Quality assessment of emergency corrective maintenance of critical care ventilators within the context of COVID-19 in Sao Paulo, Brazil

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Alembert Eistein Lino Alvarado https://orcid.org/0000-0002-6173-5428
Diego Antonio de Oliveira Rosa
Sara Gomes Mello
Marcelo Sanches Dias
Mario Fernando Barbosa
Kelvis do Nascimento Barros
Bruno Alexandre Lemos
Renato de Lima Vitorasso
Victor Pacheco Bartholomeu
Pedro Parik Americano
Edison Silva Filho
José Carlos Teixeira de Barros Moraes
Antonio Francisco Gentil Ferreira Junior
Henrique Takachi Moriya


Quality assessment, critical care ventilators, standards, corrective maintenance, ventilation modes, COVID-19


This technical report presents the quality assessment process for the emergency corrective maintenance of critical care ventilators in a node, IPT-POLI, of a voluntary network that is part of the initiative +Maintenance of Ventilators, led by the National Service of Industrial Training (SENAI) and its Integrated Manufacturing and Technology Center (CIMATEC) to perform maintenance on unused mechanical ventilators in the context of the COVID-19 pandemic in Brazil. A procedure was established for the quality assessment of equipment subjected to corrective emergency maintenance, covering the essential aspects of the three primary standards (ABNT NBR IEC 60601-1: 2010+A1:2016, ABNT NBR ISO IEC 62353: 2019, and ABNT NBR ISO 80601-2-12:2014) for performance and safety assessment. A set of nine critical care ventilators was evaluated considering the following parameters: leakage current, protective ground resistance, control accuracy, delivered oxygen test, and alarms. The evaluated ventilators underwent corrective emergency maintenance before performance and safety assessments. In the electrical safety tests, all equipment presented values prescribed for the standard. However, the assessment of ventilator parameters revealed that their performance was below the standard. Finally, quality assessment reports were sent to the clinical engineering departments at hospitals. Thus, it can be concluded that criteria selection for the quality assessment in critical care ventilators is crucial and of great significance for future pandemic scenarios, such as the situation experienced during the COVID-19 pandemic.


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