 2003
Are we ready for the outbreak of an epidemic?
That is the question the Hvidovre Hospital had to ask itself in May 2003, when the Danish National Board of Health and the Copenhagen Hospital Corporation appointed it to be one of the country's three key sites for receiving and treating SARS patients.
Once appointed, the hospital began a painstaking process of...
Point-of-care testing
Article
October 2003
Useful tips to avoid preanalytical errors in blood gas testing: electrolytes
Preanalytical errors are said to be the reason for up to 75 % [1] of all errors in laboratory medicine. The diagnostic consequences depend on the magnitude of the preanalytical error.
In worst case, these errors may lead to mistreatment of patients; in all cases, these errors are an extra workload for the hospital...
Preanalytical phase
Electrolytes
Quality assurance
Glucose
Hemoglobins
Blood gases/acid-base
Article
September 2003
Principles and problems of blood glucose measurement
Although blood glucose measurement is commonly performed, the use of a whole-blood sample introduces complications and compromise in terms of the assay principle, the method of calibration and the expression of results.
Most point-of-care systems are calibrated against a method chosen by the manufacturer for...
Glucose
Preanalytical phase
Article
September 2003
Transcutaneous monitoring - a Danish approach
Danish neonatal intensive care units (NICUs) are known
throughout the world for practicing minimal handling. Because it is
non-invasive, transcutaneous monitoring of pO2
and pCO2 plays an important role in this
setup.
acutecaretesting.org has interviewed Professor Gorm
Greisen, MD, Dr. Med. Sci., and Head of the...
Neonatology
Article
Article
March 2003
Standardizing is the key to effective POCT
According to the Hvidovre Hospital, standardizing is a must
if POCT is to run optimally. In the first article of the series
"POCT setups for blood gas", acutecaretesting.org interviews
the Danish hospital on how they have successfully implemented
POCT.
Point-of-care testing
Information management
Process optimization
Glucose
Hemoglobins
Troponins
Article
February 2003
What is p50
p50 is a shorthand representation of hemoglobin-oxygen affinity. A lower p50 is protective in ambient hypoxemia, whereas increasing the p50 should be beneficial in hypoxia due to lung disease, anemia, and tissue ischemia.
Despite encouraging theoretical and experimental data, it is not yet established that...
Blood gases/acid-base
Hemoglobins
Article
January 2003
What to consider when performing method comparisons on blood gas analyzers
When performing method comparisons, it is important to address a number of preparatory and preanalytical issues to ensure that comparisons solely reflect the analytical differences between the two methods in question.
This article provides preparatory and preanalytical checklists that can be used when comparing two...
Quality assurance
Blood gases/acid-base
Preanalytical phase
