• Alten Oskay, Mehmet Uluturk, Hazan Cevirme, Tulay Oskay, Hande Senol, Mert Ozen, Murat Seyit, Atakan Yilmaz, and Ibrahim Turkcuer.
• Department of Emergency Medicine, School of Medicine, Pamukkale University, Kinikli Campus, 20700, Denizli, Turkey. oskayten@gmail.com.
• Ir J Med Sci. 2023 Feb 1; 192 (1): 395402395-402.

BackgroundThere are conflicting data on the effects of masks on vital signs and end-tidal CO2 (EtCO2) values in the literature.AimsThis study aims to evaluate the changes in the vital parameters and EtCO2 values of the patients who were administered oxygen through nasal cannula (NC) and simple oxygen mask (SOM) and wore surgical masks (SM) on top during their treatment.MethodsThe prospective, observational study was conducted from January 2021, over consecutive 30 days, in the emergency department of a tertiary-care university hospital. The vital signs and EtCO2 values of the subjects administered O2 were noted at the time of arrival and at the 30th and 120th minutes of treatment. Changes in vital signs and EtCO2 values were compared with regard to NC-SM and SOM-SM applications over a 120-min study period.ResultsSixty-eight subjects were included in two groups (NC-SM [n = 49] and SOM-SM [n = 19]). At the 120th minute, a decrease in systolic and diastolic blood pressure, heart rate, and respiratory rate and an increase in oxygen saturation were observed in the group including all subjects. After decreasing slightly in the first 30 min, the EtCO2 value remained stable.ConclusionsNC-SM and SOM-SM applications do not affect adversely, and even seem to lead to recovery of, the vital signs and EtCO2 values during 120 min in subjects with acute complaints.© 2022. The Author(s), under exclusive licence to Royal Academy of Medicine in Ireland.

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