Acute Hemolytic Transfusion ReactionMANAGEMENT

HEMATOLOGIC AND ONCOLOGIC PRESENTATIONS · 12 SECTIONS

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572 items

☷ Legend

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Cardiovascular Presentations71▾

Respiratory Presentations52▾

Neurological Presentations83▾

Gastrointestinal Presentations74▾

Genitourinary and Reproductive Presentations48▾

Infectious Disease Presentations148▾

Trauma Presentations89▾

Toxicologic Presentations80▾

Psychiatric Presentations26▾

Musculoskeletal and Rheumatologic Presentations96▾

Dermatology Presentations23▾

Environmental and Exposure Presentations27▾

Hematologic and Oncologic Presentations36▾

Acute chest syndrome Acute Hemolytic Transfusion Reaction Anticoagulant reversal (warfarin, DOAC, heparin)Aplastic Anemia (Crisis)Autoimmune Hemolytic Anemia CAR-T and cytokine release syndrome Coagulopathy Delayed Hemolytic Transfusion Reaction Disseminated Intravascular Coagulation (DIC)Essential Thrombocythemia Febrile Non-hemolytic Transfusion Reaction Graft Versus Host Disease (Acute)Hemolytic Uremic Syndrome (HUS)Hemophilia A (Bleeding Crisis)Heparin-Induced Thrombocytopenia (HIT)Hyperviscosity syndrome Immune checkpoint inhibitor toxicity Immune Thrombocytopenic Purpura (ITP)Leukemoid Reaction Leukostasis Massive transfusion protocol Myelofibrosis Neutropenic enterocolitis (typhlitis)Paroxysmal Nocturnal Hemoglobinuria Polycythemia Vera (Crisis)Pure Red Cell Aplasia Sickle Cell (Acute Chest Syndrome)Sickle Cell (Splenic Sequestration)Sickle cell crisis (vaso-occlusive)Symptomatic anemia Thrombocytopenia (severe)Thrombotic Thrombocytopenic Purpura (TTP)Transfusion-Associated Circulatory Overload (TACO)Transfusion-Related Acute Lung Injury (TRALI)Tumor lysis syndrome Von Willebrand Disease (Bleeding)

