نتایج جستجو برای: failure pressure
تعداد نتایج: 749874 فیلتر نتایج به سال:
conclusions there is a significant increased incidence of mortality, prolonged hospitalization, and rehospitalization in symptomatic patients with severe tr. therefore, we recommend more aggressive approach toward tv repair or replacement in these patients regardless of pap and systolic function. results heart failure (50%) was the most cause of death. mean years of survival from diagnosis of s...
T HE PATHOGENESIS of congestive failure is still uncertain. In 1910 Bolton and Starling (I) wrote that the analysis of the factors involved in the production of the disease was rendered difficult by the impossibility of accurately reproducing these states in animals. Since that time numerous methods have been tried to precipitate congestive failure in dogs. The attempts have met with limited su...
Cardiac-related failure of weaning from mechanical ventilation is an important reason for prolonged mechanical ventilation, intensive care unit treatment, and increased morbidity and mortality. When transthoracic echocardiography (TTE) is routinely performed before a weaning trial, patients at high risk of cardiac-related failure can be detected by low left ventricular (LV) ejection fraction, d...
Introduction Clinically important lead-induced tricuspid regurgitation (LITR) is an uncommon complication following cardiac device implantation. Surgical removal and replacement of a lead may improve heart failure caused by LITR. Percutaneous lead extraction and reimplantation may also improve or correct LITR. However, whether severe tricuspid regurgitation (TR) is caused by a lead is often unc...
High blood pressure plays a key role in the progression of renal failure. Hypertension is a common presentation of kidney disease and an almost invariable accompaniment of renal failure. Hypertension is also a major contributor to cardiovascular disease, the major cause of morbidity and mortality in renal failure. Hypertension is both cause and consequence of renal failure, but the precise natu...
AIMS Low pulse pressure is a marker of adverse outcome in patients with heart failure (HF) and reduced ejection fraction (HF-REF) but the prognostic value of pulse pressure in patients with HF and preserved ejection fraction (HF-PEF) is unknown. We examined the prognostic value of pulse pressure in patients with HF-PEF [ejection fraction (EF) ≥ 50%] and HF-REF. METHODS AND RESULTS Data from 2...
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Pressure vessels are essential industrial tools regarding storage of high-pressure fluids. Utilization pressure in ordinary environment impose serious dangers to human life case failure. Manufacturing material and working as per material’s strength necessary arguments for a vessel designer. In this study, five composite materials selected investigate the behavior under high pressure. FEA techni...
The effect of proof over-pressure on pressure vessels structural integrity is analysed. Risk based approach applied using Failure Analysis Diagramme to assess likelihood failure. Special attention paid crack-like defects detected by NDT regular testing which are unacceptable standards, but difficult be repaired. It was show, two examples, that such can remain if some strict conditions fulfilled...
The goal of this study was to evaluate contact area and surface pressure as a result of different suture patterns in the treatment of anterior shoulder instability caused by a Bankart lesion. Loads were applied through the humeral head to the glenoid surface in the intact shoulder and after simple suture labral repair (n=10) and vertical mattress labral repair (n=9). Peak contact pressure, mean...
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