Table 2.

Comparisons of relevant indexes of mechanical ventilation for patients in two groups before and after treatment (mean ± standard deviation)

Groups	Time	Cases	Static lung compliance (mL/cm H2O)	Dynamic lung compliance (mL/cm H2O)	Plateau pressure (mmHg)	Peak airway pressure (mmHg)	PEEP (cm H2O)
Treatment group	Before treatment	25	23.46±6.5	22.71±5.7	26.61±4.5	35.62±6.5	10.6±3.7
	24 h after treatment	25	25.29±4.7	24.53±4.5	23.18±5.4**	33.58±5.1	8.7±3.6
	48 h after treatment	25	29.66±6.3*	28.87±5.1*	21.89±4.3**	30.47±5.4**	6.8±3.1**
	72 h after treatment	25	32.71±5.8*	31.36±4.2*	20.69±4.9**	28.78±5.0**	4.5±2.3*
Control group	Before treatment	28	22.87±7.1	22.82±4.8	25.83±5.7	34.53±7.4	10.5±3.5
	24 h after treatment	28	24.18±5.2	23.68±5.1	24.64±4.6	33.82±4.3	8.9±3.2
	48 h after treatment	28	26.29±5.1	25.14±5.2	23.49±4.8	32.71±5.0	7.8±2.7
	72 h after treatment	28	28.38±4.8**	26.41±3.6	22.82±4.1**	31.66±3.6	7.1±2.1

Notes: Comparing the same time points in the control group,

^*P<0.05; comparing with the same group before treatment,

^**P<0.05.

Abbreviations: PEEP, positive end-expiratory pressure; h, hours.