Repeated open endotracheal suctioning causes gradual desaturation but does not exacerbate lung injury compared to closed endotracheal suctioning in a rabbit model of ARDS

Table 1 Baseline characteristics

	OS group	CS group	Control group	HC group	p value
	n = 13	n = 13	n = 7	n = 3	p value
Body weight, kg	3.1 ± 0.3	3.0 ± 0.3	2.8 ± 0.2	3.0 ± 0.2	0.169
Lavage, times	2.9 ± 0.5	3.0 ± 0.6	3.0 ± 0.6	Non	0.929
MAP, mmHg	131 ± 16	118 ± 13	116 ± 7	119 ± 2	0.063
HR, beats /min	236 ± 65	217 ± 48	280 ± 68	213 ± 183	0.349
RR, breaths /min	23.5 ± 5.6	22.7 ± 6.2	22.3 ± 2.7	24.0 ± 1.0	0.950
P/F ratio	460 ± 51	477 ± 54	427 ± 36	412 ± 38	0.085
PaCO₂, mmHg	44.4 ± 4.6	46.1 ± 5.5	40.6 ± 10.2	44.5 ± 4.3	0.363

OS, open endotracheal suctioning; CS closed endotracheal suctioning; HC healthy control; MAP, mean arterial pressure; HR, heart rate; RR, respiration rate; P/F ratio, PaO₂/FIO₂ ratio. Values are mean ± SD.

ISSN: 1471-2253