# Clinical context Twelve minutes after a red-blood-cell transfusion begins, a client develops sudden chills, severe low-back pain, chest tightness, hypotension, tachycardia, and dark-red urine, requiring an immediate response for a serious transfusion reaction with hemolysis and shock risk. Place the actions in the safest sequence.

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=522660&lang=en  
> language: en  
> subject: Adverse Effects/Contraindications/Interactions  
> category: PPT

## Question

Clinical context
Twelve minutes after a red-blood-cell transfusion begins, a client develops sudden chills, severe low-back pain, chest tightness, hypotension, tachycardia, and dark-red urine, requiring an immediate response for a serious transfusion reaction with hemolysis and shock risk.

Place the actions in the safest sequence.

Notify the prescriber and transfusion service and perform the required client-unit clerical recheck.

Trend vital signs, urine output, hemolysis and renal studies, coagulation findings, and culture results while treatment is adjusted.

Stop the transfusion, disconnect the suspect tubing, call for help, and assess airway, breathing, and circulation.

Send the preserved bag and tubing and obtain ordered patient specimens, including blood cultures when contamination is suspected.

Maintain venous access with new normal-saline tubing and begin authorized supportive treatment.

## Explanation

The response first ends exposure and stabilizes the client, then activates the transfusion service, preserves diagnostic evidence, obtains appropriate specimens, and closes the loop with serial reassessment.

## In-depth explanation

Quick answer
Sequence stop, stabilize, notify, investigate, and trend.

Why this is correct
Many tasks occur rapidly in parallel, but culture collection never justifies continuing the transfusion or delaying cardiorespiratory support.

Easy analogy or mental picture
Treat every infusion as a controlled clinical system: verify the product and access, recognize a changing cue, stop preventable exposure, stabilize the client, and confirm the response.

Memory hook
Product, access, compatibility, infusion cue, protective action, and reassessment.

NCLEX decision rule
Choose the action that prevents the most immediate infusion-related harm while preserving vascular access and the ordered diagnostic evidence.

Why the other choices are wrong
Options that restart a suspect product, bypass a safety device, force an occluded tube, or delay reassessment can convert a reversible warning into serious harm.References
1CDC NHSN Hemovigilance Module Surveillance Protocol, January 2026Definitions and clinical patterns for acute hemolytic reaction, TACO, TRALI, and transfusion-transmitted infection
2CDC Clinical Guidance for Bacterial Contamination and Blood SafetyStop a suspected contaminated transfusion, preserve the unit, culture the patient, and investigate the residual component
3FDA-recognized Circular of Information for Blood and Blood ComponentsTransfusion reaction recognition, immediate discontinuation, product investigation, and supportive care

## Clinical scenario

Clinical context
Twelve minutes after a red-blood-cell transfusion begins, a client develops sudden chills, severe low-back pain, chest tightness, hypotension, tachycardia, and dark-red urine, requiring an immediate response for a serious transfusion reaction with hemolysis and shock risk.

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