Normal aortic root dimensions in premature infants

Area of Science:

• Pediatric Cardiology
• Neonatal Medicine
• Diagnostic Imaging

Background:

• Establishing normal reference ranges for cardiovascular structures is crucial for diagnosing congenital heart disease and monitoring growth in neonates.
• Premature infants present unique physiological challenges, necessitating specific dimensional standards.

Purpose of the Study:

• To define normal aortic root dimensions in premature infants based on gestational age and weight.
• To provide reference data for the accurate assessment of aortic root size in this vulnerable population.

Main Methods:

• Retrospective analysis of 334 sequential echocardiograms.
• Inclusion of 111 premature infants with birth weights ranging from 600 to 2500 grams.
• Measurement of aortic root diameter using standard echocardiographic techniques.

Main Results:

• A statistically significant increase in aortic root diameter was observed with increasing infant weight.
• Aortic root diameter ranged from 0.53 cm ± 0.04 cm for infants weighing 600-900 g.
• Aortic root diameter reached 0.80 cm ± 0.08 cm for infants weighing 2200-2500 g.

Conclusions:

• Normal aortic root dimensions in premature infants correlate directly with body weight.
• These findings establish essential reference values for echocardiographic evaluation of premature neonates.
• This data aids in the early detection of aortic root abnormalities in high-risk infant populations.