Normal values and regional differences in oesophageal impedance-pH metrics: a consensus analysis of impedance-pH studies from around the world

Sifrim, D; Roman, S; Savarino, E; Bor, S; Bredenoord, AJ; Castell, D; Cicala, M; de Bortoli, N; Frazzoni, M; Gonlachanvit, S; Iwakiri, K; Kawamura, O; Krarup, A; Lee, YY; Ngiu, CS; Ndebia, E; Patcharatraku, T; Pauwels, A; de la Serna, JP; Ramos, R; Remes-Troche, JM; Ribolsi, M; Sammon, A; Simren, M; Tack, J; Tutuian, R; Valdovinos, M; Xiao, YL; Zerbib, F; Gyawali, CP

Sifrim, D (corresponding author), Barts & London Queen Marys Sch Med & Dent, Blizard Inst, Wingate Inst Neurogastroenterol, London E1 2AJ, England.

GUT, 2021; 70 (8): 1441

Abstract

Objective Limitations of existing impedance-pH thresholds include small sample size of normative studies, inclusion of artefactual pH drops and incorr......

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