Table 4.
Recruited and over-distended pixels changed with PEEP titration between two groups
| Groups | Recruited pixels | Over-distended pixels |
|---|---|---|
| Nonresponders | ||
| PEEP 20 (n = 4) | 46 (30–79) | 26 (15–83) |
| PEEP 17 (n = 4) | 47 (29–67) | 27 (10–97) |
| PEEP 14 (n = 5) | 31 (22–103) | 29 (6–71) |
| PEEP 11 (n = 5) | 33 (20–93) | 37 (7–63) |
| PEEP 8 (n = 4) | 34 (19–80) | 40 (15–61) |
| PEEP 5 (n = 4) | 44 (23–69) | 37 (25–44) |
| Responders | ||
| PEEP 20 (n = 11) | 82 (66–127) | 26 (15–83) |
| PEEP 17 (n = 13) | 86 (56–121) | 37 (19–80) |
| PEEP 14 (n = 13) | 76 (46–107)* | 38 (10–65) |
| PEEP 11 (n = 12) | 80 (52–101) | 17 (5–54)†‡ |
| PEEP 8 (n = 11) | 84 (73–116) | 5 (3–35)†‡ |
| PEEP 5 (n = 9) | 51 (33–77)† | 8 (3–46) |
*P < 0.05, compared with PEEP 20 in the same group; †P < 0.05, compared with the neighboring upper PEEP in the same group; ‡P < 0.01, compared with PEEP 20 in the same group. PEEP: Positive-end expiratory pressure.