![]() FFP3 - filters at least 99% of airborne particles.FFP2 - filters at least 94% of airborne particles.FFP1 - filters at least 80% of airborne particles.‘Conformité Européen’ (CE) classification system:.Those N95's with a exhalation valve protects the person wearing the mask but not the subject being evaluated/operated on.Surgical N95 - filters 95% of airborne particles not resistant to oil not all N95's are cleared by FDA as 'surgical masks' see: (accessed 3-30-2020).100 - filters at least 99.97% of particles.Number (95, 99, and 100) refers to filter to minimum percentage of airborne particles filtered out by the mask.Note: while coronaviruses do have viral envelopes composed of lipids, the quantity of oil is insufficient to affect the efficacy of "N"-labeled FFRs.P - strongly resistant to oil (oil Proof).Letter (N, R, and P) refers to filter's ability to protect against oils.NIOSH classification system (recognized by US, Canada, Mexico and Chile) - 9 total available mask combinations:.Disposable half facepiece respirators worn to filter out particles.N-95 and other Particulate Filtering Facepiece Respirators (FFRs):.What is an N-95 respirator, and what alternative types of Air-Purifying Respirators (APRs) are available to be used as PPE? Limit personnel to only essential HCPs do not allow visitors during procedure.Recommended PPE for an AGP: N-95 respirator (or APR with higher level of protection), eye protection, gloves, gown, hair protection.Aerosol- Generating Procedure ( AGP) - procedures likely to induce coughing (e.g., open suctioning of airway).As per CDC recommendations (3-21-2020 CDC): " N95 respirators or respirators that offer a higher level of protection should be used instead of a facemask when performing or present for an aerosol-generating procedure":.Surgeries and endoscopic examinations often require applications of sprays and use of instruments which can aerosolize viral particles.Viral density and replication rate greatest in the nose and nasopharynx.According to the American Academy of Otolaryngology, "otolaryngologists are among highest-risk group when performing upper airway surgeries and examinations".Why is PPE important for otolaryngologists during the COVID-19 Pandemic? CDC site comparing N95, EHFPs, and PAPRs:.CDC Coronavirus Disease 2019 (COVID-19) website:.UIHC Otolaryngology COVID Resource Links Abbreviations Addressing COVID-19 Explained.The Center for Disease Control and Prevention Website (CDC):.Information provided regarding N-95 Respirators (HEPA or High-Efficiency-Particulate-Air Filter Respirators) comes from: ![]()
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