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Re-purposing of domestic steam disinfectors within the hospital-at-home setting.
Millar, Beverley C; Stirling, Jonathan; Maguire, Mollie; Moore, Rachel E; Murphy, Alan; Moore, John E.
  • Millar BC; Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Lisburn Road, Belfast, Northern Ireland, BT9 7AD, UK; School of Medicine, Dentistry and Biomedical Science, The Wellcome-Wolfson Institute for Experimental Me
  • Stirling J; Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Lisburn Road, Belfast, Northern Ireland, BT9 7AD, UK.
  • Maguire M; School of Medicine, Dentistry and Biomedical Science, The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University, 97 Lisburn Road, Belfast, BT9 7BL, Northern Ireland, UK.
  • Moore RE; Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Lisburn Road, Belfast, Northern Ireland, BT9 7AD, UK; School of Biological Sciences, Queen's University, 1-33 Chlorine Gardens, Belfast, BT9 5AJ, Northern Ire
  • Murphy A; Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Lisburn Road, Belfast, Northern Ireland, BT9 7AD, UK.
  • Moore JE; Laboratory for Disinfection and Pathogen Elimination Studies, Northern Ireland Public Health Laboratory, Nightingale (Belfast City) Hospital, Lisburn Road, Belfast, Northern Ireland, BT9 7AD, UK; School of Medicine, Dentistry and Biomedical Science, The Wellcome-Wolfson Institute for Experimental Me
Infect Dis Health ; 26(1): 72-80, 2021 02.
Article in English | MEDLINE | ID: covidwho-866717
ABSTRACT

BACKGROUND:

Vulnerable patients being cared for in hospital-at-home settings require safe disinfection of their medical devices, including nebulisers and other respiratory equipment. The scale of patients now being cared for in hospital-at-home settings as a result of COVID19 places huge pressure on hospital central sterile services departments (CSSDs) to provide consumable items to safely support such patients' care. This places new importance on the disinfection of mundane objects, including crockery, cutlery and frequently touched objects in the home environment. This study examined temperature performance of steam disinfectors and the consequences of potential operator misuse on the survival of 62 bacteria and yeast organisms.

METHODS:

Thermal performance of steam disinfectors was evaluated using calibrated thermocouple probes in multiple permutations of device usage with 62 test organisms.

RESULTS:

Thermocouple data demonstrated disinfection A0 values of 6000 (upper layer) and 60 (lower layer). Steam disinfection of baby bottles had a thermal lethality of at least A0 = 600. Variation in disinfector temperatures were noted, depending on the geometric location of thermocouples. Additional notable temperature reductions occurred with device underfilling with suboptimal water volumes. Steam disinfection eradicated all 62 non-spore-forming Gram-positive, Gram-negative and yeast organisms tested and eradicated all organisms in the inner teat space of contaminated babies' dummies, rendering safe steam disinfection of babies' dummies.

CONCLUSION:

Domestic steam disinfection offers an inexpensive, simple, versatile and widely available technology for the elimination of common non-spore-forming nosocomial pathogens and safe disinfection of medical devices, fomites and other mundane objects within the hospital-at-home scenario, thereby enhancing patient safety.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Steam / COVID-19 Type of study: Experimental Studies / Prognostic study Limits: Humans / Infant Language: English Journal: Infect Dis Health Year: 2021 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Steam / COVID-19 Type of study: Experimental Studies / Prognostic study Limits: Humans / Infant Language: English Journal: Infect Dis Health Year: 2021 Document Type: Article