In an acute epistaxis case with mild stertor and mildly enlarged lymph nodes, which diagnostic test would be most appropriate to perform first?

• A. CBC
• B. Urinalysis
• C. Thoracic Radiographs
• D. Endoscopy

Answer: (A)

When a patient presents with acute nosebleeds, the priority is to gauge the patient’s overall hematologic status to determine if the bleeding is due to local nasal disease or a systemic problem like anemia or a clotting issue. A complete blood count is the most informative first test because it quickly checks platelet numbers and function implications (which directly affect bleeding risk), measures red blood cell mass to assess for anemia from blood loss, and provides the white cell count to clue you in on infection or inflammation that could relate to the mildly enlarged lymph nodes. This information helps you decide whether you need urgent stabilization, treat a possible thrombocytopenia, or proceed to targeted imaging or endoscopy.

Urinalysis isn’t directly helpful for the acute epistaxis issue itself, as it won’t reveal the cause of the nosebleed or the immediate bleeding risk. Thoracic radiographs could be valuable later if you’re concerned about a nasal mass with metastasis or chest involvement, but they don’t address acute bleeding as the first step. Endoscopy can localize and potentially treat the source of bleeding, but it’s more informative after you’ve assessed hematologic status and ensured the patient can tolerate the procedure.