Penetrating Trauma Index (PTI) and the Composite Prognostic Score (PS) of Ivatury et al

 

Parameters:

(1) Penetrating Thoracic Trauma Index (PTTI)

(2) Penetrating Abdominal Trauma Index (PATI)

(3) Physiologic Index (PI)

 

Penetrating Trauma Index = PTI =

= (PTTI) + (PATI)

 

composite Prognostic Score = PS =

= (PTI) + (PI) =

= (PTTI) + (PATI) + (PI)

 

Interpretation:

• minimum PTI: 0

• maximum PTI: 290

• minimum PS: 5

• maximum PS: 310

• The higher the indices the worse the prognosis.

Prognostic Score	Outcome
< 23	all survive
23 to 43	some die
44 to 62	most die
> 62	all die

from Figure 5, page 64