5. PREDICTOR OF WEANING
• RSBI = f (breath/minute)
• VT (L)
• Patient with RSBI <100 can be extubated successfully
RSBI
(Rapid Shallow
Breathing Index)
• Avoid severe hypoxemia (PaO2 less than 55 in FiO2
40%)
• PaO2/FiO2 ratio sometimes can be used
Blood Gas Analysis
• Normal Minute ventilation (VE) is ±6 L/menit
Minute Volume
6. Predictor Value of
Successful Mechanical
Ventilator Weaning
based on Minute
Volume, Maximal
Inspiration Pressure,
and RSBI
7. • Pimax less negative than -30 cmH2O can be successfully
weaned
Maximal
Inspiration
Pressure (Pimax)
• Normal Capacity is about 65 – 75 mL/ kg
• If 10 ml/kg or more can be as predictor of weaning
Vital Capacity
• Pressure that comes from first 0.1 second of oclusion
airway
• Normal value that can be predictor of weaning is 3.4 – 6.0
cmH2O
Airway occlusion
pressure
17. CONCLUSION
WEANING is decrease mechanical ventilator assistance to train patient
breaths by him/herself
Consider whether patient is ready or not to start weaning
3 SBT strategies: SIMV, PSV, T-Piece/ CPAP
Weaning failure, try to screen and fix the problem, then try SBT for next 24
hours