A portable electronic unit with no moving parts except button switches digitizes and stores a 48-hour record of the myoelectric activity of the stomach and heart as sensed via electrodes on the surface of the abdomen. Just as the more familiar electrocardiogram (ECG) is useful in diagnosing the condition of the heart, the digital electrogastrogram (EGG) that is also obtained by this portable data recorder is useful in assessing changes in gastric function.
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