Table 3. Lung Mechanics.
| Group | TLVbaseline | OLV15 | OLV30 | TLVend |
|---|---|---|---|---|
| Tidal volume (mL) | ||||
| Control | 494±88 | 424±98* | 413±81* | 505±82 |
| PEEP | 477±73 | 376±76* | 379±76* | 498±113 |
| AR | 513±104 | 404±104* | 403±109* | 491±97 |
| Ppeak (cm H2O) | ||||
| Control | 12.3±2.8 | 19.6±4.5* | 20.8±5.7* | 15.0±4.0* |
| PEEP | 12.8±2.0 | 22.1±3.0* | 23.0±3.2* | 18.1±2.6*† |
| AR | 12.8±2.3 | 21.9±5.0* | 23.1±5.3* | 18.6±3.2*† |
| Pmean (cm H2O) | ||||
| Control | 6.0±2.2 | 8.4±2.4* | 8.6±2.2* | 7.1±2.5* |
| PEEP | 6.0±1.6 | 12.4±2.0*† | 12.1±2.0*† | 10.6±2.0*† |
| AR | 5.6±1.8 | 12.8±1.7*† | 13.1±1.8*† | 11.1±2.3*† |
| Cdyn (mL/cm H2O) | ||||
| Control | 41.3±4.9 | 21.8±4.8* | 20.3±5.0* | 34.6±7.5* |
| PEEP | 42.1±11.7 | 27.4±5.6*† | 26.8±6.5*† | 45.4±7.9† |
| AR | 41.2±6.2 | 30.9±8.7*† | 29.1±8.2*† | 41.8±10.0† |
Ppeak, peak airway pressure; Pmean, mean airway pressure; Cdyn, dynamic lung compliance; TLVbaseline, 15 min into TLV; OLV15 and OLV30, 15 min and 30 min after OLV; TLVend, 10 min after TLV was re-initiated; PEEP, positive end-expiratory pressure; AR, alveolar recruitment.
Values are mean±SD.
*p<0.05 vs. TLVbaseline in each group, †p<0.05 vs. control group.