Table 2.

Hypercapnic breathing (n = 3)

	Intact	Open	Intact versus Open
PIIA area
Diaphragm	0.006 ± 0.00	0.005 ± 0.00	P < 0.001**
Left PS	0.26 ± 0.00	0.21 ± 0.00	P < 0.001**
Right PS	0.03 ± 0.00	0.018 ± 0.00	P < 0.001**
PIIA time
Diaphragm	0.41 + 0.02	0.22 + 0.02	P < 0.001**
Left PS	0.47 + 0.01	0.40 + 0.01	P < 0.001**
Right PS	0.49 + 0.03	0.37 + 0.03	P < 0.001**
PIIA area/Total inspiratory area
Diaphragm	0.348 ± 0.05	0.295 ± 0.02	P = 0.014*
Left PS	0.372 ± 0.03	0.375 ± 0.02	P = 0.89
Right PS	0.379 ± 0.03	0.352 ± 0.02	P = 0.281
PIIA time/Total inspiratory time
Diaphragm	0.328 ± 0.05	0.236 ± 0.01	P = 0.009*
Left PS	0.379 ± 0.03	0.359 ± 0.01	P = 0.4
Right PS	0.388 ± 0.03	0.337 ± 0.02	P = 0.063
Delta Pes	10.5 ± 0.92	14.09 ± 0.72	P = 0.003*
Peak amplitude
Diaphragm	0.030 ± 0.01	0.028 ± 0.01	P = 0.189
Left PS	0.076 ± 0.01	0.096 ± 0.01	P = 0.003 *
Right PS	0.116 ± 0.01	0.104 ± 0.02	P = 0.384

Comparison between intact versus open abdominal trials under hypercapnic conditions. The numbers represent mean ± SEM. *denotes P‐value <0.05, **indicates P‐value <0.001.