Table 5.
Four lung zone part difference with PEEP titration
| Groups | First zone | Second zone | Third zone | Forth zone | ||||
|---|---|---|---|---|---|---|---|---|
| Recruited pixels | Over-distended pixels | Recruited pixels | Over-distended pixels | Recruited pixels | Over-distended pixels | Recruited pixels | Over-distended pixels | |
| Nonresponders | ||||||||
| PEEP 20 (n = 4) | 0 (0–17) | 15 (4–37) | 10 (1–16) | 14 (3–66) | 19 (10–47) | 4 (1–16) | 8 (5–23) | 0 (0–0) |
| PEEP 17 (n = 4) | 0 (0–18) | 19 (5–25) | 10 (1–17) | 5 (0–61) | 19 (12–43) | 4 (1–15) | 6 (4–15) | 0 (0–0) |
| PEEP 14 (n = 5) | 2 (0–21) | 17 (3–24) | 14 (3–29) | 9 (1–44) | 13 (8–52) | 3 (2–5) | 1 (0–14) | 0 (0–1) |
| PEEP 11 (n = 5) | 4 (0–21) | 16 (2–23) | 11 (4–24) | 15 (2–37) | 12 (5–49) | 4 (2–6) | 0 (0–13) | 0 (0–1) |
| PEEP 8 (n = 4) | 3 (0–18) | 14 (4–22) | 8 (5–14) | 17 (6–37) | 14 (2–50) | 4 (2–7) | 0 (0–14) | 0 (0–1) |
| PEEP 5 (n = 4) | 5 (1–10) | 10 (8–19) | 7 (2–14) | 15 (10–24) | 8 (2–35) | 4 (0–9) | 0 (0–12) | 0 (0–2) |
| Responders | ||||||||
| PEEP 20 (n = 11) | 0 (0–7) | 14 (7–33) | 22 (14–48) | 10 (1–36) | 45 (26–72) | 2 (0–6) | 15 (1–23) | 0 (0–3) |
| PEEP 17 (n = 13) | 0 (0–5) | 10 (5–32) | 25 (8–41) | 17 (2–41) | 45 (25–64) | 0 (0–6) | 11 (2–24) | 0 (0–7) |
| PEEP 14 (n = 13) | 0 (0–5) | 7 (3–34) | 22 (9–39) | 16 (0–30) | 31 (15–57)§|| | 0 (0–6) | 11 (0–20) | 0 (0–5) |
| PEEP 11 (n = 12) | 1 (0–14) | 6 (2–13)* | 29 (13–44) | 6 (0–14)*† | 28 (13–50)§,|| | 0 (0–6) | 9 (2–17) | 0 (0–2) |
| PEEP 8 (n = 11) | 3 (0–18)* | 3 (1–11)*† | 31 (18–49)‡ | 0 (0–12)*†‡ | 22 (9–48)*† | 0 (0–4) | 7 (0–14) | 0 (0–1) |
| PEEP 5 (n = 9) | 8 (0–14)*† | 3 (1–9)* | 26 (17–44)‡ | 1 (0–13) | 11 (4–16)*† | 4 (0–8) | 3 (0–7) | 0 (0–7) |
PEEP: Positive-end expiratory pressure.