Pediatric-Specific Presentations19▾

Endocrine and Metabolic Presentations45▾

ENT and Maxillofacial Presentations27▾

Ophthalmologic Presentations19▾

Obstetric Presentations23▾

Systemic and Miscellaneous Presentations17▾

01Approach to the Critical Patient/attcp54

Immediate priorities

›First-second actions

›Stop the transfusion immediately

›Do not flush the existing line

›Disconnect tubing at the catheter hub

›Maintain IV access with normal saline through a new line

›Fresh tubing to avoid further antigen exposure

›Wide-open isotonic crystalloid for perfusion

›Save the unit, tubing, and all attached components

›Return to blood bank for serologic analysis

›Quarantine co-components from the same donation

›Airway and breathing threats

›Anaphylactoid overlap

›Stridor or angioedema

›Bronchospasm with wheeze

›Oxygenation failure

›SpO2 < 90% on room air

›PaO2 < 60 mmHg

›If airway compromise, prepare for definitive airway control

›Rapid sequence intubation readiness

›Anesthesia or critical care at bedside

›Circulation and shock threats

›Hemolysis-driven shock physiology

›SBP < 90 mmHg

›MAP < 65 mmHg

›Massive intravascular hemolysis markers

›Gross hemoglobinuria

›Sense of impending doom

02History/hx54

Presentation pattern

›Classic triad

›Fever

›Temperature rise >= 1 C from baseline

›Chills and rigors

›Flank or back pain

›Renal capsular distension

›Pain at the IV infusion site

›Dark or reddish urine

›Hemoglobinuria

›Onset during or soon after transfusion

›Temporal relationship

›Symptom onset within minutes to 24 hours of transfusion start

›Minutes for ABO incompatibility

›Hours for lower-titer non-ABO antibodies

›Association with rate and volume infused

›Faster infusion accelerates onset

›Quantify mL already delivered

Associated symptoms

›Systemic complaints

›Sense of impending doom

›Well-described early symptom

›Should not be dismissed as anxiety

›Nausea and vomiting

›May accompany rigors

›Headache co-occurrence

›Chest tightness and dyspnea

›Overlap with TRALI and TACO

03Physical Exam/exam45

Vitals and general

›Stability snapshot

›Temperature

›Rise >= 1 C as a defining sign

›Rigors with spiking fever

›Blood pressure

›SBP < 90 mmHg as shock marker

›MAP < 65 mmHg

›Heart rate and respiratory rate

›Sinus tachycardia expected

›Tachypnea from acidosis or distress

›General appearance

›Diaphoresis and restlessness

›Anxiety and impending doom

›Altered mental status

›Skin findings

›Flushing early

›Jaundice as later hemolysis sign

Organ-system exam

›Cardiopulmonary

›Signs of shock

›Cool clammy peripheries

›Delayed capillary refill

›Pulmonary

›Crackles if fluid overload or ARDS

›Tachypnea

›Abdomen and infusion site

›Flank tenderness

04Differential Diagnosis/ddx56

Transfusion reaction spectrum

›Acute hemolytic transfusion reaction

›ICD-10 T80.910A

›ABO incompatibility most common

›Positive direct antiglobulin test

›Distinguishing features

›Hemoglobinuria and low haptoglobin

›Fever with flank pain

›Febrile non-hemolytic transfusion reaction

›ICD-10 R50.84

›Most common transfusion reaction

›Fever and chills without hemolysis

›Distinguishing features

›Normal haptoglobin

›Negative direct antiglobulin test

›Allergic and anaphylactic reaction

›ICD-10 T80.51XA

›Urticaria and bronchospasm

›Anaphylaxis in IgA-deficient patients

›Distinguishing features

›No hemolysis

›Cutaneous predominance

Respiratory and overload mimics

›Transfusion-related acute lung injury

›Acute respiratory distress within 6 hours

›Bilateral pulmonary infiltrates

›Normotensive or hypotensive

›No hemolysis

05Laboratory Tests/lt55

Hemolysis confirmation

›Direct serologic testing

›Direct antiglobulin test

›Newly positive result is pathognomonic

›May be negative if complexes clear before sampling

›Repeat ABO and Rh typing with crossmatch

›Confirm serologic incompatibility

›Compare pre- and post-transfusion samples

›Indirect antiglobulin test

›Detect circulating recipient antibodies

›Antibody identification panel if non-ABO suspected

›Hemolysis biomarkers

›Plasma free hemoglobin

›Elevated and clears rapidly

›Obtain early for highest yield

›Haptoglobin

›Low or undetectable

›Consumed binding free hemoglobin

›LDH and indirect bilirubin

›LDH elevated from lysed RBCs

›Indirect bilirubin elevated from heme catabolism

Organ function and complications

›Complete blood count

›Falling hemoglobin

›Failure of expected post-transfusion rise

›Spherocytes on peripheral smear

›Platelet trend

›Consumption in DIC

06Diagnostic Tests/dt64

Scoring Systems

›Severity and DIC stratification

›ISTH DIC score

›Platelet count component

›Fibrinogen component

›D-dimer or fibrin marker component

›PT prolongation component

›Score >= 5 compatible with overt DIC

›Volume-based severity estimate

›>= 200 mL incompatible blood as high-mortality threshold

›Smaller volumes lethal in children

›Limitations

›Lab testing does not reliably predict severity

›Clinical trajectory supersedes any score

›AKI staging adjunct

›KDIGO acute kidney injury criteria

›Creatinine rise thresholds

›Urine output thresholds

›Application

›Guide nephrology timing

›Anticipate dialysis need

MRI

›MRI role

›Limited acute utility

›Not required for diagnosis

›Availability and stability constraints

›Problem-solving indications

›Renal cortical necrosis characterization

