Table 1.

Criteria and clinical risk factors for nosocomial bacterial infection.

Systems	Clinical signs and risk factors
Respiratory	- Tachypnea - Dyspnea - Increased need of ventilatory supports or oxygen requirements - Apnea
Hemodynamics	- Gray color - Paleness or CRT>3s - Tachycardia (HR>180 beats / min) - Bradycardia (HR <100 beats / min) - High blood pressure, or need for inotropic therapy
Digestive	- Vomiting - Abdominal distension - Increased gastric residuals - Hepatomegaly
Neurological	- Lethargy - Hypotonia or hypertonia - Irritability
Thermoregulation	- Hypothermia - Hyperthermia
Metabolic - biological -	- Hyperglycemia - Metabolic acidosis - Leukopenia (<5,000 cells /mm3) or leukocytosis (> 20,000 cells/mm3) - Thrombocytopenia
Risk factors	- Endotracheal tube - Central venous catheter - Parenteral nutrition - Presence of a nasogastric tube - Presence of a urinary catheter - Presence of ventricular derivation catheters - Postnatal corticosteroids - Pre-surgery