Table 1.

. EOSC classification of infant's clinical presentation.

Clinical exam	Description
Clinical illness	1. Persistent need for NCPAP/HFNC*/mechanical ventilation (outside of the delivery room) 2. Hemodynamic instability requiring vasoactive drugs 3. Neonatal encephalopathy/perinatal depression - Seizure - Apgar Score at 5 min <5 4. Need for supplemental O2 ≥2 h to maintain oxygen saturations >90% (outside of the delivery room)
Equivocal	1. Persistent physiologic abnormality ≥4 hrs - Tachycardia (HR ≥160) - Tachypnea (RR ≥60) - Temperature instability (≥100·4˚F or <97·5˚F) - Respiratory distress (grunting, flaring, or retracting) not requiring supplemental O2 2. Two or more physiologic abnormalities lasting for ≥2 hrs - Tachycardia (HR ≥160) - Tachypnea (RR ≥60) - Temperature instability (≥100·4˚F or <97·5˚F) - Respiratory distress (grunting, flaring, or retracting) not requiring supplemental O2
Well appearing	No persistent physiologic abnormalities

Abbreviations: NCPAP: nasal continuous positive airway pressure, HFNC: high flow nasal cannula.