1998
DOI: 10.1016/s0736-4679(98)80030-9
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Omeprazole as a diagnostic tool in gastroesophageal reflux disease

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Cited by 105 publications
(101 citation statements)
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“…Relief of symptoms with 1 wk of omeprazole 20 mg twice daily had a sensitivity of 75% and a specificity of 55% when compared with endoscopy and ambulatory pH testing (27). In another study, using pH as the gold-standard, an omeprazole trial had a positive and negative predictive value of 68% and 63%, respectively, and when the omepra- Practice Guidelines for GERD zole trial was considered the standard, the pH test had identical positive and negative predictive values (28). Neither a PPI trial nor ambulatory pH testing should be considered to provide absolute proof or disproof of GERD and in difficult cases both may be needed for the highest diagnostic certainty.…”
Section: Endoscopy In Gerdmentioning
confidence: 98%
“…Relief of symptoms with 1 wk of omeprazole 20 mg twice daily had a sensitivity of 75% and a specificity of 55% when compared with endoscopy and ambulatory pH testing (27). In another study, using pH as the gold-standard, an omeprazole trial had a positive and negative predictive value of 68% and 63%, respectively, and when the omepra- Practice Guidelines for GERD zole trial was considered the standard, the pH test had identical positive and negative predictive values (28). Neither a PPI trial nor ambulatory pH testing should be considered to provide absolute proof or disproof of GERD and in difficult cases both may be needed for the highest diagnostic certainty.…”
Section: Endoscopy In Gerdmentioning
confidence: 98%
“…11 For example, two studies revealed that 22 and 26% of patients with upper endoscopy documented erosive oesophagitis manifested normal 24-h pH probe test results. 12,13 Finally, in clinical practice the 24-h pH probe is not indicated for the routine evaluation of GERD but instead for the diagnosis of atypical symptomatology and for the assessment of subjects considering antireflux surgery. 14 Upper endoscopy also suffers flaws as a tool for diagnosing GERD.…”
Section: Introductionmentioning
confidence: 99%
“…For example, two studies noted frequencies of GERD in OSAS of 60 9 and 62%. 13 However, these studies asked for symptoms within the last 12 and 6 months while the validated questionnaire in this study asked for GERD symptoms within the last 4 weeks. A recent report did use a validated questionnaire and suggested that there was a significant correlation of GERD symptoms and the AHI.…”
mentioning
confidence: 99%
“…The poor performance of PPI test is further reinforced by the comparison with the placebo-test which adequately 'classified' nearly half of the patients (random results). However, these results are not entirely surprising as a good placebo response has also been reported in short-term trials in GERD [10,[16][17][18] . In addition, the above negative conclusions should be further balanced as far as negative predictive values are considered.…”
Section: Discussionmentioning
confidence: 67%