Systematic Determination of Caffeine Plasma Concentrations at Birth in Preterm and Full-Term Infants

Abstract Seven different digoxin immunoassay kits showed cross reactivity with an endogenous digoxin-like immunoreactive substance consistently present in serum of neonates, whether premature or full-term. The degree of interference, in decreasing order was: NML greater than New England Nuclear greater than Bio-Rad greater than Clinical Assays greater than Becton Dickinson greater than Serono greater than Syva (EMIT). More recently purchased NML kits showed less sensitivity to the substance, evidently reflecting lot-to-lot differences in antibody. A single baseline determination of the substance before digoxin is administered inadequately compensates for this interference, because the interferent concentrations can differ from day to day, with evidence that it may be most concentrated on the fourth to sixth postnatal day. Its concentration in the serum of neonates is unrelated to the concentration of dehydroepiandrostenedione sulfate, an indicator of fetal adrenal-cortical activity.

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DETERMINATION OF ERYTHROCYTE SURVIVAL IN NEWBORN INFANTS BY MEANS OF CR51-LABELLED ERYTHROCYTES

PEDIATRICS ◽

10.1542/peds.27.3.354 ◽

1961 ◽

Vol 27 (3) ◽

pp. 354-361 ◽

Cited By ~ 1

Author(s):

Eugene Kaplan ◽

Ku Shin Hsu

Keyword(s):

Life Span ◽

Precise Measurement ◽

Newborn Infants ◽

Full Term ◽

Term Infants ◽

Erythrocyte Survival ◽

Apparent Reduction ◽

Placental Blood ◽

Survival Studies

There is no difference in the rate of Cr51 elution from intact cord or adult erythrocytes Variable results of survival studies suggest that placental blood is unsuited for valid and precise measurement of erythrocyte life span. Decreased survival is not present for the erythrocytes of the normal full-term newborn infant in the first 5 days of life when compared with the adult. In the premature infant of the same age shortened life span is found of erythrocytes produced in utero. This may contribute in some degree to the characteristic increase in severity of premature anemia and hyperbilirbinemia. The apparent reduction in erythrocyte life span during the second and third months of life in both premature and full-term infants ma reflect an older erythrocyte population resultant from decreased erythropoiesis in the first weeks of life.

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Relationship of Maternal and Infant Iron Stores as Assessed by Determination of Plasma Ferritin

PEDIATRICS ◽

10.1542/peds.55.5.694 ◽

1975 ◽

Vol 55 (5) ◽

pp. 694-699 ◽

Cited By ~ 1

Author(s):

Ernesto Rios ◽

David A. Lipschitz ◽

James D. Cook ◽

Nathan J. Smith

Keyword(s):

Dietary Intake ◽

Iron Supplementation ◽

Iron Status ◽

Full Term ◽

Term Infants ◽

Iron Storage ◽

Iron Stores ◽

Low Levels ◽

Relationship Of

Using plasma ferritin derminations, iron stores have been evaluated at the end of pregnancy in 26 women and followed sequentially in their healthy, full-term infants. It has been shown that the iron storage status of the mother does not affect the iron status of the infant. Determinations of plasma ferritin in the infants have demonstrated that by 6 months of age the iron status of the infant reflects the adequacy of the dietary intake of iron, In the absence of effective iron supplementation during the first six months, plasma ferritin levels fall to low levels, indicating the depletion of iron stores in the infant.

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Determination of Thermoregulatory State in Full-Term Infants

Nursing Research ◽

10.1097/00006199-199307000-00003 ◽

1993 ◽

Vol 42 (4) ◽

pp. 204???207 ◽

Cited By ~ 4

Author(s):

JANE BLISS-HOLTZ

Keyword(s):

Full Term ◽

Term Infants

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Neural activation in mothers of preterm and full-term infants: Preliminary findings from a 3T fMRI study

PsycEXTRA Dataset ◽

10.1037/e579192013-354 ◽

2012 ◽

Author(s):

R. Montirosso ◽

S. Moriconi ◽

B. Riccardi ◽

G. Reni ◽

F. Arrigoni ◽

...

Keyword(s):

Full Term ◽

Neural Activation ◽

Term Infants ◽

Fmri Study

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Tire Treadwear — A Comprehensive Evaluation of the Factors: Generic Type, Aspect Ratio, Tread Pattern, and Tread Composition Part I: Introduction and Details on the Organization of the Program

Tire Science and Technology ◽

10.2346/1.2148774 ◽

1986 ◽

Vol 14 (4) ◽

pp. 201-218 ◽

Cited By ~ 3

Author(s):

A. G. Veith

Keyword(s):

Aspect Ratio ◽

Comprehensive Evaluation ◽

Test Method ◽

Interactive Effects ◽

Data Analyses ◽

Main Effect ◽

Systematic Determination ◽

Relationship Of ◽

The Relationship

Abstract This four-part series of papers addresses the problem of systematic determination of the influence of several tire factors on tire treadwear. Both the main effect of each factor and some of their interactive effects are included. The program was also structured to evaluate the influence of some external-to-tire conditions on the relationship of tire factors to treadwear. Part I describes the experimental design used to evaluate the effects on treadwear of generic tire type, aspect ratio, tread pattern (groove or void level), type of pattern (straight rib or block), and tread compound. Construction procedures and precautions used to obtain a valid and functional test method are included. Two guiding principles to be used in the data analyses of Parts II and III are discussed. These are the fractional groove and void concept, to characterize tread pattern geometry, and a demonstration of the equivalence of wear rate for identical compounds on whole tread or multi-section tread tires.

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