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Evidence summary: What is the risk of using laminar airflow in operating theatres when operating on a COVID-19 patient? [v2.0]

dc.contributor.authorNational Health Library & Knowledge Service (NHLKS)
dc.date.accessioned2020-05-18T10:55:29Z
dc.date.available2020-05-18T10:55:29Z
dc.date.issued2020-05-08
dc.identifier.urihttp://hdl.handle.net/10147/627638
dc.descriptionVentilation in both laminar flow and conventionally ventilated theatres should remain fully on during surgical procedures where patients have suspected or confirmed COVID19 infection1, 4. Aerosols which may be generated as a result of AGPs will be localised and rapidly diluted by operating theatre ventilation. Air passing from operating theatres to adjacent areas will be highly diluted and is not considered to be a risk. Local risk assessment may dictate that a neutral pressure theatre or negative pressure theatre is preferred for COVID19 procedures1. Ti et al7 describe an operating room configuration in Singapore in which the prep, scrub and operating room proper are positive pressure areas designed to reduce surgical site infections. The anesthesia induction room and ante room are negative pressure areas. These serve as a barrier to prevent contaminated air leaving the operating room and external pathogens entering the operating room. In earlier studies, Chow et al9, 10, 11 assert that a negative-pressure operating theater is required to limit the spread of respiratory diseases in patients with SARS, tuberculosis or similar infectious diseases. Airflow performance in the negative-pressure operating theater effectively controlled the dispersion of infectious particles. Air velocity at the supply diffuser has been identified as one of the most important factors in governing the dispersion of airborne infectious particles. Higher velocity within the laminar regime is advantageous in minimizing the heat-dissipation effect and to ensure an adequate washing effect against particulate settlement. The authors emphasize that a successful outcome in preventing airborne infection depends as much on resolving human factors as on overcoming technical obstacles.en_US
dc.language.isoenen_US
dc.publisherHealth Service Executiveen_US
dc.subjectCORONAVIRUSen_US
dc.subjectCOVID-19en_US
dc.subjectSURGERYen_US
dc.subjectOPERATING THEATRESen_US
dc.subjectINFECTION CONTROLen_US
dc.titleEvidence summary: What is the risk of using laminar airflow in operating theatres when operating on a COVID-19 patient? [v2.0]en_US
dc.typeOtheren_US
refterms.dateFOA2020-05-18T10:55:35Z


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