HACOR (heart rate, acidosis, consciousness, oxygenation, and respiratory rate) Score accurately predicts NIV failure in patients with hypoxemic respiratory failure. This app help clinicians effortlessly calculate risk of NIV failure in fews steps. It consist of HACOR score itself and PF ratio calculator.

Reference:
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 43, 192–199 (2017). https://doi.org/10.1007/s00134-016-4601-3