نتایج جستجو برای: surgical mask
تعداد نتایج: 353216 فیلتر نتایج به سال:
BACKGROUND Although tuberculosis is transmitted by the airborne route, direct information on the natural output of bacilli into air by source cases is very limited. We sought to address this through sampling of expelled aerosols in face masks that were subsequently analyzed for mycobacterial contamination. METHODS In series 1, 17 smear microscopy positive patients wore standard surgical face ...
Introduction: Expiratory upper airway obstruction during bag-mask ventilation is not well characterized. Methods: An audit was done to assess expiratory obstruction in 90 adult surgical patients undergoing bag-mask ventilation during the induction of general anaesthesia. Results: Clinicians experienced difficulty delivering gas to the lungs when the head was neutral in 52 of 90 patients (58%; i...
OBJECTIVE It is more difficult to perform bag-mask ventilation in edentulous patients than in patients with intact dentition. The laryngeal mask airway (LMA) provides a better alternative to the standard face mask if the facial contours of the patient are not suited for the standard face mask. We aimed to compare these two different LMAs in edentulous geriatric patients. METHODS Edentulous pa...
Tonsillectomy is one of the most commonly performed surgical procedures in children. In the management of the pediatric airway for general anesthesia different adjuncts can be used such as endotracheal tube (ETT) and laryngeal mask airway (LMA). There are no agreed national guidelines or consensus in the United Kingdom (UK) for the selection of airway adjuncts in pediatric tonsillectomy, theref...
1- introduction this research attempts to investigate the effects of forensically-relevant facial concealment on voiceless fricatives /f, s, ʃ/ in farsi. there are various types of face-concealing garments that are commonly worn by people for the occupational, recreational, religious, and cultural purposes .these coverings may be typically used as disguises during the commission of crime by del...
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