NAS	Neonatal Abstinence Syndrome
NICU	Neonatal Intensive Care Unit
AST	Aspartate aminotransferase
ALT	Alanine aminotransferase
CRP	C-reactive protein
WBC	White blood cell
PLT	Platelet
MPV	Mean platelet volume
PCT	Plateletcrit
NLR	Neutrophil-to-lymphocyte ratio
ECHO	Echocardiography
TFUS	Transfontanel ultrasonography
PPV	Positive pressure ventilation
PROM	Premature rupture of membranes
CMV	Cytomegalovirus
HIV	Human immunodeficiency virus
HBsAg	Hepatitis B surface antigen