A 72-year-old man is admitted to the hospital with community-acquired pneumonia. He has a history of hypertension and chronic kidney disease. He reports fatigue and mild shortness of breath but denies chest pain, dizziness, or syncope. Physical examination shows a temperature of 38.2°C (100.8°F), blood pressure of 128/76 mm Hg, pulse of 96/min, and oxygen saturation of 95% on room air. Laboratory studies show the following:
Hemoglobin: 6.8 g/dL
Hematocrit: 21%
White blood cell count: 15,000/mm³
Platelet count: 240,000/mm³
The patient is hemodynamically stable and has no evidence of active bleeding.
Which of the following is the most appropriate next step in management?
The correct answer is:
D) Transfuse packed red blood cells
Packed red blood cell (PRBC) transfusion is indicated in patients with severe anemia, particularly when the hemoglobin concentration is less than 7 g/dL, even in the absence of active bleeding. Current transfusion guidelines generally support a restrictive transfusion strategy, with transfusion recommended at a hemoglobin threshold of <7 g/dL in stable hospitalized adults. PRBC transfusion increases oxygen-carrying capacity and rapidly corrects severe anemia.
Answer choice A: Administer intravenous iron therapy, is incorrect. Intravenous iron may be appropriate for iron deficiency anemia, but it does not rapidly correct severe anemia. A patient with a hemoglobin of 6.8 g/dL meets criteria for PRBC transfusion.
Answer choice B: Begin erythropoietin therapy, is incorrect. Erythropoietin may be used in selected patients with chronic kidney disease or chemotherapy-induced anemia. However, its effects take weeks to occur and it is not appropriate as the sole treatment for severe anemia requiring immediate correction.
Answer choice C: Observe and repeat hemoglobin measurement in 24 hours, is incorrect. Observation alone is inappropriate because the patient's hemoglobin is below the generally accepted transfusion threshold of 7 g/dL.
Answer choice E: Transfuse platelets, is incorrect. Platelet transfusions are indicated for thrombocytopenia or platelet dysfunction associated with bleeding risk. This patient has a normal platelet count.
Key Learning Point
Packed red blood cell transfusion is generally indicated in stable hospitalized adults when the hemoglobin concentration is less than 7 g/dL. PRBC transfusion rapidly increases oxygen-carrying capacity and is preferred over therapies such as iron supplementation or erythropoietin when immediate correction of severe anemia is needed.