07Disposition/dispo45

Level of care

›ICU admission

›All confirmed AHTR

›Continuous monitoring required

›Risk of rapid deterioration

›Specific triggers

›Shock or vasopressor need

›DIC with active bleeding

›Renal support readiness

›Oliguria or hyperkalemia

›Dialysis access planning

›Observation insufficient

›Rapid progression risk

›Shock and DIC

›Acute renal failure

›Continuous reassessment

›Hourly urine output

›Serial vital signs

Consultation and reporting

›Mandatory notifications

›Transfusion medicine and blood bank

›Serologic workup

›Quarantine co-components

›Nephrology and hematology

›Early AKI management

›Complex hemolysis support

›Regulatory and safety reporting

›Institutional transfusion safety committee

08Treatment/t68

Immediate resuscitation

›Stop and stabilize

›Stop the transfusion and keep line open with saline

›New tubing and isotonic crystalloid

›Save the unit for analysis

›Aggressive isotonic saline

›Maintain urine output 0.5 to 1 mL/kg/hr

›Bolus then titrate to perfusion

›If refractory hypotension, vasopressor support

›Dopamine IV infusion 2 to 10 mcg/kg/min

›Titrate to MAP >= 65 mmHg

›Forced diuresis to protect kidneys

›Furosemide IV

›40 mg IV bolus initial

›Then 10 to 40 mg/hr continuous infusion

›Avoid if hypotensive

›Forced alkaline diuresis

›Sodium bicarbonate 130 mmol/l in D5W at 200 mL/hr

›Separate dedicated IV line

›Target urinary pH > 6.5

›Stop if arterial pH > 7.5 or no urinary pH response in 2 to 3 hours

Electrolyte and metabolic management

›Hyperkalemia correction

›Membrane stabilization

›Calcium gluconate 1 to 2 g IV over 5 to 10 minutes

›Repeat for persistent ECG changes

›Intracellular shift

›Regular insulin 10 units IV with dextrose

09Special Populations/sp48

Pregnancy

›Maternal considerations

›Higher alloimmunization baseline

›Multiparity increases antibody risk

›Prior pregnancy sensitization

›Resuscitation targets

›Maintain maternal SpO2 >= 95%

›Left lateral tilt to optimize venous return

›Fetal monitoring

›Continuous monitoring when viable gestation

›Obstetric involvement early

›Therapy adjustments

›Volume status caution

›Increased plasma volume baseline

›Balance against pulmonary edema risk

›Medication safety

›Furosemide and bicarbonate as indicated

›Coordinate eculizumab use with specialists

Geriatric

›Physiologic vulnerability

›Reduced cardiac reserve

›Limited tolerance for aggressive fluids

›Higher overload risk

›Reduced renal reserve

›Faster progression to AKI

›Lower threshold for nephrology

›Presentation and management

›Atypical features

10Background/b49

Epidemiology

›Incidence and causes

›Identification failure is the leading cause

›Wrong blood in tube at collection

›Bedside misidentification at administration

›Higher risk groups

›Multiply transfused patients

›Multiparous women

›Sickle cell and thalassemia patients

›Setting-related risk

›Emergency and trauma with bypassed checks

›Centers lacking electronic verification

›Outcomes

›Mortality determinants

›>= 200 mL incompatible blood high-mortality threshold

›Recipient antibody titer

›Pediatric vulnerability

›Small lethal volumes

›Lower physiologic reserve

Pathophysiology

›Immune mechanism

›Antigen-antibody binding

›Preformed IgM against ABO antigens

›Non-ABO IgG alloantibodies

›Complement activation

›Membrane attack complex formation

›Intravascular hemolysis

›Downstream injury

11Patient Discharge Instructions/pdi20

copy discharge instructions

›Transfusion reaction home care

›You had a serious reaction to a blood transfusion

›Take all prescribed medications exactly as directed

›Drink fluids and rest as advised

›Keep all follow-up appointments

›Carry your reaction information

›Keep the transfusion reaction card with you

›Tell every future provider about this reaction

›Wear a medical alert if advised

›Warning signs to return to ER

›Fever or chills

›Dark or red urine

›Passing little or no urine

›New bruising or bleeding

›Lightheadedness or fainting

›Trouble breathing or chest pain

›Follow-up plan

›Blood work to confirm recovery as scheduled

›Kidney function recheck if advised

›Specialist visit if instructed

12References/r14

Guidelines and key sources

›Primary reviews

›Panch SR, Montemayor-Garcia C, Klein HG. Hemolytic Transfusion Reactions. NEJM 2019

›Delaney M, Wendel S, Bercovitz RS, et al. Transfusion Reactions. Lancet 2016

›Jones DE, Walker JJ, Abellada AMP. Hematologic Emergencies. AFP 2024

›Specialty references

›Panch SR, Montemayor C. Hemolytic transfusion reactions. Rossi's Principles of Transfusion Medicine 6e 2022

›Andic N, Teke HU, Gunduz E. Plasma Exchange in Acute Hemolytic Reaction. Transfusion Medicine 2023

›Chou ST, Alsawas M, Fasano RM, et al. ASH 2020 Guidelines for Sickle Cell Disease Transfusion Support. Blood Advances 2020

›Epidemiologic data

›Stone EF, Chacreton D, Jimenez A, et al. Epidemiology of Pediatric Transfusion Reactions. JAMA Network Open 2026

›Institutional hemovigilance program reports

›Coding standards

›ICD-10 T80.910A acute hemolytic transfusion reaction unspecified incompatibility

›SNOMED CT acute hemolytic transfusion reaction disorder concept

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Reviewed by SymptomDx Medical Team · Last reviewed August 18, 2026

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