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Lean body mass in small for gestational age and appropriate for gestational age infants

Journal Article · · J. Pediatr.; (United States)
; ;
Dual photon absorptiometry using /sup 153/Gd in a whole-body scanner was used to measure lean body mass (LBM) in 51 newborn infants. LBM% decreased exponentially with increasing gestational age in both small for gestational age (SGA) and appropriate for gestational age (AGA) infants. In preterm SGA and AGA infants LBM was 104% and 103%, respectively, indicating that no fat was detectable. In term SGA infants LBM was 98%, which corresponded to 48 gm fat on average, and in term AGA infants LBM was 87%, which corresponded to 452 gm fat on average. The LBM%, ponderal index, and skinfold thickness were significantly different between AGA and SGA infants. Infants with clinical signs of intrauterine wastage had significantly higher LBM% than did infants without signs of weight loss. Our results on LBM% by dual photon absorptiometry agree with earlier dissection data; the clinically applicable methods of (1) height combined with weight (i.e., ponderal index), (2) skinfold thickness, and (3) scoring by clinical observations are useful for the estimation of lack of fat as an indicator of intrauterine growth retardation.
Research Organization:
Univ. of Copenhagen, Rigshospitalet (Denmark)
OSTI ID:
6867589
Journal Information:
J. Pediatr.; (United States), Journal Name: J. Pediatr.; (United States) Vol. 113:5; ISSN JOPDA
Country of Publication:
United States
Language:
English

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Related Subjects

550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
62 RADIOLOGY AND NUCLEAR MEDICINE
ADIPOSE TISSUE
AGE DEPENDENCE
AGE GROUPS
ANIMAL TISSUES
BETA DECAY RADIOISOTOPES
BODY
BODY COMPOSITION
CHILDREN
COMPUTERIZED TOMOGRAPHY
CONNECTIVE TISSUE
DAYS LIVING RADIOISOTOPES
DIAGNOSTIC TECHNIQUES
ELECTRON CAPTURE RADIOISOTOPES
EMISSION COMPUTED TOMOGRAPHY
EVEN-ODD NUCLEI
GADOLINIUM 153
GADOLINIUM ISOTOPES
GROWTH
INFANTS
INTERMEDIATE MASS NUCLEI
ISOTOPES
NUCLEI
PREGNANCY
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
TISSUES
TOMOGRAPHY