When adjusting PEEP, increments of how many cmH2O are recommended?

• A. 0.5-1
• B. 2-5
• C. 6-8
• D. 8-12

Answer: (B)

Titrating PEEP is a stepwise process to recruit collapsed alveoli and improve oxygenation while avoiding overdistention and hemodynamic compromise. Using moderate increments of 2–5 cmH2O lets you observe a meaningful change in oxygenation and lung mechanics without risking sudden, large increases in intrathoracic pressure. Smaller steps (0.5–1 cmH2O) can delay reaching an effective PEEP, while larger steps (6–8 or 8–12 cmH2O) raise the risk of overdistention and reduced venous return, potentially causing instability. So, adjusting by 2–5 cmH2O provides a practical balance for safe, effective titration, with reassessment after each increment.