Patient selection: preterm neonate with respiratory distress, from 26 to < 35 weeks
Parameters:
(1) gestational age in weeks
(2) antenatal steroid therapy
(3) Apgar score at 1 minute
(4) hypothermia on admission
(5) Silverman score at 2 hours, from 0 to 10
|
Parameter
|
Finding
|
Points
|
|
gestational age
|
< 32 weeks
|
2
|
|
|
>= 32 weeks
|
0
|
|
antenatal steroid therapy
|
no
|
1
|
|
|
yes
|
0
|
|
Apgar score at 1 minute
|
<= 3
|
1
|
|
|
> 3
|
0
|
|
hypothermia
|
no
|
0
|
|
|
yes
|
1
|
|
Silverman score
|
<= 2
|
0
|
|
|
> 2
|
2
|
total score =
= SUM(points for all 5 parameters)
Interpretation:
• minimum score: 0
• maximum score: 7
• A score >= 4 was associated with surfactant administration.
value of X =
= (1.20922 * (score)) - 3.492112
probability of surfactant therapy =
= 1 / (1 + EXP((-1) * X))
