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  • Title: [Value of long-term ambulatory pH-metry in the assessment of patients with reflux esophagitis].
    Author: Tomás-Ridocci M, Molina R, Monforte A, Peña A, Mora F, Benages A, Bernal JC.
    Journal: Rev Esp Enferm Dig; 1993 Dec; 84(6):351-6. PubMed ID: 8129988.
    Abstract:
    The aim of this study is to analyze different reflux-patterns by 24-hour ambulatory pH-metry and to correlate them with clinical symptoms and intensity of esophagitis. 115 patients (50 males/65 females) with a median age of 47 +/- 16 years, typical reflux symptoms have been studied and classified attending to the grade of esophagitis microscopically only 17 cases and endoscopically (grade I = 29, grade II = 44 and grade III/IV = 25 patients). Demeester's score has been used for clinical evaluation. Ambulatory pH-metry has been done with a Holter Synectics Digitrapper MK II, which registered intraesophageal pH-variations every 4 seconds during 24 hours. 28 normal subjects (13 males/15 females) with a median age of 51 +/- 16 years are referred as the control group. Clinical symptoms became more intensified when pH-metric alterations resulted more evident. Thoracic pain was noted in 12 from 115 patients, increasing its frequency in parallel fashion to that of the degree of esophagitis (6% in grade 0, 9% in grades I/II and 20% in grades II/IV). With increasing grades of esophagitis all parameters departed from normality, with significant differences between median values of the different parameters (to the exception of reflux episodes) when comparing patients with low-grade esophagitis (O/I) and high-grade esophagitis (II/III/IV). There is an excellent correlation between severity of esophagitis and % of time to acid exposure (Spearman's correlation coefficient). Only 5% of the patients with esophagitis presented normal pH-metry values and corresponded to esophagitis grade O/I. No patient had only a night reflux pattern, but 10% of our patients had only a day reflux pattern, the mixed pattern being the most frequent one (85%). The fact that 82% of our patients with microscopical esophagitis had a pathological pH-metry recommends the use this method in patients with clinical reflux symptoms and with normal endoscopy.
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