الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 89 |  |  |
| | | from | 89 | | |
Abstract
S
UMMARY
e’ve all been wearing masks to help prevent the spread of the coronavirus. The FDA described a surgical mask as a “loose-fitting, disposable device that creates a physical barrier between the mouth and nose of the wearer and potential contaminants in the immediate environment,” and N95 respirator as a “respiratory protective device designed to achieve a very close facial fit and very efficient filtration of airborne particles”.
The Centers for Disease Control and Prevention (CDC) in the United States recommended that individuals wear a face mask in public if they cannot distance at least six feet from others, to help prevent the transmission of COVID-19.
The study aims to find out whether different masks cause hypercapnia or hypoxia.
The study included healthy personnel more than 18 years old and excluded: Personnel with Any Chest diseases, Other unstable medical issues, Pregnancy, and major surgery the previous month mainly abdominal.
Every included participant was subjected to the following: Full medical history and consent for ABG sampling, Baseline ABG (0.5 ml blood) will be taken before wearing masks and Using Blood gas analyzer in chest department Ain shams university for results of ABG. Then allow same twenty
W
Summary
56
healthy individuals to wear different masks (surgical, N95 respirator, M3 mask) in succession and ABG will be taken one hour apart to compare any hypoxia or hypercapnia after each mask. and ask about any symptoms (dizziness-lack of focus-decrease capacity to speaking).
The statistical analysis of data showed that there was no discernible difference in increasing carbon dioxide proportion with or without masks. (p>0.05). no percentage of hypoxia after wearing any of the three masks, but There was high significant relation between occurrence of symptoms and presence of masks as there was high significant increase incidence of facial exfoliation, dizziness, headache, lack of focus and decrease capacity to continue speaking while wearing N95 mask. Two patients suffered from acne and facial exfoliation and seven patients had decrease capacity to continue speaking while wearing M3 mask.
In conclusion, medical masks are now required to use, particularly in public but there is no need to be concerned about decrease oxygen saturation or hypercapnia.
Recommendations are do this work but on larger number of healthy volunteers and assess the effects of different mask types when used with no or minimal activity and when doing normal physical work activity