Figure 2.

Electrogastrographic alterations. Series of alterations in the gastric myoelectric activity recorded with an electromyographic and manometric technique from the gastric antrum of patients with severe gastroparesis in confront with (A) normal myoelectric activity recorded in a healthy subject showing slow waves of normal morphology and frequency of 3 cycles/min. B: Tachygastria; C: Bradygastria; D: Run of high frequency tachygastria; E: Bradyarrhythmia; F: Complete disorganization of myoelectric activity (“gastric fibrillation”). Note that all these alterations are associated with absence of gastric contractions[1]. EMG: Gastric myoelectric; Pn: Pneumogram; P: Pressure.