نتایج جستجو برای: reflux ratio
تعداد نتایج: 519276 فیلتر نتایج به سال:
OBJECTIVE We undertook this cross-sectional study to investigate the distribution of venous reflux and effect of axial reflux in superficial and deep veins and to determine the clinical value of quantifying peak reverse flow velocity and reflux time in limbs with chronic venous disease. PATIENTS AND METHODS Four hundred one legs (127 with skin changes, 274 without skin changes) in 272 patient...
HMCM-22 with a Si:Al molar ratio of 15:1 has been shown to effectively catalyze the synthesis of acetals with 100% selectivity by the reaction of aldehydes with methanol under reflux conditions. Platelet HMCM-22 particles were prepared by the static strategy and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), BET tech...
Effective parameters that can effect on the performance of the separation system consist of operating pressure, operating temperature, reflux ratio, and kind of produce desirable products and different sequences of splits. As take a separation system with optimal performance is dependent on optimization of above mentioned effective parameters. In generally, there are two criteria (as object fun...
HMCM-22 with a Si:Al molar ratio of 15:1 has been shown to effectively catalyze the synthesis of acetals with 100% selectivity by the reaction of aldehydes with methanol under reflux conditions. Platelet HMCM-22 particles were prepared by the static strategy and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), BET tech...
introduction: gastro-esophageal reflux (ger) is common among children of different ages and treatment is necessary since it could turn in to gastroesophageal reflux disease (gerd) and cause complications. in patients that do not respond to medical treatment and patients that have complications such as repeated apnea, pneumonia, stricture caused by esophagitis and failure to thrive, surgical tre...
OBJECTIVE To assess the importance of iliac venous outflow obstruction in limbs with and without concomitant deep or superficial reflux, we performed a retrospective analysis of data contemporaneously entered into a set time-stamped electronic medical records program. MATERIAL AND METHOD Four hundred forty-seven limbs underwent iliac vein stenting of chronic, nonmalignant obstruction when gre...
urinary tract infection is a common pediatric problem and vesicoureteral reflux is its most common complication. detection of this reflux has classically been achieved by voiding cystouretrography (vcug). ultrasonography for evaluation of vesicoureteral reflux is shown to be feasible but is not widely accepted. our aim was to assess the value of routine sonography in detecting vesicoureteral re...
Background: Vesicoureteral reflux (urinary reflux) is one of the most common congenital anomalies in children. This study aimed to compare the ureteral opening distance from the midline in children with vesicoureteral reflux (VUR) and healthy children Methods: This cross-sectional study was performed on the children with pyelonephritis who were referred to Afzalipour Hospital in Kerman, Iran f...
Gastroesophageal reflux disease (GERD) is caused by abnormal reflux of gastric contents into the esophagus. GERD can be divided into two groups, erosive esophagitis and non-erosive reflux disease (NERD). The aim of this study was to compare the clinical characteristics of patients with erosive esophagitis to those with NERD. All participating patients underwent an upper endoscopy during a volun...
Abstract Background Gastro-oesophageal reflux disease (GORD) affects up to 20% of the Western population, and is usually associated with presence hiatus hernia (HH). Proton pump inhibitors (PPI) are mainstay treatment, but half PPI users have persistent symptoms. Anti-reflux surgery in form fundoplication HH repair can be considered patients unable tolerate or unwilling persevere long term medi...
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