GI Motility Online

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From the following article

Gastroesophageal reflux monitoring: pH and impedance

Radu Tutuian and Donald O. Castell

GI Motility online (2006)

doi:10.1038/gimo31

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Figure 1

Ambulatory pH catheter placement.

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Figure 2

Catheter free pH monitoring system (Bravo system).

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Figure 3

Reflux episode identified by pH monitoring as a rapid drop in pH from above to below 4.0 distally longer than proximal.

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Figure 4

Ambulatory pH monitoring tracings.

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Figure 5

Artifacts during pH monitoring.

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Figure 6

Impedance changes produced by liquid, mixed, or gas boluses.

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Figure 7

Direction of intraluminal bolus movement as detected by multichannel intraluminal impedance.

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Figure 8

Combined multichannel intraluminal impedance and pH catheter.

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Figure 9

Gastroesophageal reflux detected by combined multichannel intraluminal impedance and pH (MII-pH) monitoring.

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Figure 10

Suggested diagnostic gastroesophageal reflux disease (GERD) algorithm.

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Table 1 - Unfortunately we are unable to provide accessible alternative text for this. If you require assistance to access this image, or to obtain a text description, please contact npg@nature.com

Table 1

Normal values for ambulatory pH monitoring

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