|
Overview :
The
expected survival in a low birthweight neonate can be estimated from clinical
findings shortly after birth. The survival estimate is intended to be more
accurate than the Apgar score alone.
Patient
population
• Premature
infants weighing 500 to 1,800 grams.
|
Parameter |
Finding |
Value |
|
number in family |
|
(siblings) + (parents) |
|
RDS
value |
respiratory distress
present |
1 |
|
|
respiratory distress
absent |
0 |
|
prenatal ultrasound
value |
ultrasound
performed |
1 |
|
|
ultrasound not
performed |
0 |
|
premature labor
value |
spontaneous premature
labor present |
1 |
|
|
spontaneous premature
labor absent |
0 |
|
birthweight AGA
value |
birthweight appropriate
for gestational age |
1 |
|
|
birthweight not
appropriate for gestational age |
0 |
|
convulsion value |
present |
1 |
|
|
absent |
0 |
A =
= 10.9755 -
(0.0024 * (birthweight in grams)) - (0.3077 * (number in family)) + (1.9809 *
(RDS value)) - (1.3486 * (prenatal ultrasound value)) + (1.333 * (premature
labor value)) - (1.2490 * (birthweight AGA value)) + (3.446 * (convulsion
value)) - (0.2617 * (gestational age in weeks)) - (0.1807 * (1 minute Apgar
score))
neonatal
survival index =
= 1 / (1 +
EXP(A))
|