Ventilator Management

Question 1

PaO2/FiO2 (P/F ratio)

Answer 1

–<300 = Mild ARDS
–<200 = Moderate
–<100 = Severe

Question 2

ARDS Criteria

Answer 2

• P/F < 300
• CXR – bilateral diffuse infiltrates
• R/O CHF
– BNP > 100 suggestive of CHF

Question 3

ARDS: Ventilator Management

Answer 3

Calculate Predicted Body Weight (PBW)
• M= 50 + 2.3 [Ht inches – 60]
• F = 45.5 + 2.3 [Ht inches – 60]
• Set mode
• Set Vt
• Reduce Vt 
• Set initial rate
• Adjust rate and Vt

Question 4

ARDS: Oxygenation Management

Answer 4

• Goal: 55 – 80 mmHg or SpO2 88-95%
• Adjust PEEP (minimum 5 cwp)
-Lower PEEP/Higher Fi02
-Higher PEEP/ Lower FiO2