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acid peptic disorders
 

acid peptic disorders

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  • Antacids may be no more effective than placebo <br /> This slide and the one that follows provide data supporting statements made on the previous slide. <br /> Although antacids have been the traditional therapy for GERD for many years and are still widely used, there is little evidence concerning their efficacy. Indeed, the results of some studies suggest that antacids may be no more effective than placebo in alleviating symptoms and influencing the natural history of the disease. <br /> For example, in one study, an antacid was compared with placebo in 32 patients with symptomatic gastroesophageal reflux (1). The two test treatments, each taken 7 times daily, both produced significant increases in the time needed to reproduce heartburn with a timed acid perfusion (Bernstein) test. However, the mean increase was somewhat greater with placebo (169 +/- 66 versus 41 +/- 20 seconds, or 4.1-fold) than with the antacid (120 +/- 57 versus 42 +/- 16 seconds, or 2.9-fold). <br /> (1) Graham, Patterson. Dig Dis Sci 1983; 28: 559–63. <br />
  • PPIs are the most effective drugs for the initial treatment of GERD <br /> This figure is taken from a meta- analysis of randomized, single- or double-blind clinical trials conducted in GERD patients with endoscopically proven erosive or ulcerative esophagitis (1). The meta-analysis incorporated a total of 43 studies involving 7635 patients treated for 2–12 weeks. <br /> The figure shows that, for all time points between 2 and 12 weeks, the mean percentage of patients in whom esophagitis was healed was considerably higher with PPIs than with H2RAs. Notably, the mean proportion healed after 2 weeks with PPIs (63.4%) was similar to the mean proportion healed after 12 weeks with H2RAs (60.2%). The overall proportion of cases healed, regardless of the duration of treatment, was 83.6% with PPIs, 51.9% with H2RAs and 28.2% with placebo (p &lt; 0.0005 between groups). <br /> (1) Chiba et al. Gastroenterology 1997; 112: 1798–810. Reproduced with permission from the American Gastroenterological Association. <br />

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