Final answer:
Stop bowel irrigation in toxic ingestions when the patient develops dysrhythmias, signaling possible life-threatening complications.
Step-by-step explanation:
One indication to stop treatment of bowel irrigation in toxic ingestions is when the patient develops dysrhythmias. Bowel irrigation is used in certain poisoning cases to remove the ingested substance from the gastrointestinal tract. However, if the patient experiences significant adverse effects such as dysrhythmias (abnormal heart rhythms), which can be life-threatening, it is an indication to cease treatment.
Dysrhythmias could signal electrolyte imbalances or direct cardiac effects of the toxic substance that was ingested. Although the patient's rectal effluent being clear may indicate that the bowel is free of the toxicant, and the patient awaking might suggest an improvement, these are not immediate grounds to stop irrigation. Vomiting can be a concerning sign but does not necessarily mean the irrigation must be stopped unless it leads to an inability to continue the treatment or further complications.