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Difficulty: MediumHematology and Oncology

A 62-year-old man with myelodysplastic syndrome is receiving a transfusion of packed red blood cells for symptomatic anemia (hemoglobin 7.27.2 g/dL). Thirty minutes into the infusion, he reports the sudden onset of severe flank pain, chills, and shortness of breath. His temperature is 39.2∘C39.2^\circ \text{C} (102.6∘F102.6^\circ \text{F}), blood pressure is 85/5085/50 mm Hg, pulse is 118118/min, and respiratory rate is 2424/min. Physical examination reveals diaphoresis, and dark-colored urine is noted in his Foley catheter bag.

Arrange the following steps in the most appropriate sequential order for the immediate management of this patient's suspected acute hemolytic transfusion reaction.

  1. 1Stop the blood transfusion immediately
  2. 2Disconnect the blood tubing and maintain intravenous access with normal saline
  3. 3Perform a bedside clerical check of the patient's identification and the blood product label
  4. 4Send the remaining blood product, tubing, and fresh patient blood samples to the blood bank

Answer

The correct sequence is to first stop the transfusion immediately, then maintain intravenous access with normal saline using new tubing, perform a bedside clerical check, and finally send the blood product and patient samples to the blood bank.
The clinical presentation of fever, chills, hypotension, flank pain, and dark urine (hemoglobinuria) shortly after starting a blood transfusion is highly indicative of an acute hemolytic transfusion reaction (AHTR), most commonly caused by ABO incompatibility due to a clerical error. The immediate, step-by-step management is strictly protocolized to minimize harm. The absolute first step is to stop the transfusion to prevent further exposure. Second, intravenous access must be maintained for aggressive hydration to prevent acute kidney injury; crucially, the existing tubing must be disconnected and replaced with new tubing for normal saline to avoid flushing residual incompatible blood into the patient. Third, a bedside clerical check of the patient's ID and the blood product label should be performed to quickly identify obvious errors. Finally, the remaining blood product, attached tubing, and fresh patient blood and urine samples are sent to the blood bank for definitive testing (including a direct antiglobulin test, plasma free hemoglobin, and repeat crossmatch).

Step-by-Step Solution

1
Stop the transfusion immediately.
Prevents any further infusion of the incompatible blood product.
Immediate cessation is the most critical intervention to limit the severity of the hemolytic reaction and minimize immune-mediated organ damage.
2
Maintain IV access with normal saline using new tubing.
Ensures a patent intravenous route for aggressive fluid resuscitation.
The patient is hypotensive and at risk for acute tubular necrosis. The old tubing must be disconnected, not flushed, to prevent pushing residual incompatible blood into the circulation.
3
Perform a bedside clerical check.
Identifies potential ABO incompatibility due to misidentification.
Clerical error (e.g., giving the wrong blood to the wrong patient) is the leading cause of fatal acute hemolytic transfusion reactions and must be rapidly identified.
4
Send samples to the blood bank.
Initiates formal laboratory investigation.
Definitive diagnosis requires laboratory testing of the remaining blood product and fresh patient samples (including a direct antiglobulin test and repeat crossmatching).

Key Concept

The sequential management algorithm for acute hemolytic transfusion reactions prioritizes immediately stopping exposure, securing safe IV access for resuscitation, identifying clerical errors, and sending samples for diagnostic confirmation.
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Topics

Hematology and Oncology

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