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Combined Esophageal Intraluminal Impedance, pH and Skin Conductance Monitoring to Detect Discomfort in GERD Infants

Figure 1

Example of combined MII/pH and SC monitoring.

Capital letters A to G represent seven consecutive 120-second intervals. The upper blue line represents the SC signal; black and gray arrows indicate stress-positive and stress-negative intervals, respectively. The lower red line represents pH monitoring; each of the six colored lines in the middle indicates one of the six MII channels (starting from the top at channel 1); the yellow vertical stripes indicate reflux events. The intervals A, D and G are negative for the both presence of reflux and stress. The interval B is positive for both reflux and stress. The intervals C and F are positive for stress only. In the interval E, a stress-negative reflux occurs.

Figure 1

doi: https://doi.org/10.1371/journal.pone.0043476.g001