A method detects and interprets myoelectrical activity from an intra-abdominal organ. Electrodes (12) obtain first signals (17) over time relating to myoelectrical activity of organ. A respiration sensor (14) obtains second signals (19) relating to resppiration of the patient. An initial parameter range of the first and second signals is established. A processor (28) determines minutes when artifact occurs in both the first and second signals based on the initial parameter range. It is then determined whether there are artifact free minutes of the first and second signals. A condition of the patient is changed after determining that there are sufficient artifact free minutes. The first and second signals are recorded in memory (38) simultaneously for a period of time after changing the condition of the patient. A processor determines whether artifact occurs in the recorded first and second signals. Artifact free minutes of the recorded first and second signals are selected for analysis. Via the processor, the selected minutes are analyzed to automatically determine a condition of the organ.
