Effect of mechanical ventilation on intra-abdominal pressure in critically ill patients without other risk factors for abdominal hypertension: an observational multicenter epidemiological study

Annals of Intensive Care

Table 3 Ventilatory parameters and ventilation mode

Parameter	Total (n= 50)	CMV (n= 28)	PSV (n= 16)	ACV (n= 3)	CPAP (n= 3)	p ^a
RR (breath/min)	17.5 ± 4.5	16.9 ± 5.3	18.0 ± 3.1	20 ± 3.8	18.3 ± 4.2	0.399
Vmin (l/min)	9.4 ± 2.7	9.3 ± 3	9.7 ± 2	9.0 ± 1.8	9.2 ± 4.9	0.503
Vt (ml/kg)	8.1 ± 2.2	8.0 ±1.7	8.8 ± 3.1	7.1 ± 1.1	6.7 ± 0.8	0.116
Ppeak (cmH₂O)	24.0 ± 11.7	24.4 ± 11.7	25.5 ± 13.2	20.6 ± 4.7	15.6 ± 6.6	0.108
Pplateau (cmH₂O)	13.1 ± 8.7	14.3 ± 10.5	12.0 ± 5.8	13.0 ± 6.2	7.6 ± 0.5	0.123
PEEP (cmH₂O)	2.1 ± 2.5	2.2 ± 2.4	2.0 ± 2.7	2.7 ± 2.5	1.3 ± 2.3	0.417
SC (ml/cmH₂O)	79.3 ± 57.8	79.1 ± 59.3	79.3 ± 59.4	75.3 ± 77.6	85.4 ± 41.6	0.548
DC (ml/cmH₂O)	32.0 ± 21.6	32.7 ± 24.7	30.4 ± 18.0	27.0 ± 8.9	39.3 ± 26.6	0.548

^aMann-Whitney U test. CMV, controlled mechanical ventilation; PSV, pressure support ventilation; ACV, assisted/controlled ventilation; CPAP, continuous positive airway pressure; RR, respiratory rate; Vmin, minute volume; Vt, tidal volume; Ppeak, peak pressure; Pplateau, plateau pressure; PEEP, positive end-expiratory pressure; SC, static compliance; DC, dynamic compliance.