Measurement of ventricular size in term and preterm infants.

Real time ultrasonography was done in neonates to establish the norms for ventricular size and to see if there is a correlation between ventricle size and gestational age. A total of 153 normal infants admitted to our nursery after September, 1989 were taken up for the study. First ultrasound was performed within six days of birth. Sonography was done with 3.5 MHz transducer through anterior and lateral fontanelle. Results revealed that there is a significant difference in the mean value of falx to lateral wall of the cortex, ventricular index and ratio (VI/FC) of preterm and term infants. The ventricular size of small for gestational age infants is significantly different from appropriate gestational age infant of corresponding gestational ages. The percentile chart of VI for Indian infants is comparable to that of western infants.