Patient selection: Grade 3, 4 or 5 liver trauma
Types of complications:
(1) bleeding
(2) biliary complications (bile peritonitis, biloma, etc.)
(3) intra-abdominal infection
(4) abdominal compartment syndrome
Parameters:
(1) liver injury grade
(2) number of units of packed red blood cells (PRBCs) transfused in first 24 hours after injury
|
Number of Units PRBCs
|
Grade 3
|
Grade 4
|
Grade 5
|
|
0
|
3%
|
14%
|
35%
|
|
5
|
4%
|
19%
|
43%
|
|
10
|
6%
|
26%
|
52%
|
|
15
|
8%
|
33%
|
61%
|
|
20
|
11%
|
42%
|
69%
|
|
25
|
14%
|
50%
|
76%
|
|
30
|
20%
|
60%
|
83%
|
|
35
|
26%
|
68%
|
87%
|
|
40
|
33%
|
75%
|
91%
|
|
45
|
42%
|
81%
|
93%
|
|
50
|
51%
|
86%
|
95%
|
from Figure 3, page 456
If this data is evaluated in MINITAB:
probability of complications in Grade 3 injury =
= (0.000198 * ((units of blood)^2)) - (0.000465 * (units of blood)) + 0.03685
probability of complications in Grade 4 injury for 0 - 25 units of blood =
= (0.000164 * ((units of blood)^2)) + (0.01052 * (units of blood)) + 0.1375
probability of complications in Grade 4 injury for 25 to 50 units of blood =
= (- 0.000236 * ((units of blood)^2)) + (0.03196 * (units of blood)) - 0.150
probability of complications in Grade 5 injury =
= (((units of blood)^2)) + (0.02158 * (u- 0.000183 *nits of blood)) + 0.3345
