The epidemiology and clinical outcomes of ventilator-associated events among 20,769 mechanically ventilated patients at intensive care units: an observational study

Table 1 The rates of ventilator-associated events by ICU units, discharge date and days from the start of ventilation

	EMV	Ventilator-days	VAC-plus			IVAC-plus			PVAP-plus			Proportion of IVACs: VACs	Proportion of PVAPs: VACs
	EMV	Ventilator-days	Event episodes	Per 100 EMV	Per 1000 ventilator-days	Event episodes	Per 100 EMV	Per 1000 ventilator-days	Event episodes	Per 100 EMV	Per 1000 ventilator-days	Proportion of IVACs: VACs	Proportion of PVAPs: VACs
Overall	21,723	112,679	1882	8.66	16.7	721	3.32	6.4	185	0.85	1.64	0.38	0.1
Type of ICU
GICU	5050	38,638	656	12.99	16.98	243	4.81	6.29	75	1.49	1.94	0.37	0.11
NICU	2291	18,322	392	17.11	21.4	173	7.55	9.44	40	1.75	2.18	0.44	0.1
RICU	1492	16,081	200	13.4	12.44	77	5.16	4.79	22	1.47	1.37	0.39	0.11
SICU	5288	20,994	498	9.42	23.72	161	3.04	7.67	13	0.25	0.62	0.32	0.03
TICU	7602	18,644	136	1.79	7.29	67	0.88	3.59	35	0.46	1.88	0.49	0.26
Discharge date
2015.4–2016.3	5924	29,123	480	8.1	16.48	197	3.33	6.76	49	0.83	1.68	0.41	0.1
2016.4–2017.3	5776	29,083	494	8.55	16.99	190	3.29	6.53	43	0.74	1.48	0.38	0.09
2017.4–2018.3	5694	30,695	490	8.61	15.96	179	3.14	5.83	51	0.9	1.66	0.37	0.1
2018.4–2018.12	4329	23,778	418	9.66	17.58	155	3.58	6.52	42	0.97	1.77	0.37	0.1
The days from the start of ventilation
3–7	21,723	68,910	1285	5.92	18.65	474	2.18	6.88	104	0.48	1.51	0.37	0.08
8–14	21,723	87,882	331	1.52	3.77	138	0.64	1.57	40	0.18	0.46	0.42	0.12
15–21	21,723	96,986	114	0.52	1.18	50	0.23	0.52	23	0.11	0.24	0.44	0.2
22–28	21,723	101,801	51	0.23	0.5	21	0.1	0.21	8	0.04	0.08	0.41	0.16
> 28	21,723	112,679	51	0.44	0.84	34	0.16	0.3	8	0.04	0.08	0.36	0.06

ICU intensive care units, EMV episodes of mechanical ventilation, GICU general intensive care units, SICU surgical intensive care units, NICU neurological intensive care units, RICU respiratory intensive care units, TICU thoracic surgery intensive care units, VAC ventilator-associated conditions, IVAC infection-related ventilator-associated complication, PVAP possible ventilator-associated pneumonia

ISSN: 1364-8535