TABLE 1.
Impact of the Change in National Health and Safety Network Surveillance Definitions on Burn Intensive Care Unit Ventilator-Associated Pneumonia Events
| Jul 2011–Dec 2012 (18 mo) Pre-2013 VAP |
Jan 2013–Jun 2014 (18 mo) VAE-Possible VAP |
July 2014 (18 mo)–Dec 2015 | ||
|---|---|---|---|---|
|
| ||||
| Pre-2013 VAP | VAE-Possible VAP | |||
| Ventilator-associated events, no. | 21 | 5 | 18 | 2 |
| Total ventilator days | 4,695 | 4,860 | 3,632 | 3,632 |
| Total patient days | 11,148 | 10,968 | 10,944 | 10,944 |
| Device utilization ratio, device days/patient days | 0.42 | 0.43 | 0.33 | 0.33 |
| Incidence of (P)VAP events/1,000 ventilator days | 4.47 | 1.03 | 4.96 | 0.55 |
| Days from admission to event, d, median (IQR) | 19 (11–43) | 15 (5–36) | 6 (4–21) | 21.5 (5–38) |
| Days hospitalized, d, median (IQR) | 73 (55–104) | 52 (15–66) | 71a (46–119) | 131 (125–137) |
| Died during hospitalization, no. (%) | 9 (43) | 1 (20) | 5a (29) | 0 (0) |
| Age at event, y, median (IQR) | 50 (27–60) | 36 (34–77) | 43a (30–64) | 61.5 (59–64) |
| Male, no. (%) | 13 (62) | 0 (0) | 11a (65) | 2 (100) |
| Inhalational injury, no. (%) | 8 (38) | 0 (0) | 7a (41) | 0 (0) |
| Common organisms recovered, no. (%)b | ||||
| S. aureus | 3 (14) | 1 (20) | 10 (56) | 1 (50) |
| P. aeruginosa | 13 (62) | 1 (20) | 3 (17) | 0 (0) |
| Enterobacteriacae | 7 (33) | 1 (20) | 6 (33) | 1 (50) |
| A. baumannii | 0 (0) | 1 (20) | 0 (0) | 0 (0) |
NOTE. IQR, interquartile range; VAP, ventilator-associated pneumonia; VAE, ventilator-associated event.
a
A single patient contributed 2 events but was counted only once for these analyses.
b
Percentages may not sum to 100 because >1 bacterial species could be collected from a single event.