Patient selection: gynecologic surgery
Parameters:
(1) body mass index (BMI)
(2) planning laparotomy
(3) planning myomectomy
(4) planning a procedure for possible malignancy
(5) planning hysteroscopy
(6) history of uterine fibroids (leiomyomas)
(7) history of hypertension
(8) history of heavy menstrual bleeding
(9) history of ovarian cancer
(10) history of previous laparotomy
(11) parity
(12) preoperative hemoglobin in g/dL
points for BMI from 10 to 30 kg per square meter =
= 38.13 - (1.26 * (BMI))
points for BMI from 30 to 90 kg per square meter =
= (0.42 * (BMI)) - 12.6
points for hemoglobin from 6 to 20 g/dL=
= 142.86 - (7.43 * (hemoglobin))
|
Parameter
|
Finding
|
Points
|
|
planning laparotomy
|
no
|
0
|
|
|
yes
|
34.6
|
|
planning myomectomy
|
no
|
0
|
|
|
yes
|
18.9
|
|
planning for possible malignancy
|
no
|
0
|
|
|
yes
|
12.1
|
|
planning hysteroscopy
|
no
|
0
|
|
|
yes
|
28,3
|
|
history of fibroids
|
no
|
0
|
|
|
yes
|
5.2
|
|
history of hypertension
|
no
|
0
|
|
|
yes
|
12.1
|
|
heavy menstrual bleeding
|
no
|
0
|
|
|
yes
|
15.7
|
|
history of ovarian cancer
|
no
|
0
|
|
|
yes
|
17.3
|
|
history of previous laparotomy
|
no
|
0
|
|
|
yes
|
17.8
|
|
parity
|
0
|
3.7
|
|
|
1
|
12.6
|
|
|
3
|
0
|
|
|
4
|
1.6
|
|
|
9
|
5.8
|
|
|
other
|
2.1 to 8.6 (using 5)
|
where:
• The nomogram for parity is unclear with some values unlabelled.
total score =
= SUM(points for all 12 parameters)
Interpretation:
• minimum score: 0
• maximum score: about 300
|
Total Score
|
Probability of Transfusion After Surgery
|
|
< 145
|
< 2%
|
|
145 to 247
|
(0.006756 * ((points)^2)) - (1.847 * (points)) + 126.7
|
|
> 247
|
> 80%
|
