Normal values and regional differences in oesophageal impedance-pH metrics: a consensus analysis of impedance-pH studies from around the world.
Daniel SifrimSabine RomanEdoardo SavarinoSerhat BorAlbert J BredenoordDonald CastellMichele CicalaNicola de BortoliMarzio FrazzoniSutep GonlachanvitKatsuhiko IwakiriOsamu KawamuraAnne KrarupYeong Yeh LeeChai Soon NgiuEugene NdebiaTanisa PatcharatrakuAns PauwelsJulio Pérez de la SernaRosa Isabel RamosJose Maria Remes-TrocheMentore RibolsiAlastair SammonMagnus SimrenJan TackRadu TutuianMiguel ValdovinosYinglian XiaoFrank ZerbibChandra Prakash GyawaliPublished in: Gut (2020)
Normal impedance-pH monitoring thresholds have regional and system-related differences. Clinical interpretation needs to use normal thresholds valid for the system used and world region, following careful editing of the tracings.