Treatment should consist of vitamin K1 therapy (loading dose of 5 mg/kg s/c then 2.5 mg/kg/day p/o), plus supportive care including oxygen supplementation if tachypneic or dyspneic, and whole blood or plasma | Treatment should consist of vitamin K1 therapy (loading dose of 5 mg/kg s/c then 2.5 mg/kg/day p/o), plus supportive care including oxygen supplementation if tachypneic or dyspneic, and whole blood or plasma |