Sandbox

Weaning

criteria for Spontaneous Breathing Test (SBT)

• Respiratory Criteria

1. PaO2>= 60 mm hg ( FiO2<40-50,PEEP<5-8cm H2O)
2. PaCo2 normal or base line
3. Pt able to initiate inspiratory effort

• Cardiovascular Criteria

1. No evidence of myocardial ischemia
2. HR<140/min
3. BP normal without vasopressor or minimal vasopressor support
4. Adequate mental status :arousable/GCS.13

• Absence of correctable comorbid conditions

1. Patient is afebrile
2. No significant electrolytes abnormalities

Patient who will tolerate Weaning

the criteria that predict the patient tolerance to weaning are

1. Tidal volume :5-7 ml/Kg
2. respiratory rate is :10-18 per minute
3. total ventilation:5-6 L /min
4. RR/Vt ratio :40-50/L
5. MIP ( maximum inspiration pressure )between 90- to -120 cm H2O