Cefazolin - Neonatal Dosing

25 mg/kg/dose IV q12h

PNA-days 0 - 7

25 mg/kg/dose IV q12h

PNA-days 8 +

25 mg/kg/dose IV q8h

Cardiac Surgery Prophylaxis

Age 0-7 days: 30 mg/kg/dose IV Q12H
Age >7 days: 30 mg/kg/dose IV Q8H