Skip to main content
. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Gastroenterol Clin North Am. 2014 Dec 29;44(1):169–184. doi: 10.1016/j.gtc.2014.11.013

Figure 7.

Figure 7

An example of an irregular tachygastria defined by HR mapping, due to unstable ectopic events arising at multiple locations (stars; duration >200 seconds). The activity was mapped from the same patient and in the same location as that shown in Figure 6. Isochronal maps of 5 representative cycles (isochronal intervals = 1 s) showing chaotic tissue activation and wave collisions, resulting in a range or frequencies across the mapped field (1.4 –5.7 cpm). From O’Grady G, Angeli T, Du P et al. Abnormal initiation and conduction of slow wave activity in gastroparesis, defined by high-resolution electrical mapping. Gastroenterology. 2012;143:589–598; with permission.