Discharged with shared parental decision making, CPR instructions, and close outpatient follow-up
Admission in most cases
Especially for:
<30 weeks preterm
Ill-appearing or abnormal vitals (including pulse ox)
Bronchiolitis or pertussis with apnea
>1<unk>  in past 24hr or multiple BRUE
Abnormalities in past medical history
Prolonged central apnea >20 seconds
Need for resuscitation
Family history of SIDS
Brief resolved unexplained event
The differential diagnosis is extensive, and although a broad workup is often started in the ED including evaluation for sepsis, occult infection, and metabolic disorders, a cause is infrequently found[2]
Deterioration after intubation
Idiopathic 
Headache during pregnancy
GERD
Acute chest pain
Seizure