Diarrhea

With diarrhea, the stool is the visible symptom; the time-sensitive problem is loss of water and electrolytes. A patient can deteriorate from reduced circulating volume before the stool count looks dramatic, especially an infant, an older adult, or a person who cannot replace ongoing losses. The practical sequence is to identify the likely pattern, assess hydration and perfusion, replace fluid safely, and escalate when the findings indicate invasive infection or shock. In a Canadian setting, administer medications and IV therapy only within the applicable order, provincial scope, employer policy, and local protocol. An RPN who detects altered mental status, poor perfusion, or suspected shock should obtain immediate assistance rather than continuing routine oral management.