AUC	Area under the curve
BP	Blood pressure
CI	Confidence interval
CPT	Core-peripheral temperature
CRIB	Clinical Risk Index for Babies
CRT	Capillary refill time
GA	Gestational age
IQR	Interquartile range
IVC	Inferior vena cava
IVH	Intraventricular hemorrhage
MBI	Major brain injury
NICU	Neonatal Intensive Care Unit
NIRS	Near-infrared spectroscopy
PDA	Patent ductus arteriosus
MAP	Mean arterial blood pressure
PPHN	Persistent pulmonary hypertension of the newborn
RCT	Randomized controlled trial
SVC	Superior vena cava
TCI	Transient circulatory instability
TnECHO	functional echocardiography