Transfusion Threshold in an Older Patient With Cardiac Disease
A 79-year-old man with stable angina and prior CABG is admitted with a 2-day history of melena. He is alert, BP 128/74 mm Hg, HR 96/min, Hb 7.6 g/dL, Hct 23%, platelets 180 × 10^9/L, and INR 1.4. He is not actively bleeding, has no orthostatic symptoms, and his lactate is normal. He takes aspirin 81 mg daily and atorvastatin. The hospitalist orders 2 units of RBCs. The blood bank has O-negative units but is low on the patient's type (A-positive). The patient asks whether he really needs blood.
1. How should the decision to transfuse be made in this patient?
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Use a restrictive, symptom-guided approach. He is stable, not actively bleeding, and has normal lactate and no orthostatic symptoms. A restrictive threshold of 7 g/dL is appropriate for most stable hospitalized adults; stable coronary disease may prompt a higher threshold in selected patients, but it does not automatically mandate transfusion at 7.6 g/dL. If transfusion is chosen for symptoms or ongoing bleeding, give one unit and reassess rather than routinely giving two. Evaluate and treat iron deficiency and involve gastroenterology.
2. How should the blood bank respond to the order and the inventory constraint?
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Do not reserve O-negative units for a non-urgent, stable patient. Use type-specific A-positive RBCs after a current type and screen/crossmatch. Communicate with the clinician about the restrictive indication and the inventory constraint. Reserve O-negative units for emergency release or patients who truly require them. If transfusion is deferred, hold the type and screen and monitor the patient.
3. What patient blood management actions are indicated?
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Obtain iron studies and reticulocyte count, treat iron deficiency with oral or IV iron as appropriate, and monitor Hb and bleeding. Avoid unnecessary transfusion, use single-unit orders with reassessment, and document the indication. Discuss aspirin continuation with the clinical team rather than stopping it automatically. Provide the patient with education about symptoms that would prompt urgent evaluation.