CINECA IRIS Institutional Research Information System
IRIS è la piattaforma adottata dall’Università degli Studi di Udine per gestire l’archivio aperto dei prodotti della ricerca. L’archivio contiene articoli, contributi in volume, monografie, interventi pubblicati in atti di convegno, Tesi di dottorato e altri materiali.
EnglishOur aim was to evaluate the impact of aerators on water microbiological contamination in at-risk hospital departments, with a view to quantifying the possible risk of patient exposure to waterborne microorganisms. DESIGN. Weanalyzedthemicrobiologicalandchemical-physicalcharacteristicsofhotandcoldwaterinsomecriticalhospitaldepartments. SETTING. Two hospitals in northern Italy. METHODS. Wetook304watersamplesovera1-yearperiod,at3-monthintervals,fromtapsusedbyhealthcarepersonnelforhandwashing, surgical washing, and the washing of medical equipment. We analyzed heterotrophic plate counts (HPCs) at 36°C and 22°C, nonfastidious gram-negative bacteria (GNB-NE), and Legionella pneumophila. RESULTS. The percentages of positivity and mean values of HPCs at 22 °C, HPCs at 36°C, and GNB-NE loads were significantly higher at outlet points than in the plumbing system. In particular, GNB-NE positivity was higher at outlet points than in the plumbing system in both the cold water (31.58% vs 6.58% of samples were positive) and hot water (21.05% vs 3.95%) supplies. Our results also revealed contamination by L. pneumophila both in the plumbing system and at outlet points, with percentages of positive samples varying according to the serogroup examined (serogroups 1 and 2-14). The mean concentrations displayed statistically significant (P <.001) differences between the outlet points (27,382.89 ± 42,245.33 colony-forming units [cfu]/L) and the plumbing system (19,461.84 ± 29,982.11 cfu/ L). CONCLUSIONS. These results reveal a highlevelof contamination ofaeratorsbyvariousspeciesofgram-negativeopportuniststhatare potentially very dangerous for immunocompromised patients and, therefore, the need to improve the management of these devices.
The Impact of Aerators on Water Contamination by Emerging Gram-Negative Opportunists in At-Risk Hospital Departments / Maria Luisa Cristina;Anna Maria Spagnolo;Beatrice Casini;Angelo Baggiani;Pietro Del Giudice;Silvio Brusaferro;Andrea Poscia;Umberto Moscato;Fernanda Perdelli;Paolo Orlando. - In: INFECTION CONTROL AND HOSPITAL EPIDEMIOLOGY. - ISSN 0899-823X. - 35:2(2014), pp. 122-129.
| Titolo: | The Impact of Aerators on Water Contamination by Emerging Gram-Negative Opportunists in At-Risk Hospital Departments | |
| Autori: | ||
| Data di pubblicazione: | 2014 | |
| Rivista: | ||
| Citazione: | The Impact of Aerators on Water Contamination by Emerging Gram-Negative Opportunists in At-Risk Hospital Departments / Maria Luisa Cristina;Anna Maria Spagnolo;Beatrice Casini;Angelo Baggiani;Pietro Del Giudice;Silvio Brusaferro;Andrea Poscia;Umberto Moscato;Fernanda Perdelli;Paolo Orlando. - In: INFECTION CONTROL AND HOSPITAL EPIDEMIOLOGY. - ISSN 0899-823X. - 35:2(2014), pp. 122-129. | |
| Abstract: | Our aim was to evaluate the impact of aerators on water microbiological contamination in at-risk hospital departments, with a view to quantifying the possible risk of patient exposure to waterborne microorganisms. DESIGN. Weanalyzedthemicrobiologicalandchemical-physicalcharacteristicsofhotandcoldwaterinsomecriticalhospitaldepartments. SETTING. Two hospitals in northern Italy. METHODS. Wetook304watersamplesovera1-yearperiod,at3-monthintervals,fromtapsusedbyhealthcarepersonnelforhandwashing, surgical washing, and the washing of medical equipment. We analyzed heterotrophic plate counts (HPCs) at 36°C and 22°C, nonfastidious gram-negative bacteria (GNB-NE), and Legionella pneumophila. RESULTS. The percentages of positivity and mean values of HPCs at 22 °C, HPCs at 36°C, and GNB-NE loads were significantly higher at outlet points than in the plumbing system. In particular, GNB-NE positivity was higher at outlet points than in the plumbing system in both the cold water (31.58% vs 6.58% of samples were positive) and hot water (21.05% vs 3.95%) supplies. Our results also revealed contamination by L. pneumophila both in the plumbing system and at outlet points, with percentages of positive samples varying according to the serogroup examined (serogroups 1 and 2-14). The mean concentrations displayed statistically significant (P <.001) differences between the outlet points (27,382.89 ± 42,245.33 colony-forming units [cfu]/L) and the plumbing system (19,461.84 ± 29,982.11 cfu/ L). CONCLUSIONS. These results reveal a highlevelof contamination ofaeratorsbyvariousspeciesofgram-negativeopportuniststhatare potentially very dangerous for immunocompromised patients and, therefore, the need to improve the management of these devices. | |
| Handle: | http://hdl.handle.net/11390/1036377 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11390/1036377
Copyright © 2021