Neuroventilatory efficiency and extubation readiness in critically ill patients

Liu, Ling; Liu, Huogen; Yang, Yi; Huang, Yingzi; Liu, Songqiao; Beck, Jennifer; Slutsky, Arthur S; Sinderby, Christer; Qiu, Haibo

doi:10.1186/cc11451

Critical Care

Table 3 Extubation predictability for the measured variables

From: Neuroventilatory efficiency and extubation readiness in critically ill patients

				Cut-off point
	Time	AUC	P	for analyzed	Sensitivity	Specificity	Youden index
				variables
	T₁	0.750	0.004	24.170	0.686	0.706	0.392
	T₅	0.842	<0.001	24.070	0.686	0.882	0.568
NVE	T₁₀	0.815	<0.001	20.120	0.743	0.765	0.508
(ml/µV)	T₁₅	0.818	<0.001	33.620	0.600	1.000	0.600
	T₃₀	0.861	<0.001	25.670	0.714	0.929	0.643
	T_end	0.808	<0.001	22.210	0.771	0.824	0.595
	Mean	0.816		24.977	0.700	0.851	0.551
	T₁	0.692	0.026	1.154	0.714	0.647	0.361
	T₅	0.701	0.020	1.390	0.371	1.000	0.371
NME	T₁₀	0.716	0.026	1.180	0.615	0.786	0.401
(cm H₂O/µV)	T₁₅	0.720	0.023	1.133	0.692	0.786	0.478
	T₃₀	0.830	<0.001	0.879	0.914	0.667	0.581
	T_end	0.745	0.005	1.139	0.800	0.647	0.447
	Mean	0.734		1.146	0.684	0.756	0.440
	T₁	0.659	0.065	10.098	0.882	0.457	0.339
	T₅	0.726	0.009	17.050	0.647	0.714	0.361
EA_di	T₁₀	0.718	0.012	19.740	1.000	0.543	0.449
(µV)	T₁₅	0.718	0.013	9.655	1.000	0.486	0.486
	T₃₀	0.780	0.002	14.400	0.786	0.743	0.529
	T_end	0.743	0.005	14.410	0.706	0.743	0.449
	Mean	0.724		14.226	0.837	0.614	0.436
	T₁	0.681	0.036	88.660	0.588	0.800	0.388
	T₅	0.718	0.012	80.570	0.647	0.857	0.504
f/V_t	T₁₀	0.676	0.042	89.030	0.529	0.800	0.329
(breaths/min)/L	T₁₅	0.714	0.015	72.790	0.688	0.771	0.459
	T₃₀	0.716	0.019	64.540	0.786	0.629	0.415
	T_end	0.745	0.005	69.620	0.765	0.686	0.451
	Mean	0.708		77.535	0.667	0.757	0.424
	T₁	0.708	0.016	226.000	0.914	0.529	0.443
	T₅	0.713	0.013	293.000	0.886	0.588	0.474
V_t	T₁₀	0.718	0.011	308.000	0.829	0.529	0.358
(L)	T₁₅	0.745	0.005	302.000	0.943	0.626	0.569
	T₃₀	0.740	0.009	302.000	0.829	0.571	0.400
	Tend	0.732	0.007	302.000	0.829	0.588	0.417
	Mean	0.726		288.833	0.872	0.572	0.444
	T₁	0.645	0.106	6.714	0.893	0.471	0.364
	T₅	0.654	0.074	6.960	0.829	0.529	0.358
VE	T₁₀	0.677	0.040	7.165	0.829	0.529	0.358
(L/min)	T₁₅	0.729	0.009	6.470	0.943	0.500	0.443
	T₃₀	0.669	0.066	7.021	0.914	0.500	0.414
	T_end	0.682	0.034	7.020	0.914	0.529	0.443
	Mean	0.676		6.892	0.887	0.510	0.397
	T₁	0.666	0.055	26.240	0.588	0.829	0.417
	T₅	0.649	0.084	26.820	0.529	0.829	0.358
f	T₁₀	0.582	0.344	27.750	0.412	0.829	0.241
(breaths/min)	T₁₅	0.596	0.273	29.330	0.375	0.886	0.261
	T₃₀	0.600	0.278	27.570	0.500	0.771	0.271
	T_end	0.618	0.169	27.560	0.529	0.800	0.329
	Mean	0.619		27.545	0.489	0.824	0.313

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ISSN: 1364-8535

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