A nurse is collecting data from a client who has a gastric ulcer. Which of the following should the nurse identify as a priority finding and notify the provider?

A. Weight loss of 2 lb (0.91 kg) from baseline: Unintentional weight loss can indicate chronic illness or poor intake, but a 2-lb loss is relatively small and not an immediate sign of complication. B. Dyspepsia: Dyspepsia (indigestion) is a common symptom of gastric ulcers and while important to manage, it is not an acute red flag requiring immediate notification. C. Reports being thirsty: Thirst suggests dehydration or inadequate fluid intake; it is addressable and not a specific sign of a life-threatening ulcer complication. D. Abdominal pain radiating to the shoulder: Shoulder pain with abdominal pathology suggests diaphragmatic irritation from perforation or intra-abdominal hemorrhage (referred pain via phrenic nerve) - this can indicate a surgical emergency and must be reported immediately.