نتایج جستجو برای: suction controlled
تعداد نتایج: 391428 فیلتر نتایج به سال:
BACKGROUND Closed suction drainage systems are frequently used to drain fluids, particularly blood, from surgical wounds. The aim of these systems is to reduce the occurrence of wound haematomas and infection. OBJECTIVES To evaluate the effectiveness of closed suction drainage systems for orthopaedic surgery. SEARCH STRATEGY We searched the Cochrane Bone, Joint and Muscle Trauma Group Speci...
BACKGROUND Endotracheal suctioning is a necessary procedure practiced by nurses in intensive care units to remove lung secretions. This procedure leads to higher oxygenation levels and reduced breathing difficulties. It also prevents atelectasis, pulmonary infections, and the accumulation of secretions. OBJECTIVES The present study aims to compare the effectiveness of open and closed endotrac...
BACKGROUND The morbidity of pancreatic resection remains high, with pancreatic fistula being the most common cause. The important question is whether any postoperative treatment adjustment may prevent the development of clinically significant postoperative pancreatic fistulae. Recent studies have shown that intraabdominal drains and manipulation using them are of great importance. Although auth...
Despite almost 50 years of research on the functional morphology and biomechanics of suction feeding, no consensus has emerged on how to characterize suction-feeding performance, or its morphological basis. We argue that this lack of unity in the literature is due to an unusually indirect and complex linkage between the muscle contractions that power suction feeding, the skeletal movements that...
BACKGROUND Early after intubation, a layer of biofilm covers the inner lumen of the endotracheal tube (ETT). Cleaning the ETT might prevent airways colonization by pathogens, reduce resistance to airflow, and decrease sudden ETT obstruction. We investigated the effectiveness of a cleaning closed suction system in maintaining the endotracheal tube free from secretions. METHODS We conducted a s...
OBJECTIVE To compare the outcomes of modified radical mastectomy wounds managed by closed wound drainage with suction and without suction. METHOD A prospective randomised trial was conducted at the University College Hospital in Ibadan, and the University of Nigeria Teaching Hospital in Enugu. Fifty women who required modified radical mastectomy for breast cancer were randomised to have close...
A computational and experimental study was carried out to determine whether blade tip suction can increase compressor efficiency. Compressor flow fields contain concentrated regions of high entropy fluid near the blade surfaces. Blade suction can remove this fluid, lowering the entropy of the compressor throughflow, thereby avoiding a thermodynamic inefficiency, ultimately raising the compresso...
Suction accumulator in rotary compressor is an important component from standpoints of compressor cost, performance, sound and ability of controlling excess liquid refrigerant. Because of its importance, it deserves its due attention to enhancement of its functions. This paper first defines functions of an accumulator, lists major design parameters and their common ranges. Then, a couple of maj...
Suction valves with even thinner and narrower, used in a high efficient reciprocating compressor, are required in order to reduce suction resistances. However, low flow resistance suction valves run properly under the very severe operating condition of high periodic impact stress which can cause the compressor failure. In this study, the effects of the valve design parameters on the impact fati...
This paper reports results from an investigation into the suction caissons failure mechanisms under vertical pull-out loads. An insight to the failure mechanisms of suction caissons paves the path for developing analytical solutions to their pull-out capacity. The numerical models of suction caissons have first been calibrated by and verified against several experimental data from other researc...
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