Performance of ICU ventilators during noninvasive ventilation with large leaks in a total face mask: a bench study
Objective: Discomfort and noncompliance with noninvasive ventilation (NIV) interfaces are obstacles to NIV success. Total face masks (TFMs) are considered to be a very comfortable NIV interface. However, due to their large internal volume and consequent increased CO2 rebreathing, their orifices all...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Pneumologia e Tisiologia
2014-06-01
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| Series: | Jornal Brasileiro de Pneumologia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132014000300294&lng=en&tlng=en |
| _version_ | 1819239399951433728 |
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| author | Maria Aparecida Miyuki Nakamura Eduardo Leite Vieira Costa Carlos Roberto Ribeiro Carvalho Mauro Roberto Tucci |
| author_facet | Maria Aparecida Miyuki Nakamura Eduardo Leite Vieira Costa Carlos Roberto Ribeiro Carvalho Mauro Roberto Tucci |
| author_sort | Maria Aparecida Miyuki Nakamura |
| collection | DOAJ |
| description | Objective: Discomfort and noncompliance with noninvasive ventilation (NIV) interfaces are obstacles to NIV success. Total face masks (TFMs) are considered to be a very comfortable NIV interface. However, due to their large internal volume and consequent increased CO2 rebreathing, their orifices allow proximal leaks to enhance CO2 elimination. The ventilators used in the ICU might not adequately compensate for such leakage. In this study, we attempted to determine whether ICU ventilators in NIV mode are suitable for use with a leaky TFM. Methods: This was a bench study carried out in a university research laboratory. Eight ICU ventilators equipped with NIV mode and one NIV ventilator were connected to a TFM with major leaks. All were tested at two positive end-expiratory pressure (PEEP) levels and three pressure support levels. The variables analyzed were ventilation trigger, cycling off, total leak, and pressurization. Results: Of the eight ICU ventilators tested, four did not work (autotriggering or inappropriate turning off due to misdetection of disconnection); three worked with some problems (low PEEP or high cycling delay); and one worked properly. Conclusions: The majority of the ICU ventilators tested were not suitable for NIV with a leaky TFM. |
| first_indexed | 2024-12-23T13:51:31Z |
| format | Article |
| id | doaj.art-cd760070eb7241f38589ddb25e2f9fcf |
| institution | Directory Open Access Journal |
| issn | 1806-3756 |
| language | English |
| last_indexed | 2024-12-23T13:51:31Z |
| publishDate | 2014-06-01 |
| publisher | Sociedade Brasileira de Pneumologia e Tisiologia |
| record_format | Article |
| series | Jornal Brasileiro de Pneumologia |
| spelling | doaj.art-cd760070eb7241f38589ddb25e2f9fcf2022-12-21T17:44:35ZengSociedade Brasileira de Pneumologia e TisiologiaJornal Brasileiro de Pneumologia1806-37562014-06-0140329430310.1590/S1806-37132014000300013S1806-37132014000300294Performance of ICU ventilators during noninvasive ventilation with large leaks in a total face mask: a bench studyMaria Aparecida Miyuki NakamuraEduardo Leite Vieira CostaCarlos Roberto Ribeiro CarvalhoMauro Roberto TucciObjective: Discomfort and noncompliance with noninvasive ventilation (NIV) interfaces are obstacles to NIV success. Total face masks (TFMs) are considered to be a very comfortable NIV interface. However, due to their large internal volume and consequent increased CO2 rebreathing, their orifices allow proximal leaks to enhance CO2 elimination. The ventilators used in the ICU might not adequately compensate for such leakage. In this study, we attempted to determine whether ICU ventilators in NIV mode are suitable for use with a leaky TFM. Methods: This was a bench study carried out in a university research laboratory. Eight ICU ventilators equipped with NIV mode and one NIV ventilator were connected to a TFM with major leaks. All were tested at two positive end-expiratory pressure (PEEP) levels and three pressure support levels. The variables analyzed were ventilation trigger, cycling off, total leak, and pressurization. Results: Of the eight ICU ventilators tested, four did not work (autotriggering or inappropriate turning off due to misdetection of disconnection); three worked with some problems (low PEEP or high cycling delay); and one worked properly. Conclusions: The majority of the ICU ventilators tested were not suitable for NIV with a leaky TFM.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132014000300294&lng=en&tlng=enVentiladores mecânicosRespiração com pressão positivaVentilação não invasivaSegurança de equipamentosFalha de equipamentoMáscaras |
| spellingShingle | Maria Aparecida Miyuki Nakamura Eduardo Leite Vieira Costa Carlos Roberto Ribeiro Carvalho Mauro Roberto Tucci Performance of ICU ventilators during noninvasive ventilation with large leaks in a total face mask: a bench study Jornal Brasileiro de Pneumologia Ventiladores mecânicos Respiração com pressão positiva Ventilação não invasiva Segurança de equipamentos Falha de equipamento Máscaras |
| title | Performance of ICU ventilators during noninvasive ventilation with large leaks in a total face mask: a bench study |
| title_full | Performance of ICU ventilators during noninvasive ventilation with large leaks in a total face mask: a bench study |
| title_fullStr | Performance of ICU ventilators during noninvasive ventilation with large leaks in a total face mask: a bench study |
| title_full_unstemmed | Performance of ICU ventilators during noninvasive ventilation with large leaks in a total face mask: a bench study |
| title_short | Performance of ICU ventilators during noninvasive ventilation with large leaks in a total face mask: a bench study |
| title_sort | performance of icu ventilators during noninvasive ventilation with large leaks in a total face mask a bench study |
| topic | Ventiladores mecânicos Respiração com pressão positiva Ventilação não invasiva Segurança de equipamentos Falha de equipamento Máscaras |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-37132014000300294&lng=en&tlng=en |
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