• Alonso Mateos-Rodríguez, Justo Ortega-Anselmi, Francisco Javier Candel-González, Jesús Canora-Lebrato, Marcos Fragiel-Saavedra, Alba Hernández-Píriz, Navid Behzadi-Koocahni, Juan González-Del Castillo, Antonio Pérez-Alonso, María Luisa de la Cruz-Conty, Gonzalo García-de Casasola, Javier Marco-Martínez, and Antonio Zapatero-Gaviria.
• Hospital de Campaña IFEMA COVID-19, Madrid, España; Servicio de Urgencias Médicas de Madrid SUMMA112, Madrid, España; Facultad de Medicina, Universidad Francisco de Vitoria, Madrid, España. Electronic address: alonso.mateos@salud.madrid.org.
• Med Clin (Barc). 2021 Jan 22; 156 (2): 55-60.

IntroductionThe use of devices that provide continuous positive pressure in the airway has shown improvement in various pathologies that cause respiratory failure. In the COVID-19 pandemic episode the use of these devices has become widespread, but, due to the shortage of conventional continuous positive airway pressure (CPAP) devices, alternative devices have been manufactured. The objective of this study is to describe the use of these devices, as well as their efficacy.Material And MethodsData are collected from patients admitted for pneumonia due to COVID-19 at the IFEMA Field Hospital. Data are collected from 23 patients with respiratory failure and need for ventilatory support.ResultsStudy carried out on a total of 23 patients, dated admission to IFEMA. Alternative CPAP was used in five patients (21.7%), while ventilatory support with a reservoir mask or Ventimask Venturi effect was used in the remaining 18 patients (78.3%). A progressive increase in saturation is observed in those patients in whom alternative CPAP was used (from 94% on average to 98 and 99% on average after 30 and 60 minutes with the mask, respectively), although this change was not significant (p = 0.058 and p = 0.122, respectively). No significant change in RF was observed at the beginning and end of the measurement in patients who used alternative CPAP (p = 0.423), but among those who did not use alternative CPAP (p = 0.001). A statistically significant improvement in the variable oxygen saturation / fraction inspired by oxygen is observed in patients who used alternative CPAP (p = 0.040) CONCLUSION: The use of these devices has helped the ventilatory work of several patients by improving their oxygenation parameters. To better observe the evolution of patients undergoing this therapy and compare them with patients with other types of ventilatory support, further studies are necessary.Copyright © 2020 Elsevier España, S.L.U. All rights reserved.

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