Does (supra)gastric belching trigger recurrent hiccups?

Figure 1 Oesophageal intraluminal impedance monitoring combined with oesophageal pH measurements. A: Three minutes stretch of the tracings showing an abnormally low basal impedance with repetitive impedance peaks in all channels marked EV 1-4; B: Zoomed-in segment of the recording shows that an impedance peak (EV3) starts in the proximal channel, moves in the antegrade direction and is cleared in the retrograde direction. The horizontal bar represents 1.000 s. The patient reported severe belching at 10:30:00 during this period of repetitive supragastric belches (SGBs). Oesophageal pH is continuously below 4.