A nurse is reinforcing discharge instructions to a client who has a peptic ulcer. Which of the following information should the nurse reinforce to the client prior to discharge?

Brief Introduction: Peptic ulcer disease carries a high risk of gastrointestinal hemorrhage if the ulcer erodes into an underlying blood vessel. When bleeding occurs in the upper GI tract, the hemoglobin is partially digested by gastric acid and enzymes, resulting in a characteristic change in the appearance of the stool known as melena. Rationale: A. Ecchymosis on the flanks (Grey Turner's sign) or around the umbilicus (Cullen's sign) is a classic indicator of retroperitoneal hemorrhage, which is most commonly associated with acute pancreatitis. A perforated ulcer can cause internal bleeding, but it does not typically manifest as superficial abdominal bruising. B. Unintentional weight gain is usually associated with fluid retention or edema, often seen in heart failure, renal disease, or cirrhosis with ascites. Conversely, clients with peptic ulcers are more likely to experience weight loss due to an avoidance of food reflex, as eating may trigger epigastric pain. C. Maroon or red-colored urine (hematuria) indicates a problem within the renal or urologic systems, such as a urinary tract infection or nephrolithiasis. While upper GI bleeding can cause maroon-colored stools (hematochezia) if the transit time is very fast, it has no physiological path to enter the urinary tract. D. Monitoring for dark or black-colored stool is the highest priority because it indicates the presence of digested blood. This tarry appearance is a critical warning sign of a slow-bleeding ulcer. Early detection of melena allows for prompt intervention before the client develops hypovolemic shock or severe anemia.