A LONGITUDINAL STUDY OF THE GROWTH OF LOW BIRTH WEIGHT INFANTS

PEDIATRICS ◽  
1973 ◽  
Vol 51 (4) ◽  
pp. 620-628
Author(s):  
Mary O. Cruise
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Gestational Age ◽  
Study Groups ◽  
Full Term ◽  
Normal Velocity ◽  
Low Birth Weight Infants ◽  
Term Infants ◽  
Actual Length ◽  
Growth Measurement

Physicians may need to consider the growth of children–especially those of unusual size for age–from two different viewpoints. Most pediatricians are used to thinking of what may be called distance growth: how "normal" is a child's actual length at 2 years? The other aspect, velocity growth, expresses the rate or speed at which the child has grown. This may be equal for children of corresponding ages, whereas their distance growth may vary greatly. Failure of growth at a normal rate in one child should be investigated whereas another child with horizontal growth measurement outside ± 2 SD, but with normal velocity growth may require no investigation. Data from this study provide not only mean measurements for weight, length, and head circumference of low birth weight infants who are grouped by sex and gestational age, but also provide velocity growth from birth through 3 years of age. Preterm infants (gestational age < 37 weeks) had greater velocity growth rates than small-for-date infants (full-term, low birth weight). At 1, 2, and 3 years the SFD infants had the smallest mean measurements of all the study groups of low birth weight infants. Comparative full-term infants were larger than low birth weight infants from birth through 3 years of age.

SMALL-FOR-DATES NEONATES

PEDIATRICS ◽  
1966 ◽  
Vol 38 (6) ◽  
pp. 1013-1019
Author(s):  
A. Frederick North
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Gestational Age ◽  
Lower Incidence ◽  
Clinical Status ◽  
Low Birth Weight Infants ◽  
Term Infants ◽  
Neonatal Complications ◽  
Antecedent Conditions ◽  
Longterm Outcome

Records of 762 infants weighing less than 2,500 gm at birth and born after 37 to 44 weeks' gestation—small-for-dates neonates—were compared with records of infants with similar birth weight born after 28 to 32 weeks' gestation—pre-term infants—and with records of infants weighing 3,000 to 3,500 gm born after 37 to 44 weeks' gestation—"average" infants. Records were compared with regard to maternal and gestational features, perinatal survival, and neonatal complications. The group of small-for-dates neonates differed markedly from the pre-term infants in 15 of the 35 variables examined and from the "average" infants in 31 of the 35 variables examined. Small-for-dates infants showed a higher incidence of maternal toxemia and hypertension, a greater incidence of primiparous mothers, a lower incidence of gestational bleeding, a lower incidence of low-birth-weight siblings, fewer neonatal complications and deaths, and a lower incidence of hemolytic disease and pulmonary disease in the newborn period than did weight-matched pre-term controls. Gestational age, though subject to error in measurement, is as important a predictor of neonatal clinical status and outcome as is birth weight. Future studies of the antecedent conditions, neonatal course, and longterm outcome of low-birth-weight infants must consider both birth weight and gestational age.

Feeding the Very Low-Birth-Weight Infant

1993 ◽  
Vol 14 (4) ◽  
pp. 123-132
Author(s):  
Rene Romero ◽  
Ronald E. Kleinman
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Very Low Birth Weight ◽  
The United States ◽  
Full Term ◽  
Nutrition Support ◽  
Low Birth Weight Infants ◽  
Term Infants ◽  
Stage Of Development ◽  
Organ Systems

