Prediction of N95 Respirator Fit from Fogging of Eyeglasses: A Pilot Study

Autor: Moira Johns, Solomon R Thambiraj, Sumesh Arora, Natalia Rojas, Rimen Lim, Sandy Kyaw, Warren C Stewart, Yahya Shehabi
Rok vydání: 2021
Předmět:
Zdroj: Indian Journal of Critical Care Medicine : Peer-reviewed, Official Publication of Indian Society of Critical Care Medicine
ISSN: 1998-359X
0972-5229
DOI: 10.5005/jp-journals-10071-23947
Popis: Aim and objective Fogging of eyeglasses while wearing N95 respirators is common. It is commonly held that the N95 respirator has a poor fit if there is fogging of eyeglasses. We conducted this prospective, pilot study to determine if fogging of eyeglasses predicts poor fit of N95 respirator. Materials and methods Seventy volunteer healthcare workers from a tertiary intensive care unit in Sydney, Australia participated. The participants donned one of the following N95 respirators: three-panel flat-fold respirator (3M 1870), cup-shaped respirator (3M 1860), or a duckbill respirator. After a satisfactory “user seal check” as recommended by the manufacturer, the participants donned eyeglasses and checked for fogging. A quantitative fit test (QnFT) of the respirator was then performed (using PortaCount Respirator Fit Tester 8048, TSI Inc., Minnesota, USA). A fit factor of
Databáze: OpenAIRE