hacor_score: HACOR Score for NIV Failure

In cliot: Clinical Indices and Outcomes Tools

HACOR Score for NIV Failure

Description

Calculates the HACOR score to predict the likelihood of Non-Invasive Ventilation (NIV) failure in patients with hypoxemic respiratory failure. The score is based on Heart rate, Acidosis (pH), Consciousness (GCS), Oxygenation (PaO2/FiO2), and Respiratory rate. A score > 5 assessed 1 hour after initiation suggests a high risk of failure.

Usage

hacor_score(heart_rate, ph, gcs, pao2_fio2_ratio, respiratory_rate)

Arguments

heart_rate	Numeric. Heart rate in beats per minute. (>= 120 adds 1 point).
ph	Numeric. Arterial pH. (<7.25: 4 pts; 7.25-7.29: 3 pts; 7.30-7.34: 2 pts).
gcs	Numeric. Glasgow Coma Scale score. (<15 adds 10 points).
pao2_fio2_ratio	Numeric. PaO2/FiO2 ratio. (<=100: 6 pts; 101-125: 5 pts; 126-150: 4 pts; 151-175: 3 pts; 176-200: 2 pts).
respiratory_rate	Numeric. Respiratory rate in breaths per minute. (>45: 4 pts; 41-45: 3 pts; 36-40: 2 pts; 31-35: 1 pt).

Value

A list containing:

HACOR_Score	The calculated score (Range 0-25).
NIV_Failure_Probability	Estimated probability of NIV failure.
Recommendation	Clinical suggestion regarding intubation.

References

Duan J, Han X, Bai L, et al. Assessment of heart rate, acidosis, consciousness, oxygenation, and respiratory rate to predict noninvasive ventilation failure in hypoxemic patients. Intensive Care Med. 2017;43(2):192-199. doi:10.1007/s00134-016-4601-3

Examples

# Example 1: High Risk
# HR 130 (+1), pH 7.20 (+4), GCS 14 (+10), PF 120 (+5), RR 35 (+1)
# Score = 21
hacor_score(130, 7.20, 14, 120, 35)

# Example 2: Low Risk
# HR 90 (0), pH 7.40 (0), GCS 15 (0), PF 250 (0), RR 20 (0)
# Score = 0
hacor_score(90, 7.40, 15, 250, 20)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.