Final answer:
For a patient with hemophilia, reporting tarry stools is critical as it indicates potential serious internal bleeding and requires immediate medical attention.
Step-by-step explanation:
In the context of hemophilia, the most critical problem a patient can report that should be communicated to the health care provider is tarry stools. This symptom can indicate a serious internal bleeding issue, potentially within the gastrointestinal tract. While leg bruises, skin abrasions, and bleeding gums are also concerning for a patient with hemophilia, tarry stools signal the possibility of a significant bleeding episode that requires immediate medical attention. Hemophilia is characterized by an inadequate production of clotting factors, which leads to uncontrolled bleeding from even minor injuries. The biggest concerns are instances of internal bleeding, such as into the joints or, potentially more serious, within the gastrointestinal system, as suggested by tarry stools. Prompt communication with the health care provider could be life-saving in such scenarios.