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Articles by J. M. Lorenz
Showing articles by "J. M. Lorenz"
Article
July 2013
A regional program for POCT service to emergency departments – results and remaining challenges
In a regional top-management decision, our laboratory was given the mission to control and quality assure all POCT activities in a regional network of 10 hospitals with emergency units. Based on previous work, new region-wide recommendations, procurements, IT connectivity, services, training, accreditation (ISO...
Process optimization
Point-of-care testing
Blood gases/acid-base
Glucose
Lactate
Creatinine/urea
D-dimer
CRP
Article
July 2013
How to use high-sensitivity cardiac troponin assays most effectively in clinical practice
Recently developed high-sensitivity cardiac troponin (cTn) assays can measure approximately 10 times lower concentrations with high precision (coefficient of variation, <10 % at the 99th percentile of the upper reference limit) than conventional assays, and can measure cTn concentrations in at least 50 % of a reference ...
Cardiac markers
Troponins
CRP
Natriuretic peptide
Kidneys/fluids
Article
April 2013
Predictive value of C-reactive protein in children with appendicitis
Few studies have addressed the predictive value of C-reactive protein at different cutoff values in appendicitis. We have determined the cutoff values for C-reactive protein levels at different periods during clinical evolution of appendicitis and established their use to support the diagnosis of appendicitis.
The...
Infection/sepsis
Point-of-care testing
CRP
Article
January 2013
NT-proBNP for heart failure diagnosis in primary care
Diagnosing heart failure (HF) in patients presenting in primary care is difficult. Clinical assessment of symptoms and signs has limited sensitivity and specificity.
NT-proBNP determination has been proven to be useful and accurate for ruling out the diagnosis of systolic HF, and some have even proposed different...
Cardiac markers
Point-of-care testing
Natriuretic peptide
Article
January 2013
Blood gas interpretation in the neonate - what do you need to know now?
Many authors contend that drawing of umbilical ABGs is a simple method to evaluate the condition of the neonate and ideally would be routinely done for all newborns [13].
Other authors disagree. Appropriate general principles guide clinicians when drawing and interpreting ABGs for all patients. The special needs of...
Neonatology
Point-of-care testing
Blood gases/acid-base
Preanalytical phase
Lactate
Article
January 2013
pH-adjusted ionized calcium
Calcium is an essential mineral required for numerous biological functions. In circulation, calcium is found in three different fractions, anion-bound, protein-bound and free or ”ionized”.
The amount of calcium in each of these fractions is dependent on the concentration of hydrogen ions, anions and plasma proteins....
Blood gases/acid-base
Electrolytes
Glucose
Creatinine/urea
Lactate
Article
January 2013
Impact of Quick Diagnosis Unit Integrated in an Emergency Department Setting
BACKGROUND: Hospitals in countries with public health systems have recently adopted organizational changes to improve efficiency and resource allocation, and reducing inappropriate hospitalizations has been established as an important goal, as well as avoiding or buffering overcrowding in Emergency Departments.
AIMS: ...
Process optimization
Point-of-care testing
Glucose
Lactate
Creatinine/urea
Hemoglobins
D-dimer
Article
October 2012
100 years of blood gas and acid base analysis in clinical medicine
The term acidosis was first mentioned in the medical literature in 1898 in connection with the description of diabetic ketoacidosis. Alkalosis was first used in human medicine in 1922 by the English physiologist J. S. Haldane; it had been used in veterinary medicine somewhat earlier.
In 1870, the Norwegians C. M....
Blood gases/acid-base
Glucose
Lactate
Hemoglobins
Article
October 2012
Point-of-Care Testing: Making Innovation Work for Patient-Centered Care
Chris Price and Andrew St John have followed their book Point-of-Care Testing for Managers and Policymakers with another look at the subject from strategic vision to change management and implementation in Point-of-Care Testing: Making Innovation Work for Patient-Centered Care.
In their latest book the authors give...
Point-of-care testing
Information management
Cardiac markers
Glucose
D-dimer
Preanalytical phase
Article
September 2012
The importance of quality control (QC) to quality blood gas testing
Test results, essential for quality healthcare, constitute more than 70% of patients’ health records. Because quality results are so important, governments around the world mandate a series of laboratory practices to ensure quality.
All laboratories in the United States follow the Clinical Laboratory Improvement...
Point-of-care testing
Blood gases/acid-base
Quality assurance
