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J R Soc Med. 1980 April; 73(4): 234–237.
PMCID: PMC1437451

Functional evaluation of the rectal ampulla with ampullometrogram1


An ampullometrogram (AMG) was done in 20 patients to evaluate the rectal ampulla as a functional unit. Results were compared to a cystometrogram (CMG). The AMG displayed a normal curve (capacity 230 to 330 ml; pressure 47 to 80 cmH2O) in 14 of 16 patients having a normal CMG. The AMG was hyporeflexic (variable capacity; no increase in pressure at capacity) in 3 of 5 patients having a hyporeflexic CMG and hyperreflexic (capacity less than 175 ml, pressure over 80 cmH2O) in one patient having a hyperreflexic CMG. This technique might represent a useful clinical adjunct in the evaluation of bladder dysfunction, the evaluation of neurogenic type bowel dysfunction, and in the possible use of functional electrical stimulation for treatment of faecal incontinence or constipation.

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Selected References

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  • Brocklehurst JC. Management of anal incontinence. Clin Gastroenterol. 1975 Sep;4(3):479–487. [PubMed]
  • CALLAGHAN RP, NIXON HH. MEGARECTUM: PHYSIOLOGICAL OBSERVATIONS. Arch Dis Child. 1964 Apr;39:153–157. [PMC free article] [PubMed]
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Articles from Journal of the Royal Society of Medicine are provided here courtesy of Royal Society of Medicine Press