What is the ponderal index of a child with 2000 g and height 50 cm (AIIMS Nov 2014)
Ponderal index (PI) in neonate
a. Ponderal index has beln used as an indicator of fetal growth status, especially to assess, assymetrical IUGR
b. Ponderal index can be used to identify infants whose soft tissue mass is below normal for the stage of skeletal development.
c. The Ponderal index is calculated by multiplying the weight, grams by 100 and then dividing it by cube of length in cm.
a. A Ponderal index below the lOth percentile may be used to identi fuIUGR infants correctly.
b. A lob, neonatal pontkral index is defined ss less thsn 1 SD helow a mean 2'0'
c. PI is usually l*s tha, i in a""ym-Lfic growth fetarded baby and 2 or more in a baby who hds either normal Growth or hes slt tmetricd growth retatdation'
d. The PI ofthe babY in question is
e. That means the baby is having assymetic IUGR (PI < 2)'
f. Fetal ponderal index can alsi be calculated by USG examination and compared with neonatal PI- Fetal PI had been found to be pre6ictor of IUGR with the sensitivity and specifici ty of16.9 urd82o/o,respectively. Ifthe fetal PI is less than ISD, the fetal ard neonatal well-being is compromised'