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Functional evaluation of the rectal ampulla with ampullometrogram

M P Bubrick, C J Godec, A S Cass

Journal of the Royal Society of Medicine

|April 1, 1980

Summary

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Ampullometrogram (AMG) effectively assesses rectal function, correlating with cystometrogram (CMG) results in patients with bladder dysfunction. This method aids in diagnosing bowel issues and exploring treatments for incontinence and constipation.

Area of Science:

Urology
Gastroenterology
Neuroscience

Background:

The rectal ampulla's function is crucial for defecation and continence.
Evaluating its functional capacity aids in diagnosing various bowel dysfunctions.

Purpose of the Study:

To assess the rectal ampulla as a functional unit using ampullometrogram (AMG).
To compare AMG results with cystometrogram (CMG) findings.
To explore AMG's potential clinical applications.

Main Methods:

An ampullometrogram (AMG) was performed on 20 patients.
Results were compared with concurrent cystometrogram (CMG) data.
Normal, hyporeflexic, and hyperreflexic AMG curves were identified.

Main Results:

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Normal AMG curves (capacity 230-330 ml, pressure 47-80 cmH2O) were observed in 14/16 patients with normal CMGs.
Hyporeflexic AMG (variable capacity, no pressure increase) occurred in 3/5 patients with hyporeflexic CMGs.
One patient with a hyperreflexic CMG showed a hyperreflexic AMG (capacity <175 ml, pressure >80 cmH2O).

Conclusions:

Ampullometrogram (AMG) appears to be a reliable method for evaluating rectal ampulla function.
AMG shows promise as a diagnostic tool for bladder and neurogenic bowel dysfunction.
This technique may inform functional electrical stimulation for fecal incontinence and constipation.