The use and withdrawal of surgical face masks in recent years has occurred in an ad hoc manner that is incompatible with evidence-based practice. Much of the literature on masks consists of anecdotal evidence or summaries of previous studies. The rationale for wearing masks has shifted from protection of the patient to protection of the health care professional wearing the mask. Currently there...

The present study evaluated the efficacy of disposable surgical masks as a microbial barrier with 95% of Bacteria Filtration Efficacy (BFE) according to the wearing time (1, 2, 4 and 6 hours). The masks showed a decrease in efficacy after a 4-hour wearing time.

There are several types of contagiotn or surgical masks commonly used by physicians, nurses, and biological laboratory personnel to minimize the hazard of the trainsmission of airborne pathogenic microorganisms. As part of a study in which the respiratory protection afforded by various commercially available masks and respirators was evaluated, three represenitative types of contagion masks wer...

CONTEXT Football helmet face-mask attachment design changes might affect the effectiveness of face-mask removal. OBJECTIVE To compare the efficiency of face-mask removal between newly designed and traditional football helmets. DESIGN Controlled laboratory study. SETTING Applied biomechanics laboratory. PARTICIPANTS Twenty-five certified athletic trainers. INTERVENTION(S) The independe...

OBJECTIVE To identify which noninvasive ventilation (NIV) masks are most commonly used and the problems related to the adaptation to such masks in critically ill patients admitted to a hospital in the city of São Paulo, Brazil. METHODS An observational study involving patients ≥ 18 years of age admitted to intensive care units and submitted to NIV. The reason for NIV use, type of mask, NIV re...

BACKGROUND Many patients with sleep apnoea/hypopnoea syndrome (SAHS) find nasal continuous positive airway pressure (CPAP) treatment unsatisfactory due to side effects related to mouth air leakage. A study was performed to compare side effects with face mask and nose mask CPAP therapy in patients with SAHS, with and without uvulopalatopharyngoplasty (U3P). METHODS Twenty newly diagnosed patie...

Background—Many patients with sleep apnoea/hypopnoea syndrome (SAHS) find nasal continuous positive airway pressure (CPAP) treatment unsatisfactory due to side eVects related to mouth air leakage. A study was performed to compare side eVects with face mask and nose mask CPAP therapy in patients with SAHS, with and without uvulopalatopharyngoplasty (U3P). Methods—Twenty newly diagnosed patients ...

In today’s world, importance of biometric studies is increasing day by day. Biometric face recognition study is the most widely used method in the legal environment. Commonly, face image uses in all identification (IDs, driver’s license, passport, etc.). In particularly, to improve the social security of city life, automatic face detection and face recognition systems are needed and there is a ...