SciELO - Scientific Electronic Library Online

vol.37 número4Cirugía torácica por puerto único. Experiencia inicial índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados



Links relacionados


Revista Médica del Uruguay

versión impresa ISSN 0303-3295versión On-line ISSN 1688-0390


BELTRAMELLI, Rodrigo et al. Modified snorkeling facemasks for safe application of non-invasive ventilation. A pilot study. Rev. Méd. Urug. [online]. 2021, vol.37, n.4, e201.  Epub 01-Dic-2021. ISSN 0303-3295.


within the context of the SARS-CoV-2 pandemic, different authors proposed adaptations to snorkeling masks available in the market (modified masks: MM) to provide oxygen therapy with positive pressure ventilation or not. Until today, none of them has assessed its performance as an interface for non-invasive ventilation (NIV) in the inspiratory pressure support mode.


to develop an interface of NIV using MM and assess its performance with a conventional full mask.


the MM were adapted as NIV interfaces using two pieces created by 3D printing. Their performance was compared to a that of a conventional mask in 10 healthy volunteers in inspiratory pressure support (3 cmH2O) mode with two levels of positive pressure towards the end of expiration (PEEP 4 and 8 cmH2O). The following were compared: system leaks, respiratory rate, normal volume, pulse oximetry, transcutaneous car bon dioxide and comfort.


with 4 cmH2O of PEEP, no significant differences were found between masks in none of the variables studied. With 8 cmH2O de PEEP, the use of MM were associated to a lower level of CO2tc (41.0±5.7 vs 43.5±8.1 mmHg; p=0.03) and greater comfort (8.3±1.1 vs 6.5±1.4; p<0.01) than conventional masks (CM).


in healthy volunteers, MM for NIV evidence a similar performance than that of standard oronasal masks, and have a further advantage, as they are more comfortable and cheaper. Even if further studies are needed to support its use, modified snorkeling masks could represent a valid option during the health emergency caused by the SARS-CoV-2 pandemic in consideration of the scarce interfaces available in the market.

Palabras clave : Noninvasive ventilation; Diving masks; COVID-19.

        · resumen en Español | Portugués     · texto en Español     · Español ( pdf )