Patient selection: singleton newborn with placenta for umbilical cord blood banking
Goal: prediction of total number of nucleated cells in a cord blood unit (CBU)
Parameters:
(1) parity of the mother
(2) gestational age in weeks
(3) gender of the infant
(4) fetal weight in grams
(5) maternal weight in kilograms on admission
(6) maternal height in cm
|
Parameter
|
Finding
|
Points
|
|
parity of the mother
|
1
|
24.4
|
|
|
> 1
|
0
|
|
gender
|
male
|
0
|
|
|
female
|
8.7
|
points for gestational age in weeks from 33 to 43 weeks =
= (4.85 * (weeks)) - 160.05
points for infant weight from 2,000 to 5,000 grams =
= (0.03333 * (weight)) - 66.666
points for maternal weight from 50 to 150 kilograms =
= (0.37 * (weight)) - 18.5
points for maternal height from 140 to 190 cm =
= (-0.748 * (height)) + 142.12
total score =
= SUM(points for all 6 parameters)
Interpretation:
• minimum score: 0
• maximum score: 256
• The higher the score the greater the likelihood that the TNC count will be > 150 * 10^7.
|
Score
|
Probability of TNC Count > 150 * 10^7
|
|
< 109
|
< 10%
|
|
109 to 201
|
(0.00297 * ((score))^2) - (0.2497 * (score)) + 1.11
|
|
> 201
|
> 70%
|
