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논문 기본 정보

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학술저널
저자정보
Michel R Fernandes (Faculdade de Medicina Universidade de Passo Fundo (UPF) Passo Fundo-RS Brazil) Marina De Oliveira (Faculdade de Medicina Universidade de Passo Fundo (UPF) Passo Fundo-RS Brazil) Sidia M Callegari-Jacques (Departamento de Estatística Instituto de Matemática e Estatística Universidade Federal do Rio Grand) Gissele V R Gonçalves (Programa de Pós-Graduação: Ciências em Gastroenterologia Hepatologia Universidade Federal do Rio Gr) Fernando Fornari (Programa de Pós-Graduação em Odontologia da UPF Passo Fundo-RS Brazil)
저널정보
대한소화관운동학회(현 대한소화기능성질환.운동학회) Journal of Neurogastroenterology and Motility (JNM) Journal of Neurogastroenterology and Motility (JNM) Vol.24 No.2
발행연도
2018.1
수록면
233 - 240 (8page)

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Background/Aims Evaluation of esophageal clearance by orange juice swallowing could be useful to identify different categories of gastroesophageal reflux disease. We determined whether a juice test at the beginning of esophageal pH monitoring can identify nonerosive reflux disease (NERD) among heartburn patients. Methods Multiple swallows of orange juice (pH 3) were performed at the beginning of esophageal pH monitoring in 71 heartburn patients off acid-suppressive therapy. The area between pH drop below 5 and recovery to 5 was calculated from pH tracings and named Delta5 (mmol·L−1·sec). Fifteen healthy subjects served to determine Delta5 cutoff (95th percentile). Patients were classified as NERD, non-NERD (a mix of reflux hypersensitivity, functional heartburn, and undetermined), and erosive disease depending on acid exposure, reflux symptom analysis, and upper endoscopy. Results Delta5 cutoff in healthy subjects was 251 mmol·L−1·sec. Among 71 patients, 23 had NERD, 26 had non-NERD, and 22 had erosive disease. Compared to non-NERD, Delta5 was higher in both NERD (median [interquartile range]: 316 [213–472] vs 165 [105–225]; P < 0.01) and erosive disease (310 [169–625] vs 165 [105–225]; P < 0.01). An elevated Delta5 (> 251 mmol·L−1·sec) showed sensitivity of 74% and specificity of 81% for identification of NERD. Positive and negative likelihood ratios were 3.84 and 0.32 respectively, whereas test accuracy was 78%. Conclusions A juice test with calculation of Delta5 helps in the identification of true NERD among heartburn patients with endoscopy-negative reflux disease. In these patients, an elevated Delta5 could make prolonged reflux testing unnecessary.

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