Unfortunately, premature birth occurs commonly in the United States. Improving the survival of very low-birth-weight (VLBW) infants depends in large part upon understanding the physiologic capabilities of their immature organ systems and providing appropriate support as they mature. Advances in the nutritional support of these infants have contributed to the better outcomes we have come to expect today, even for the smallest infants. In this review, we will discuss the limitations of gastrointestinal function and the unique nutritional requirements of very low-birth-weight infants and describe the current methods of enteral and parenteral nutrition support used to meet these requirements. Developmental Physiology By 24 to 26 weeks of gestation, the fetal gastrointestinal tract is morphologically similar to that of the full-term infant; however, functional development is far from complete. Maturation of gastrointestinal motility, digestion, and absorption continues through much of the first year of life, even in full-term infants, as a result of an interplay between the preprogrammed "biological clock" and environmental influences. The decision to feed the VLBW infant must take into account the developmental limitations as well as the potential for enhancing intestinal maturation at each stage of development (Table 1). Fetal swallowing is evident at the beginning of the second trimester.

scholarly journals The influence of birth weight and gestational age on kidney function in premature infants

2021 ◽  
Vol 24 (4) ◽  
pp. 222-230
Author(s):  
Bella D. Tsintsadze ◽  
Klavdiya A. Kazakova ◽  
Vladislav V. Chernikov ◽  
Andrey P. Fisenko ◽  
Aleksey N. Tsygin
Keyword(s):  
Early Childhood ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Serum Creatinine ◽  
Premature Infants ◽  
Gestational Age ◽  
Full Term ◽  
Enzymatic Method ◽  
Term Infants ◽  
Blood Creatinine

Introduction. The impact of prematurity on the functional state of the kidneys in infants has not yet been sufficiently studied. Aim. To determine the influence of birth weight and gestational age on the creatinine level in the blood and glomerular filtration rate (GFR) in early childhood. Materials and methods. A retrospective analysis was conducted on medical records of 316 children aged from 1 month to 1.5 years, hospitalized at the Department of Early Childhood Pathology (National Medical Research Center for Children’s Health, Moscow) from 2012 to 2020 due to consequences of perinatal CNS damage. Children without congenital kidney diseases, with normal urine values in medical history, without structural abnormalities on ultrasound were included in this study. Serum creatinine was determined by the enzymatic method, GFR - by the Schwartz’s formula using a coefficient of 0.413, as well as, previously proposed coefficients of 0.33 for premature and 0.44 for full-term infants. Results. In premature infants, notably born with extremely low birth weight and very low birth weight, at the age of 1 year, serum creatinine is reduced compared to full-term infants, GFR in deep-premature infants exceeds the level of GFR in full-term infants by the year. The results allow concluding the method of calculating GFR by formulas based on serum creatinine to be invalid. Due to possible hyperfiltration in preterm infants, they need regular monitoring urine tests, blood pressure, due to the risk of developing chronic kidney disease. Conclusions. It is necessary to search for other methods for determining GFR in extremely premature infants. The established indices of the blood creatinine content can be used as reference values for different periods of gestation and body weight at birth in institutions using the enzymatic method for determining blood creatinine. The obtained GFR indices as a reference can be recommended for full-term and premature babies born after 32 weeks of gestation and with a birth weight of more than 1500 g.

Postnatal Persistence of Capillary-Venous Differences in Hematocrit and Hemoglobin Values in Low-Birth-Weight and Term Infants

PEDIATRICS ◽  
1982 ◽  
Vol 70 (6) ◽  
pp. 956-957
Author(s):  
Luis M. Rivera ◽  
Nathan Rudolph
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Preterm Infants ◽  
Full Term ◽  
Low Birth Weight Infants ◽  
Term Infants ◽  
The Third

Full-term and preterm infants were studied to determine whether differences between capillary and venous hematocrit and hemoglobin values were detectable after the first week of life. Significant differences were shown to persist in both term and preterm infants into at least the third postnatal months. However, the differences were considerably greater in low-birth-weight infants, with mean capillary values at ages 4 to 6 postnatal weeks approximately 11% to 12% higher than the corresponding venous values. The data indicated that capillary-venous differences were related not only to postnatal age, but also to postconceptual age.

scholarly journals Kinematic Analysis of Kicking Movements in Preterm Infants With Very Low Birth Weight and Full-Term Infants

