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Postgraduate Medicine, 2020 Background: We conducted a single-center historical cohort study to evaluate the association between admission serum ionized calcium and mortality in hospitalized patients. Methods: We included hospitalized patients from January 2009 to December 2013 who
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Veterinary Clinics of North America: Small Animal Practice, 2008
Measurement of serum total calcium (tCa) has been relied on for assessment of calcium status, despite the fact that it is the ionized calcium (iCa) fraction that has biologic activity. Serum tCa does not accurately predict iCa status in many clinical conditions. For accurate assessment of iCa status, iCa should be directly measured.
Patricia A, Schenck, Dennis J, Chew
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Measurement of serum total calcium (tCa) has been relied on for assessment of calcium status, despite the fact that it is the ionized calcium (iCa) fraction that has biologic activity. Serum tCa does not accurately predict iCa status in many clinical conditions. For accurate assessment of iCa status, iCa should be directly measured.
Patricia A, Schenck, Dennis J, Chew
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Scandinavian Journal of Clinical and Laboratory Investigation, 1983
"Ionized calcium", in clinical chemistry, designates the free calcium ions which are present in the biological fluids as hydrated ions: Ca2+, 12 H2O. The calcium ion selective electrode measures differences in activity, however, values are reported not as the activity, but as the activity divided by the activity coefficient (gamma) of Ca2+ in "normal ...
O, Siggaard-Andersen +2 more
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"Ionized calcium", in clinical chemistry, designates the free calcium ions which are present in the biological fluids as hydrated ions: Ca2+, 12 H2O. The calcium ion selective electrode measures differences in activity, however, values are reported not as the activity, but as the activity divided by the activity coefficient (gamma) of Ca2+ in "normal ...
O, Siggaard-Andersen +2 more
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Ionized calcium measurements are influenced by albumin – should ionized calcium be corrected?
Scandinavian Journal of Clinical and Laboratory Investigation, 2014Measurement of ionized calcium (CaI) has been reported to be dependent on albumin concentration. We examined the correlation between albumin and CaI measured on different ion selective electrode analyzers and in different groups of patients in a large dataset, extracted from the laboratory information system. In 17,281 outpatients and 16,194 inpatients,
Larsen, Trine R +2 more
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Ionized Calcium in Biological Media
Nature, 1959THE unsatisfactory status of the important problem of the determination of ionized calcium in biological media has recently been re-appraised by W. F. and M. S. Neuman1. After critical examination of methods then existing and of available data on the medium most generally investigated, serum, they state that “the amount of ionized calcium in normal ...
J, ETTORI, S M, SCOGGAN
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Ionized Calcium in Body Fluids
CRC Critical Reviews in Clinical Laboratory Sciences, 1981This article will review the methods currently available to the clinician and research worker for measuring the concentration of ionized calcium in various body fluids including whole blood, serum, plasma, urine, cerebrospinal fluid, milk, and synovial fluid.
W. G. Robertson +2 more
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[Ionized calcium and total calcium in the cat].
Berliner und Munchener tierarztliche Wochenschrift, 1995The concentrations of total calcium (Catot), of the biologically active ionized calcium fraction (Caion), and of albumin were measured from the plasma of 92 healthy cats and 154 patients. Only a moderate correlation existed between the concentrations of Catot and Caion (r = 0.718), so that the concentration of Catot reflects the calcium homeostasis ...
A, Deniz, R, Mischke
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Postgraduate Medicine, 1969
Measurements of serum ionized calcium could be potentially useful in many diseases, including sarcoid, metastatic carcinoma, bone dysplasia and cardiac dysrhythmias. Electrode technology has developed a practical, rapid method using a specific calcium electrode for measuring ionized calcium.
John B. Henry, Milton J. Arras
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Measurements of serum ionized calcium could be potentially useful in many diseases, including sarcoid, metastatic carcinoma, bone dysplasia and cardiac dysrhythmias. Electrode technology has developed a practical, rapid method using a specific calcium electrode for measuring ionized calcium.
John B. Henry, Milton J. Arras
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A reference system for ionized calcium
Scandinavian Journal of Clinical and Laboratory Investigation, 1983Reference systems in clinical chemistry, whether loosely structured or highly organized like the National Reference System for Clinical Chemistry (NRSCC) in the USA are built upon an assemblage of interrelated materials, methods, and agreements. For example, the NRSCC Council has accepted the following items for the measurement of total calcium in ...
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Ionized Calcium: Pediatric Perspective
Pediatric Clinics of North America, 1990Ionized calcium is a physiologically critical calcium pool. It is easily determined, although accuracy depends on sample handling. As a clinical parameter, directly measured ionized calcium has particular import in the care of neonates, patients with sepsis or other cardiovascular instability, massively transfused patients, and those undergoing ...
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