cliot (version 1.0.0)

func_ich_score: FUNC Score for ICH Functional Outcome

Description

Calculates the FUNC Score to predict the probability of functional independence (GCS >= 4) at 90 days in patients with primary intracerebral hemorrhage (ICH). The score (0-11) evaluates ICH volume, age, location, GCS, and pre-ICH cognitive status. Higher scores indicate a better prognosis.

Usage

func_ich_score(ich_volume_cm3, age, location, gcs, cognitive_impairment_pre_ich)

Value

A list containing:

FUNC_Score

The calculated score (Range 0-11).

Prob_Functional_Independence_90_Day

Estimated probability of achieving functional independence at 90 days.

Arguments

ich_volume_cm3

Numeric. Volume of the hematoma in cm^3 (often calculated via ABC/2 method). <30: 4 pts. 30-60: 2 pts. >60: 0 pts.

age

Numeric. Patient age in years. <70: 2 pts. 70-79: 1 pt. >=80: 0 pts.

location

String. Location of the hemorrhage. Options: "lobar" (2 pts), "deep" (1 pt), "infratentorial" (0 pts).

gcs

Numeric. Glasgow Coma Scale score on admission. >=9: 2 pts. <=8: 0 pts.

cognitive_impairment_pre_ich

Numeric (0 or 1). Presence of cognitive impairment prior to the ICH. (1 = Yes: 0 pts, 0 = No: 1 pt).

References

Rost NS, Smith EE, Chang Y, et al. Prediction of functional outcome in patients with primary intracerebral hemorrhage: the FUNC score. Stroke. 2008;39(8):2304-2309. doi:10.1161/STROKEAHA.107.512202

Examples

# Example 1: Good Prognosis
# Vol 15 (<30 -> 4), Age 60 (<70 -> 2), Lobar (2), GCS 14 (2), No impairment (1)
# Score = 11
func_ich_score(15, 60, "lobar", 14, 0)

# Example 2: Poor Prognosis
# Vol 40 (30-60 -> 2), Age 82 (0), Deep (1), GCS 7 (0), Impairment Yes (0)
# Score = 3
func_ich_score(40, 82, "deep", 7, 1)