A nurse is caring for a patient with peptic ulcer disease who reports a sudden onset of sharp abdominal pain and, on palpation, the client's abdomen is tense and rigid. What action takes priority?

Choice A rationale Percussing the abdomen is a part of a comprehensive assessment but is not the immediate priority in this acute situation. A sudden onset of sharp pain with a rigid abdomen suggests a potential perforation, which is a life-threatening emergency. The priority is to act on this clinical suspicion to prevent rapid deterioration. Choice B rationale Taking vital signs is an important nursing action, but in a suspected perforation, it is not the first priority. While vital signs will likely show signs of shock (e.g., hypotension, tachycardia), the most critical action is to alert the healthcare provider so definitive intervention can be initiated without delay. Choice C rationale A sudden onset of sharp abdominal pain combined with a tense, rigid abdomen suggests a ruptured peptic ulcer, which is a medical emergency due to the release of gastric or duodenal contents into the peritoneal cavity. This can lead to peritonitis and sepsis, requiring immediate surgical intervention. Choice D rationale Administering pain medication without a definitive diagnosis and plan of care could mask critical symptoms and delay necessary surgical intervention. While managing pain is important, it is secondary to addressing the underlying life-threatening emergency of a potential perforation.