Decreased substrate availability
Intra-uterine growth retardation
Glycogen storage disease
Inborn errors of metabolism (e.g., fructose intolerance)
Prematurity
Prolonged fasting without IV glucose
Hyperinsulinemia:
Infant of diabetic mother
Islet cell hyperplasia
Erythroblastosis fetalis
Exchange transfusion
Beckwith-Wiedemann Syndrome
Maternal beta-mimetic tocolytic agents
?High? umbilical arterial catheter
Abrupt cessation of IV glucose
Other endocrine abnormalities:
Pan-hypopituitarism
Hypothyroidism
Adrenal insufficiency
Increased glucose utilization:
Cold stress/hypothermia
Increased work of breathing
Sepsis
Perinatal asphyxia
Miscellaneous conditions:
Polycythemia
Congenital heart disease
CNS abnormalities
Intra-uterine growth retardation
Glycogen storage disease
Inborn errors of metabolism (e.g., fructose intolerance)
Prematurity
Prolonged fasting without IV glucose
Infant of diabetic mother
Islet cell hyperplasia
Erythroblastosis fetalis
Exchange transfusion
Beckwith-Wiedemann Syndrome
Maternal beta-mimetic tocolytic agents
?High? umbilical arterial catheter
Abrupt cessation of IV glucose
Pan-hypopituitarism
Hypothyroidism
Adrenal insufficiency
Cold stress/hypothermia
Increased work of breathing
Sepsis
Perinatal asphyxia
Polycythemia
Congenital heart disease
CNS abnormalities
Too much insulin:
Idiopathic, asphyxia, rhesus diagnoses, Beckwith-Weiderman, Nesiodoblastosis (autosomal recessive hyperinsulinism)
Not enough anti-insulin:
Hypopituitarism, adrenal hyperplasia
Inborn errors of metabolism
Glycogen storage disease, fatty oxidation errors
Idiopathic, asphyxia, rhesus diagnoses, Beckwith-Weiderman, Nesiodoblastosis (autosomal recessive hyperinsulinism)
Hypopituitarism, adrenal hyperplasia
Glycogen storage disease, fatty oxidation errors
Neonatal hypoglycemia
Decreased substrate availability
Non-neonatal hypoglycemia 
Intra-uterine growth retardation
Neonatal jaundice
Glycogen storage disease
Neonatal abstinence syndrome
Inborn errors of metabolism 