Electrogastrographic characteristics in subjects with stomach remnant

Abstract

Distal RSG patients may have decreased SW frequency and less meal ingestion changed EGG parameters in terms of SW frequency, normality and stability, whereas their EGG power remained unchanged irrespective of meal ingestion.

Clinical Application of Electrogastrography in Patients with Stomach Cancer Who Undergo Distal Gastrectomy

“…However, it did reveal significant temporal differences in the percentage of bradygastria for postprandial recordings between 1 week and 3 months and between 1 week and 6 months but not between 3 months and 6 months. Unlike other studies that obtained a DF of ~3 cpm in the gastric remnant, Lee et al18 found that distal RSG patients had a lower DF value with an increased percentage of bradygastria (<2 cpm) irrespective of meal ingestion. Bracci et al28 observed the less common 3 cpm with an increased chance of bradygastria in children who underwent partial gastrectomy to augment bladder function.…”

“…Some changes in EGG parameters occur in the early days after subtotal gastrectomy 17. Lee et al18 enrolled subjects for distal robotic sleeve gastrectomy (RSG) who had undergone stomach surgery at least 1 year previously. Homma et al19 reported that a series of regular peaks of 3 cpm activity were not clearly visible in the EGGs running spectra recorded from patients who had undergone a distal gastrectomy with a short postoperative period (13~71 days in 13 subjects).…”

“…Hayashi et al21 pointed out that proximal subtotal gastrectomy subjects with more than half of the stomach resected had lower percentages of normal rhythm, DF, and even DP compared with those with greater stomach preservation. Lee et al18 suggested that removal of part of the main pacemaker in distal RSG patients leads to an increased percentage of bradygastria and that the ectopic pacemaker of the rest of the stomach in lower frequency values would replace the originally removed main pacemaker cells to dominate the gastric SW rhythm. Murakami et al30 reported that longer periods of normal gastric function (normogastria, 2.0~4.0 cycles min -1 ) were detected in channel 1 in the vagus nerve-preserving distal gastrectomy group (VP-DG) than in the standard distal gastrectomy without vagus nerve preservation group (DG) in either the fasted or fed state (P<0.05).…”

Arrhythmias in the gut

“…However, we do not yet know how stable this location is, what would make it potentially shift to another location nor do we know anything about potential variations between individuals. And we certainly do not know what happens to the pacemaker in pathophysiological conditions nor during gastric surgery . For example, in the gastric sleeve operation, the natural pacemaker is most probably removed, but we have no information if a subsidiary pacemaker would emerge, or anything about its location or rhythm.…”

“…And we certainly do not know what happens to the pacemaker in pathophysiological conditions nor during gastric surgery. 35,36 For example, in the gastric sleeve operation, the natural pacemaker is most probably removed, but we have no information if a subsidiary pacemaker would emerge, or anything about its location or rhythm.…”