BACKGROUND/AIM The aetiology of gastro-oesophageal reflux is largely unknown. The authors' aim was to examine the relation between lifestyle habits and gastro-oesophageal reflux symptoms. SUBJECTS Participants of two consecutive public health surveys in Nord-Trondelag, Norway. METHODS In a case control study within the two public health surveys, 3153 individuals who in the second survey rep...

OBJECTIVES To ascertain the prevalence of Helicobacter pylori in patients with gastro-oesophageal reflux disease and its association with the disease. DESIGN Systematic review of studies reporting the prevalence of H pylori in patients with and without gastro-oesophageal reflux disease. DATA SOURCES Four electronic databases, searched to November 2001, experts, pharmaceutical companies, and...

BACKGROUND AND PURPOSE Deep venous reflux resolution after great saphenous vein surgery has been reported, but the studies evaluated mainly patients with deep segmental reflux. We prospectively analyzed the effects of greater saphenous vein ablation on coexisting primary deep axial venous reflux compared with segmental venous reflux. Patients and methods Between February 1997 and June 2001, pat...

HYSYS process modeling software was used to analyze the effect of reflux ratio and number of trays on the purity of ethylene in a vapor recompression distillation column and also in an ordinary distillation column. Analysis of data showed that with increased pressure a higher reflux ratio is needed to obtain a purity of 99.9% for both towers. In addition number of trays was varied to see its ef...

PURPOSE To assess the aqueous outflow pathway in primary open-angle glaucoma (POAG) through provocative gonioscopy and channelography with a flexible microcatheter and fluorescein tracer during canaloplasty. METHODS One eye each was randomly selected from 28 consecutive black African POAG patients undergoing canaloplasty. Provocative gonioscopy was performed at the beginning of surgery, and b...

The correlation between laryngo-pharyngeal reflux and dysphonia has been evaluated in patients without significant laryngoscopic findings and without vocal misuse. Studies were performed, using a validated questionnaire on typical reflux symptoms as well as instrumental means, e.g. videolaryngoscopy, multi-electrode 24-hr oesophageal pH monitoring, vocal acoustic analysis, gastro-oesophagoscopy...

A continuous melt suspension crystallization process has been presented for the purification of the phosphoric acid in this study, which is performed in the cascade of a mixed suspension mixed product removal (MSMPR) crystallizer and a gravity wash column for the subsequent solid-liquid separation. Dynamic behavior in the crystallizer and role of reflux ratio on the purification efficiency of c...

BACKGROUND The prevalence of gastroesophageal reflux disease varies in different parts of the world. There are no population based studies in Nigeria. The main objectives of this study were to determine the prevalence and risk factors for gastroesophageal reflux disease in a population of Nigerian medical students. METHODS The Carlsson-Dent questionnaire was administered to medical students i...

one-hundred and sixteen children with esrd were registered in shiraz pediatric hemodialysis center in nemazee hospital, a referral center in the south of iran, from 1990 to 1999. very small children are not dialysed in this center due to technical problems. the age range of children in this center was 2-16 years, mean age was 10.4±3.6 years and male to female ratio was 1.4. major causes of esrd...