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Figures in Original Article by Philip G. Dinning

Colonic manometry and sacral nerve stimulation in patients with severe constipation

Department of Medicine University of New South Wales, St George Hospital, Kogarah, NSW 2217, Australia
(Fig. 1)

pre-defaecatory array of propagating sequences

Figure 1. The pre-defaecatory array of propagating sequences (PS). Note that with each PS approaching stool expulsion the site of origin of the PS shifts in an orad direction




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(Fig. 2) Table 1


sacral nerve stimulation in constipation
Table 1



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(Fig. 3)

Iso-contour map of antegrade colonic motility

Figure 2. Iso-contour map of antegrade colonic motility in a patient with severe slow transit constipation, pre- and post sacral nerve stimulation. Each individual ridge represents an individual propagating sequence (PS) at the time the PS was initiated. The start of each ridge indicates the site of origin of the PS and the length of the ridge the extent of propagation of the propagating sequence. The shades of grey within each ridge represent the amplitude of each individual propagating pressure wave. The map highlights the dramatic increase in the frequency, amplitude and extent of propagation of PSs during sacral nerve stimulation.


 

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