نتایج جستجو برای: surgical mask
تعداد نتایج: 353216 فیلتر نتایج به سال:
Background and Aim: The use of a mask is an effective measure to reduce the transmission of Covid-19. Today, due to the lack of N95 masks and medical masks with good performance, felt masks are widely used due to their ease of manufacture and low cost. The aim of this study was to determine the effectiveness of 3-layer felt masks containing polypropylene membranes in filtering particle size in ...
the laryngeal mask airway (lma) is an important addition to the anesthetist's equipments. however, its usage may involve some complications. we have encountered an unusual and potentially serious complication using this equipment. a 45-year old man underwent cataract surgery under general anesthesia. after the induction of anesthesia, a size 4 of the reusable classic lma was inserted without an...
INTRODUCTION The Colorado® microdissection needle has been used for 30 years as an alternative to cold dissection. Alexander was the first to publish the results of laryngeal mask in otorhinolaryngology and maxillofacial surgery. Later on it was introduced as a standard anaesthetic technique in our speciality. Objective The objective of this study was to compare the results of using laryngeal m...
OBJECTIVES To describe a surgical and anesthetic technique for chondrolaryngoplasty ("tracheal shaving") involving external translaryngeal needle insertion under general anesthesia, using a flexible fiberoptic bronchoscope and laryngeal mask airway. DESIGN Retrospective review of 31 patients who underwent chondrolaryngoplasty performed by a single surgeon. SETTING Academic medical center. ...
There are hesitations about the use of surgical face masks, which main tools in protection from COVID-19 pandemic, one biggest disasters our age, chronic airway diseases. The purpose study was to examine how stable patients with obstructive pulmonary disease (COPD) responded short-term mask terms in-mask air quality, oxygen saturation, and function. Forty-one COPD, by clinical presentation func...
Closed approach transcutaneous Serdev Suture lifts encompass the principale concept of stable suturing and fixation of mobile fascias to immobile periosteum, tendons and fascias, resulting in suture suspension and/or volume augmentation and/or repositioning. 21 techniques and individual modifications are used on face and in body areas, even where open surgical techniques cannot be directly appl...
این پایان نامه به دنبال ارائه روش هایی برای بهبودی سیگنال گفتار آلوده به نویز با رویکرد ارتقاء قابلیت فهم گفتار است. ماسک دودویی ایده ال (ibm) که هدف اصلی بحث آنالیز محاسباتی ترکیب شنیداری معرفی شده است، به عنوان ابزاری برای افزایش قابلیت فهم سیگنال گفتار مورد توجه قرار گرفته است. این ماسک در کنار توانایی که در افزایش قابلیت فهم دارد، مشکلاتی نیز همراه با آن وجود دارد. با توجه به تعریف ibm، که ...
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