mary tsao: journal: 8 pounds, 3 ounces?

2004 . . . 2003 2002

11.23.04

dr. nahum, an associate clinical professor in the department of obstetrics and gynecology at duke university medical center, has come up with this formula to determine birth weight prior to birth:

birth weight [g] = gestational age (days) x (9.38 + 0.264 x fetal sex + 0.000233 x maternal height [cm] x maternal weight at 26.0 weeks [kg] + 4.62 x 3rd-trimester maternal weight gain rate [kg/d]] x [number of previous births + 1])

here are some tips for performing the calculations:

perform all multiplications before the additions.

gestational age is the stage of your pregnancy in days, or days since the onset of your last normal menstrual period plus 14.

for fetal sex, use 1 for a boy, -1 for a girl, or 0 if sex is unknown.

based on the above, baby brother will weigh approximately 8 pounds, 3 ounces.