Integrating serum ferritin and neutrophil-to-lymphocyte ratio with Sequential Organ Failure Assessment score improves mortality prediction in sepsis

Table 1 Sequential Organ Failure Assessment score

Organ system	0	1	2	3	4
Respiratory (mmHg)	PaO2/FiO2 ≥ 400	PaO2/FiO2 < 400	PaO2/FiO2 < 300	PaO2/FiO2 < 200 and ventilated	PaO2/FiO2 < 100 and ventilated
Coagulation (platelets 103/μL)	Platelets ≥ 150	Platelets < 150	Platelets < 100	Platelets < 50	Platelets < 20
Liver (mg/dL)	Bilirubin < 1.2	Bilirubin 1.2-1.9	Bilirubin 2.0-5.9	Bilirubin 6.0-11.9	Bilirubin ≥ 12.0
Cardiovascular	MAP ≥ 70 mmHg	MAP < 70 mmHg	Dopamine < 5 or dobutamine (any dose)	Dopamine 51-15 or epinephrine ≤ 0.1 or norepinephrine ≤ 0.1	Dopamine > 15 or epinephrine > 0.1 or norepinephrine > 0.1
CNS GCS Score	15	13-14	10-12	6-9	< 6
Renal	Creatinine < 1.2 mg/dL	Creatinine 12-1.9 mg/dL	Creatinine 20-3.4 mg/dL	Creatinine 35-4.9 mg/dL; urine output < 500 mL/day	Creatinine > 5 mg/dL; urine output < 200 mL/day

Catecholamine doses = μg/kg/minute for at least 1 hour; CNS: Central Nervous System; FiO₂: Fraction of inspired oxygen; GCS: Glasgow Coma Scale; MAP: Mean arterial pressure; PaO₂: Partial pressure of oxygen in arterial blood.