showed a trendP=0.161
Results Experiment 1 (evaluation of the influence of PGA felt thickness) ( Figure 3A ) The SBBP required to cause air leakage from the covered pleural defect in the swine lung in Group 1 (PGA0.15) (57.1±20 cmH 2 O) was significantly higher than that in Group 3 (PGA0.5) (24.9±4.5 cmH 2 O) (P=0.012) and showed a trend toward higher pressure than Group 2 (PGA0.3) (37.7±11 cmH 2 O) (P=0.161).