A nurse is caring for a school-age child who has gastroesophageal reflux (GER). Which of the following findings is the nurse's priority?

Rationale: A. A chronic cough can occur in gastroesophageal reflux (GER) due to irritation of the airway from refluxed stomach acid. While this is an important chronic symptom that may indicate ongoing aspiration or airway irritation, it is not immediately life-threatening compared with gastrointestinal bleeding. B. Vomiting is a common manifestation of GER in children and may lead to discomfort, dehydration, or nutritional concerns if persistent. However, it is not the most urgent or priority finding when compared with signs of possible gastrointestinal bleeding. C. Heartburn is a classic symptom of GER caused by acid irritation of the esophageal lining. Although uncomfortable and important to manage, it is not an emergency finding and does not indicate acute deterioration. D. Melena (black, tarry stools) indicates upper gastrointestinal bleeding, which is a priority finding. In a child with GER, this may suggest erosion or ulceration of the esophageal or gastric lining leading to bleeding. This requires immediate evaluation because it can indicate significant blood loss and potential hemodynamic instability. Therefore, it is the priority finding.