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Microbial Air Monitoring in Turbulent Airflow Operating Theatres: Is It Possible to Calculate and Hypothesize New Benchmarks for Microbial Air Load?

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  • Maria Luisa Cristina

    (Department of Health Sciences, University of Genova, Via Pastore 1, 16132 Genova, Italy
    Operating Unit (S.S.D. U.O.) Hospital Hygiene, Galliera Hospital, Mura delle Cappuccine 14, 16128 Genoa, Italy)

  • Anna Maria Spagnolo

    (Department of Health Sciences, University of Genova, Via Pastore 1, 16132 Genova, Italy
    Operating Unit (S.S.D. U.O.) Hospital Hygiene, Galliera Hospital, Mura delle Cappuccine 14, 16128 Genoa, Italy)

  • Gianluca Ottria

    (Department of Health Sciences, University of Genova, Via Pastore 1, 16132 Genova, Italy
    Operating Unit (S.S.D. U.O.) Hospital Hygiene, Galliera Hospital, Mura delle Cappuccine 14, 16128 Genoa, Italy)

  • Elisa Schinca

    (Department of Health Sciences, University of Genova, Via Pastore 1, 16132 Genova, Italy
    Operating Unit (S.S.D. U.O.) Hospital Hygiene, Galliera Hospital, Mura delle Cappuccine 14, 16128 Genoa, Italy)

  • Chiara Dupont

    (Department of Health Sciences, University of Genova, Via Pastore 1, 16132 Genova, Italy)

  • Alessio Carbone

    (Operating Unit (S.S.D. U.O.) Hospital Hygiene, Galliera Hospital, Mura delle Cappuccine 14, 16128 Genoa, Italy)

  • Martino Oliva

    (Operating Unit (S.S.D. U.O.) Hospital Hygiene, Galliera Hospital, Mura delle Cappuccine 14, 16128 Genoa, Italy)

  • Marina Sartini

    (Department of Health Sciences, University of Genova, Via Pastore 1, 16132 Genova, Italy
    Operating Unit (S.S.D. U.O.) Hospital Hygiene, Galliera Hospital, Mura delle Cappuccine 14, 16128 Genoa, Italy)

Abstract

Multiple studies have demonstrated the presence of microorganisms commonly associated with surgical site infections (SSIs), in the air within the operating theatre (OT). In some countries such Italy, the limit of microbial concentration in the air for OT with turbulent airflows is 35 CFU/m 3 for an empty OT and 180 CFU/m 3 during activity. This study aims to hypothesize new benchmarks for the airborne microbial load in turbulent airflow operating theatres in operational and at rest conditions using the percentile distribution of data through a 17-year environmental monitoring campaign in various Italian hospitals that implemented a continuous quality improvement policy. The quartile distribution analysis has shown how in operational and at rest conditions, 75% of the values were below 110 CFU/m 3 and 18 CFU/m 3 , respectively, which can be considered a new benchmark for the monitored OTs. During the initial stages of the monitoring campaign, 28.14% of the concentration values in operational conditions and 29.29% of the values in at rest conditions did not conform to the Italian guidelines’ reference values. In contrast, during the last 5 years, all values in both conditions conformed to the reference values and 98.94% of these values were below the new benchmarks. Continuous improvement has allowed contamination to be reduced to levels well below the current reference values.

Suggested Citation

  • Maria Luisa Cristina & Anna Maria Spagnolo & Gianluca Ottria & Elisa Schinca & Chiara Dupont & Alessio Carbone & Martino Oliva & Marina Sartini, 2021. "Microbial Air Monitoring in Turbulent Airflow Operating Theatres: Is It Possible to Calculate and Hypothesize New Benchmarks for Microbial Air Load?," IJERPH, MDPI, vol. 18(19), pages 1-12, October.
  • Handle: RePEc:gam:jijerp:v:18:y:2021:i:19:p:10379-:d:648710
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    References listed on IDEAS

    as
    1. Lucia Bonadonna & Rossella Briancesco & Anna Maria Coccia & Pierluigi Meloni & Giuseppina La Rosa & Umberto Moscato, 2021. "Microbial Air Quality in Healthcare Facilities," IJERPH, MDPI, vol. 18(12), pages 1-19, June.
    2. Cesira Pasquarella & Carla Balocco & Maria Eugenia Colucci & Elisa Saccani & Samuel Paroni & Lara Albertini & Pietro Vitali & Roberto Albertini, 2020. "The Influence of Surgical Staff Behavior on Air Quality in a Conventionally Ventilated Operating Theatre during a Simulated Arthroplasty: A Case Study at the University Hospital of Parma," IJERPH, MDPI, vol. 17(2), pages 1-14, January.
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