Validez de un método fotométrico de medición de partículas en aire para el control de quirófanos y otras salas de ambiente controlado en los hospitales
- Berta Uriel Latorre
- D. Seoane Mato
- María Teresa Alves
- María Jesús Azuara García
- María Jesús García García
- A. Blanco Rodríguez
- Lisset Fernández de Armas
- Servando López Álvarez
- María Cruz Méndez Diéguez
ISSN: 1888-6116
Year of publication: 2013
Volume: 24
Issue: 3
Pages: 195-199
Type: Article
More publications in: Trauma
Abstract
Objective: Validate a photometric on-air particle measurement system in order to perform ambient bio-secu- rity checks in operating rooms and other clean rooms within hospitals. Material and methods: A total of 144 coupled air samples were performed, 88 in 8 different operating rooms with conventional ventilation systems and 3-level filtering and 56 in 9 different rooms without specific ventilation systems. Particles were measured in size between 0,1 to 10 ?m with the photometric system in mg/m 3 . Simultane- ously in the rooms are performed the sampling air method with impact on culture media. Incubation period is 5 days and count is performed in colony-forming units (CFU/1000L). Finally, optimal cut-points in particles mea- sure were calculated using ROC curves in order to discriminate the three different contamination levels. Results: Spearman�s correlation coefficient was 0,779 p<0,001. Sensitivity for cut-points in particle counting for the different contamination levels was 95,83% ,100% and 100% respectively, and the corresponding Kap- pa indexes were 0,51; 0,88 and 0,75. Conclusion: Correlation among measurements is notable. Particle measurement can be a worthy alternative for some of the routine bio-security checks