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Articles by J. M. Lorenz
Showing articles by "J. M. Lorenz"
Article
January 2004
Transcutaneous monitoring of pO2 and pCO2 in neonates - a blessing or a burden?
Monitoring of blood gases is essential in neonatal intensive care. Traditionally arterial samples have been considered the gold standard, but in critically ill neonates physiological changes can happen within minutes to a degree endangering the newborn.
Clinicians can therefore not rely solely on intermittent...
Neonatology
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
Proficiency testing versus QC-data-comparison programs
Evaluation of the quality of the total testing process of a laboratory is very important to assure that the results supplied by the laboratory are correct and can be used for decisions by the personnel ordering the tests. In this paper Proficiency Testing (PT) or External Quality Assessment (EQA) is described.
PT is...
Quality assurance
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
July 2003
All about base excess – to BE or not to BE
In 1948, Singer and Hastings introduced the concept of buffer base (BB). The change in BB from "normal" was called deltaBB (ΔBB). This change in BB was an expression of the non-respiratory (metabolic) component of an acid-base disturbance. This was the first approximation to base excess.
In the 1950s, Astrup and...
Blood gases/acid-base
Hemoglobins
Article
May 2003
Increased blood lactate levels: a marker of...?
Since Meakins in 1927 described the relationship between increased blood lactate levels and the presence of oxygen debt (tissue hypoxia) in patients with circulatory shock [1], lactate levels have been used to diagnose and monitor the treatment of these patients.
However, as lactate is a normal (end) product of...
Glucose
Lactate
Hemoglobins
Kidneys/fluids
Article
April 2003
STAT testing in the future
Since the mid 1990's Point of Care Testing (POCT) has been viewed as a solution to a declared need for Short Turn Around Testing (STAT).
However, is it being utilized in a way that meets the needs of improving patient care and hospital quality assurance? What is STAT testing, why and how did it become POCT? How is...
Process optimization
Point-of-care testing
Information management
Glucose
Creatinine/urea
Article
March 2003
Remote support of hospital equipment – how does it work and what are the data security issues?
It is more and more common that computer-based systems in hospitals are serviced or "looked after" by service engineers dialing in from remote locations.
The combination of highly computerized laboratory equipment and the emerging network technologies makes remote support a very attractive possibility. In many...
Process optimization
Point-of-care testing
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
December 2002
From hospitals to project organizations
If you think only private corporations can call themselves project organizations, think again. Hospitals around the world are increasingly seeing themselves as project organizations and relying on project groups to explore and implement new technologies.
Meanwhile, healthcare workers participating in these projects...
Process optimization
Point-of-care testing
Glucose
