The Use of Catheter Mount Will Result in More Reliable Carbon Dioxide Monitoring under Fluid Exposing Conditions

Table 2

ETCO₂ by using pDCCM and dDCCM.

Capnometer	Water sprays	ETCO2 (mmHg)
		†pDCCM	‡dDCCM	Mean difference	§p-value
		(n=25)	(n=25)
Mainstream	0 ml	34.5 ± 6.5	31.9 ± 4.9	-2.5 ± 5.2	0.09
	5 ml	19.0 ± 23.5	29.5 ± 7.0	10.4 ± 24.1	<0.001
	10 ml	21.2 ± 24.5	33.8 ± 14.8	12.5 ± 28.4	<0.001
Microstream	0 ml	32.5 ± 3.7	32.7 ± 4.3	0.2 ± 2.5	0.83
	5 ml	13.9 ± 15.2	30.5 ± 5.1	16.6 ± 16.7	<0.001
	10 ml	11.4 ± 14.4	29.9 ± 4.3	18.5 ± 16.0	<0.001

Values are given as mean ± SD.
†pDCCM, proximal capnometer of direct connect catheter mount
‡dDCCM, distal capnometer of direct connect catheter mount
§Calculated by repeated measures ANOVA.
Abbreviations: dDCCM, distal capnometer of direct connect catheter mount; ETCO₂, End-tidal carbon dioxide; pDCCM, proximal capnometer of direct connect catheter mount; SD, standard deviation