نتایج جستجو برای: vacuum aspiration
تعداد نتایج: 74524 فیلتر نتایج به سال:
background: good cytological sample is very important for the cytological diagnosis of thyroid nodules. the aim of this study was to evaluate the adequacy of prepared samples by the combination of aspiration and non- aspiration fine needle biopsy. methods: in this descriptive – analytical study, sampling was done simultaneously for each patient in fine needle aspiration and non-aspiration biops...
The design of cryogenic propellant tanks that are used for storing liquid hydrogen and liquid oxygen due to the low boiling temperature has many differences compared with the others. In this paper, the most important insulated systems in cryogenic storage tanks, such as vacuum insulated, vacuum insulated with powder, vacuum insulated with radiation shields, multilayer super insulation an...
background the vacuum assisted closure (vac) therapy has revolutionized the modern wound care. we developed a new concept of ‘vac at home’ in order to decrease the hospital cost. methods the study was conducted in a private hospital from january 2009 to december 2010. only those patients were included among whom the wounds were not complicated by concomitant injury and the patients were otherwi...
Background and Objectives: Aspiration is a serious complication that occurs due to delayed gastric emptying in mechanically ventilated patients. Aspiration results in increased rate of pneumonia and death. Acupressure can increase gastric motility and prevent aspiration. This study aimed to determine the effect of acupressure on occurrence of gastric content aspiration in mechanically ventilate...
PURPOSE We aimed to investigate effects of instrument settings on porcine vitreous flow rates through dual pneumatic high-speed vitrectomy probes. METHODS The CONSTELLATION(®) Vision System was tested with 250, 450, and 650 mmHg of vacuum using six ULTRAVIT(®) vitrectomy probes of each diameter (25+(®), 25, 23, and 20 gauge) operated from 500 cuts per minute (cpm) up to 5,000 cpm. Duty cycle ...
Currently, health workers including residents and fellows do not have a suitable phantom model to practice the fine- needle aspiration biopsy (FNAB) procedure. In the past, we standardized a model consisting of latex glove containing fresh cattle liver for practicing FNAB. However, this model is difficult to organize and prepare on short notice, with the procurement of fresh cattle liver being ...
AIM Heavy silicone oil removal can be challenging and differs considerably from conventional oil. Traditionally, strong active aspiration had to be applied through a long 18G needle just above the optic disc. We present a novel technique using a much shorter (7.5 mm) and smaller (20G) needle allowing its removal "from a distance." METHOD Active aspiration on a vacuum of 600 mm Hg of the "visc...
PURPOSE The purpose of this study was to use a novel method to quantify the traction applied to the retina during vitrectomy. METHODS Five 20-gauge electric cutters were used. Fresh porcine eyes were positioned in a specially developed holder and transfixed to the retinal layers with a microwire, and the other end was fixed to the load cell of a strain gauge. The cutter to be assessed was int...
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