Geriatric Trauma Outcome Score III (GTOS III)

Description

Ross et al modified the Geriatric Trauma Outcome Score (GTOS) with development of the GTOS III score. This can help to identify a patient who may require more aggressive management. The authors are from Carolinas Medical Center in Charlotte and University of Texas Southwestern Medical Center in Dallas.

Patient selection: age >= 65 years of age

Outcome: 1-year mortality

Parameter:

(1) age in years

(2) ISS

(3) transfusion of a blood product within the first 24 hours

(4) Glasgow coma scale (GCS)

(5) discharge (adverse if to skilled nursing facility, long-term acute care hospital or inpatient hospice)

Parameter	Finding	Points
age in years		age
ISS		0.806 * (ISS)
transfusion	no	0
	yes	5.55
GCS	low (<= 10)	21.69
	not low (11-15)	0
discharge	adverse	34.36
	not adverse	0

GTOSIII =

= SUM(points for all 5 parameters)

Interpretation:

• minimum score: 65

• maximum score: depends on the ISS and age

• A score above 184 is associated with a very high mortality rate.

X =

= (0.06147 * (score)) - 8.5552

probability of 1-year mortality =

= 1 / (1+EXP((-1) * X))

Performance:

• The area under the ROC curve is 0.88.

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Geriatric Trauma Outcome Score III (GTOS III)

Description

Specialty