Impact of Different Types of Air Filtration and the Incidence of Nosocomial Aspergillosis in Bone Marrow Transplant Recipients
Study | Type of Air Filtration | Aspergillus Spore | Incidence of Nosocomial Aspergillosis |
Rhame et al. 1984
| Pre-HEPA Post-HEPA (2x4 foot HEPA filter in the room) | 2.0 0.8 | 10/66 (15%) 17/202 (8%) |
Rhame et al. 1985 | Post-HEPA (addition of HEPA filter in the corridor) | 0.14 | 4/97 (4%) |
Opal et al 1986 | Portable HEPA filters inside rooms outside rooms |
1.7 + 0.2 |
19 cases/yr (p<0.005) |
Sherertz et al 1987 | Pre-HEPA Post-HEPA (LAF) | 0.16-0.40 0.009 | 11/33 (33%) 0/31 (0%) |
Barnes et al 1989 | Pre-LAF Post-LAF | 133 0 | 6/19 (32%) 0/19 (0%) |
legend - This reviews the studies that have looked at the impact of air filtration on aspergillus infection rates.
Legend:
HEPA - | High Efficiency Particulate Air |
LAF - | Laminar Air Flow |
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