Document Detail

The cardiothoracic ratio in AGA and SGA very low birth weight newborn infants.
MedLine Citation:
PMID:  17024141     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Cardiothoracic (CT) ratio is a common measurement used to assess heart size in chest radiographs of pediatric patients, but no recent studies have analyzed the standards for CT ratios in very low birth weight (VLBW) infants. OBJECTIVE: The aim of this study was to provide improved standards for CT ratios measured from chest radiographs of VLBW (<1500 g) infants, and to compare CT ratios between small for gestational age (SGA) and appropriate for gestational age (AGA) infants in this population. DESIGN/METHODS: Among VLBW infants admitted to the Jacobi Medical Center NICU from 2002 to 2004, CT ratios were calculated from anteroposterior supine chest radiographs taken of 54 VLBW infants (18 SGA and 36 AGA group-matched on the basis of birthweight and sex) during the first 24 h of life. RESULTS: There were no significant differences between the two groups with respect to birthweight, sex, 1-min Apgar score, 5-min Apgar score, intubation status and degree of inspiration. Median GA of the SGA infants was significantly greater than the AGA infants (30 and 27 weeks, respectively; P<0.001). CT ratios among SGA infants were significantly larger than those among AGAs. Using the widest internal width of the bony thorax, the mean CT ratio among SGA and AGA infants was 0.523 and 0.479, respectively (P=0.00102). CONCLUSIONS: VLBW SGA infants have larger CT ratios than VLBW AGA infants, suggesting that existing standards for normal CT ratios may be inappropriate for use among SGA infants.
L J Wozniak; S A Hussain; H Goldman; I L Hand
Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2006-10-05
Journal Detail:
Title:  Journal of perinatology : official journal of the California Perinatal Association     Volume:  26     ISSN:  0743-8346     ISO Abbreviation:  J Perinatol     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2006-11-23     Completed Date:  2007-03-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8501884     Medline TA:  J Perinatol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  769-71     Citation Subset:  IM    
Department of Pediatrics, Division of Neonatology, Albert Einstein College of Medicine, Jacobi Medical Center, Bronx, NY 10461, USA.
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MeSH Terms
Gestational Age
Heart / anatomy & histology*,  radiography
Infant, Newborn
Infant, Very Low Birth Weight*
Organ Size
Radiography, Thoracic
Reference Values
Thorax / anatomy & histology*

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