Increasing abdominal pressure with and without PEEP: effects on intra-peritoneal, intra-organ and intra-vascular pressures

Table 2 Intraperitoneal, intraorgan and intravascular pressures (mm Hg) during the experiment.

	Baseline	PEEP	PEEP+external abdominal pressure	External abdominal pressure	End of experiment	P*
Intraperitoneal pressure	6 ± 1	6 ± 1	9 ± 2^##	9 ± 2^##	5 ± 1	*<0.001*
Urinary bladder pressure	6 ± 2	7 ± 2	11 ± 2^##	10 ± 2^##	6 ± 1	*<0.001*
Intragastric pressure	6 ± 2	8 ± 2	11 ± 2^##	10 ± 2^##	6 ± 2	*<0.001*
Inferior vena cava pressure	11 ± 4	12 ± 3^#	15 ± 4^#	14 ± 3^#	11 ± 3	*<0.001*
Diastolic pulmonary artery pressure	14 ± 5	16 ± 4^#	17 ± 5	16 ± 5^&	14 ± 6	*0.003*

Values are mean ± SD.
*: ANOVA For Repeated Measurements. Paired T Test, vs. Baseline, ^#P ≤ 0.01, ^##P ≤ 0.001; External Abdominal Pressure +PEEP vs. -PEEP, ^&p = 0.007.

ISSN: 1471-230X