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Maximal Acid Output (maximal + acid_output)
Selected AbstractsGastro-oesophageal reflux disease in AsiaJOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY, Issue 3 2000Khean-Lee Goh Abstract Gastro-oesophageal reflux disease (GORD) occurs more frequently in Europe and North America than in Asia but its prevalence is now increasing in many Asian countries. Many reasons have been given for the lower prevalence of GORD in Asia. Low dietary fat and genetically determined factors, such as body mass index and maximal acid output, may be important. Other dietary factors appear to be less relevant. Increased intake of carbonated drinks or aggravating medicines may influence the increasing rates of GORD in some Asian countries but no strong evidence links other factors, such as the age of the population, smoking or alcohol consumption, to GORD. The management of GORD in Asia is similar to that in Europe and North America but the lower incidence of severe oesophagitis in Asia may alter the approach slightly. Also, because Asians tend to develop stomach cancer at an earlier age, endoscopy is used routinely at an earlier stage of investigation. Gastro-oesophageal reflux disease is essentially a motility disorder, so short-term management of the disease can usually be achieved using prokinetic agents (or histamine (H2)-receptor antagonists). More severe and recurrent GORD may require proton pump inhibitors (PPI) or a combination of prokinetic agents and PPI. The choice of long-term treatment may be influenced by the relative costs of prokinetic agents and PPI. © 2000 Blackwell Science Asia Pty Ltd [source] Comparison of the effects of intravenously and orally administered esomeprazole on acid output in patients with symptoms of gastro-oesophageal reflux diseaseALIMENTARY PHARMACOLOGY & THERAPEUTICS, Issue 9 2005D. C. METZ Summary Background :,Intravenous esomeprazole may be beneficial for patients who cannot take oral medications. Aim :,To compare intravenous esomeprazole with oral esomeprazole for effects on maximal acid output during pentagastrin stimulation in patients with gastro-oesophageal reflux disease symptoms. Methods :,In four separate open-label, randomized, two-way crossover studies, adult patients were administered esomeprazole 20 or 40 mg once daily either orally or intravenously (by 15-min infusion or 3-min injection) for 10 days and switched to the other formulation with no washout period. Basal acid output and maximal acid output were measured on days 11, 13 and 21. Results :,In the four studies (total of 183 patients), least-squares mean maximal acid output ranged from 3.0 to 4.1 mmol/h after intravenous esomeprazole 40 or 20 mg and from 2.2 to 3.3 mmol/h after oral esomeprazole 20 or 40 mg. Differences between formulations were small and not statistically significant but did not meet the prospectively defined criterion for non-inferiority of the intravenous formulation. Median basal acid output values ranged from 0.04 to 0.27 mmol/h after intravenous administration and from 0.05 to 0.25 mmol/h after oral esomeprazole. Conclusions :,Intravenous esomeprazole is an acceptable alternative to the oral formulation for treatment of up to 10 days of duration. [source] Evaluation of the pharmacokinetics and pharmacodynamics of intravenous lansoprazoleALIMENTARY PHARMACOLOGY & THERAPEUTICS, Issue 10 2004J. W. Freston Summary Aim :,To compare the pharmacokinetics and pharmacodynamics of lansoprazole 30 mg administered intravenously in 0.9% NaCl or in polyethylene glycol, or orally. Methods :,Twenty-nine subjects received lansoprazole orally on days 1,7 and intravenous lansoprazole in NaCl on days 8,14. Blood samples were collected on days 1, 7, 8 and 14. Fasting basal acid output and pentagastrin-stimulated maximal acid output were determined on days ,1, 8, 9 and 15. Thirty-six different subjects received one of four regimen sequences: intravenous lansoprazole in NaCl, intravenous in polyethylene glycol, per orally, or intravenous placebo, each for 5 days. Twenty-four hour intragastric pH was recorded on days 1 and 5. Results :,Intravenous and per oral lansoprazole for 7 days produced equivalent basal acid output and maximal acid output suppression. Pharmacokinetics and mean pH values with intravenous lansoprazole in NaCl or polyethylene glycol were equivalent. Both produced mean pH and percentages of time pH above 3, 4, 5 and 6 that were significantly greater than did per orally. Conclusions :,Intravenous lansoprazole inhibits acid secretion as effectively in NaCl as in polyethylene glycol, and its onset of action is faster than per oral lansoprazole. [source] | ||||||||||