2002 ◽  
Vol 82 (2) ◽  
pp. 148-159 ◽  
Author(s):  
Suh-Fang Jeng ◽  
Li-Chiou Chen ◽  
Kuo-Inn Tsou Yau
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Preterm Infants ◽  
Gestational Age ◽  
Kinematic Analysis ◽  
Very Low Birth Weight ◽  
Full Term ◽  
Coordination Pattern ◽  
Term Infants ◽  
Spontaneous Movements

Abstract Background and Purpose. Study of kicking development provides important information to understand how early spontaneous movements change in infants as they acquire voluntary control. Researchers have investigated the kicking movements of preterm infants; however, the movement patterns that they have described were inconsistent. The purpose of this study, therefore, was to examine the development of kicking movements with kinematic analysis in preterm infants with very low birth weight (VLBW) and full-term infants. Subjects and Methods. Twenty-two infants with VLBW who were divided into low gestational age (gestational age of <30 weeks, n=9) and high gestational age (gestational age of ≥30 weeks, n=13) classes and 22 full-term infants were evaluated during kicking movements using 4 synchronized cameras and 3-dimensional kinematic analysis when the infants were 2 and 4 months of corrected age. Results. The infants with VLBW and a high gestational age showed similar kicking movements compared with the full-term infants. In contrast, the infants with VLBW and a low gestational age exhibited a higher kick frequency and a shorter flexion phase at 4 months of corrected age. They also exhibited a higher hip-knee correlation and lower variability in the interlimb coordination pattern at 2 and 4 months of corrected age. Discussion and Conclusion. The findings indicate that infants with VLBW, particularly those with a low gestational age, have age-related differences in movement organization and coordination of kicking compared with full-term infants.

scholarly journals Comparison of blood glucose levels in breastfed vs. formula-fed low birth weight infants

2009 ◽  
Vol 49 (1) ◽  
pp. 15
Author(s):  
Eli Tua Pangaribuan ◽  
Bugis M. Lubis ◽  
Pertin Sianturi ◽  
Emil Azlin ◽  
Guslihan D. Tjipta
Keyword(s):  
Blood Glucose ◽  
Birth Weight ◽  
Low Birth Weight ◽  
Low Birthweight ◽  
Mode Of Delivery ◽  
Full Term ◽  
Low Birth Weight Infants ◽  
Term Infants ◽  
Glucose Levels ◽  
Blood Glucose Levels

Background  Low  birth weight infants are defined  as  babies withbirth weight less  than  2500 grams.  Low  birth weight infants tendto suffer from hypoglycemia compared to full term infants.  Theincidence  of  hypoglycemia in newborns varies between 1.3 and  3per 1000 live births. Blood glucose levels in formula-fed infantsare lower  than  those in breastfed infants.Objective  To  compare blood glucose levels in breastfed  andformula-fed low birth weight infants.Methods  A cross sectional study was conducted between February2007  and  June 2007  at  Pirngadi and H. Adam Malik GeneralHospital in Medan,  North  Sumatra, Indonesia. All low birthweight babies were classified into two groups: the breastfed  andformula-fed. Each group consisted  of  32 infants. Capillary bloodwas collected using heel pricks  at  1,  48,  and  72 hours after birth,and plasma glucose was evaluated using the Glucotrend2 bloodglucose test.Results  The  breastfed low birth weight infants had significantlyhigher blood glucose levels (P=0.002)  than  formula-fed low birthweight infants. Mode of delivery  was  related to blood glucose level.Infant delivered  by  caesarean section had significantly differentblood glucose levels  at  1 hour  (P=0.005)  and  72  hours afterbirth (P=0.027).  The  full-term infants had significantly higherblood glucose level (P=0.007)  than  the small for gestational ageinfants.Conclusions  Generally,  low  birth weight infants have hypoglycemiaafter first hour  of  delivery. Breastfed low birth weight infants havehigher blood glucose levels  than  formula-fed low birth weightinfants.

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