Figures and Tables
![]() | Fig. 1Patterns of gas movement as recorded on 24-hr pH impedance testing. Air enters the proximal part of esophagus and travels downward rapidly. Impedance levels shows rapidly antegrade rise of signals in the proximal channels and progressing to the distal impedance channels. Thereafter, the air is cleared from the distal esophagus to oral side. Impedance levels shows rapid return of impedance signals from the distal to proximal impedance channels. |
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