Transfusion reaction

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Nouman, M., M.D. [2]

Overview

In medicine, a transfusion reaction is any adverse event which occurs because of a blood transfusion. These events can take the form of an allergic reaction, a transfusion-related infection, hemolysis related to an incompatible blood type, or an alteration of the immune system related to the transfusion. The risk of a transfusion reaction must always be balanced against the anticipated benefit of a blood transfusion.

Types of Transfusion Reactions

Febrile Non-hemolytic Transfusion Reaction

This is the most common adverse reaction to a blood transfusion. Symptoms include fever and dyspnea 1 to 6 hours after receiving the transfusion. Such reactions are clinically benign, causing no lasting side effects or problems, but are unpleasant via a blood transfusion is estimated, as of 2006, at 1 per 2 million units transfused. Bacterial infection is a much more common problem (see below).

Bacterial Infection

Blood products can provide an excellent medium for bacterial growth, and can become contaminated after collection while they are being stored. The risk is highest with platelet transfusion, since platelets must be stored near room temperature and cannot be refrigerated. The risk of severe bacterial infection and sepsis is estimated (as of 2001) at about 1 in 50,000 platelet transfusions, and 1 in 500,000 red blood cell transfusions.[1]

Acute Hemolytic Reaction

This is a medical emergency resulting from rapid destruction (hemolysis) of the donor red blood cells by host antibodies. The most common cause is clerical error (i.e. the wrong unit of blood being given to the wrong patient). The symptoms are fever and chills, sometimes with back pain and pink or red urine (hemoglobinuria). The major complication is that hemoglobin released by the destruction of red blood cells can cause acute renal failure.

Anaphylactic Reaction

An anaphylactic (or severe allergic) reaction can occur at a rate of 1 per 30,000-50,000 transfusions. These reactions are most common in people with selective IgA deficiency (although IgA deficiency is often asymptomatic, and people may not know they have it until an anaphylactic reaction occurs). An anaphylactic reaction is a medical emergency, requiring prompt treatment, and may be life-threatening.

Transfusion-associated Acute Lung Injury (TRALI)

TRALI is a syndrome of acute respiratory distress, often associated with fever, non-cardiogenic pulmonary edema, and hypotension. It may occur as often as 1 in 2000 transfusions.[2] Symptoms can range from mild to life-threatening, but most patients recover fully within 96 hours, and the mortality rate from this condition is less than 10%.[3]

Volume Overload

Patients with impaired cardiac function (eg congestive heart failure) can become volume-overloaded as a result of blood transfusion, leading to edema, dyspnea (shortness of breath), and orthopnea (shortness of breath while lying flat). This is sometimes called TACO, or Transfusion Associated Circulatory Overload.

Iron overload

Each transfused unit of red blood cells contains approximately 250 mg of elemental iron. Since elimination pathways for iron are limited, a person receiving numerous red blood cell transfusions can develop iron overload, which can in turn damage the liver, heart, kidneys, and pancreas. The threshold at which iron overload becomes significant is somewhat unclear, but is likely around 12-20 units of red blood cells transfused.

Transfusion-associated Graft-vs-Host Disease (GvHD)

GVHD refers to an immune attack by transfused cells against the recipient. This is a common complication of stem cell transplantation, but an exceedingly rare complication of blood transfusion. It occurs only in severely immunosuppressed patients, primarily those with congenital immune deficiencies or hematologic malignancies who are receiving intensive chemotherapy. When GVHD occurs in association with blood transfusion, it is almost uniformly fatal.[4] Transfusion-associated GVHD can be prevented by irradiating the blood products prior to transfusion.

Transfusion-associated Microchimerism (TA-MC)

Transfusion-associated microchimerism is the stable persistence of donor's genetically distinct cells (usually <5%) in a recipient's circulation following fresh blood transfusion, especially in the setting of trauma.[5] As a result of the current advancement in polymerase chain reaction techniques, TA-MC has been demonstrated among patients with trauma following blood transfusion, pregnancy and organ or stem cell transplantation. Several studies have implicated other forms of microchimerism, including fetomaternal microchimerism, with acute and chronic illnesses such as congenital heart block in a patient with neonatal lupus erythematosus[6] and systemic sclerosis.[7]

Genetic factors such as the TNF (-308A) single nucleotide polymorphisms (SNP) have been implicated in the development of TA-MC. The risk of developing TA-MC is largely dependent on the clinical setting, i.e., it is rare in situations which do not involve massive trauma. [8] Although leukoreduction removes > 99.9% of donor's white blood cells, it has not been proven to prevent the development of TA-MC.[9]

Treatment of Transfusion Reactions

The most important step in treating a presumed transfusion reaction is to stop the transfusion immediately (saving the remaining blood and IV tubing for testing) and to provide supportive care to the patient. More specific treatments depend on the nature and presumed cause of the transfusion reaction. Most hospitals and medical centers have transfusion reaction protocols, which specify testing of the blood product and patient for hemolysis, bacterial contamination, etc.

The following table shows different types of transfusion reactions along with their treatment,

Transfusion Reaction Time of onset Fever Rigors Rash Blood Pressure Respiratory Distress Additional Features Labs Treatment Prevention
Febrile Non-hemolytic Transfusion Reaction
  • 1/2 to 1 hour
+ + -
  • No Effect
+/-
  • can occur in first few hours
  • fever rise of 1-2
  • No labs usually required
  • Slow or Stop the transfusion
  • Give Acetaminophen for fever
  • Leukoreduction
Bacterial Infection
  • Rapid onset
++ + +/-
  • Hypotension is common
  • occasionally hypertension
+/-
  • fever > 2
  • tachycardia
  • CBC
  • Urine complete examination
  • blood and urine culture
  • transfusion set culture
  • clotting profile
  • Stop the transfusion
  • Check identity on blood unit
  • look for clerical errors
  • Supportive management(O2 inhalation,normal saline)
  • broad spectrum antibiotics for bacterial infections
  • inform blood bank
  • Extensive screening of blood
  • decrease storage time
  • leukodepletion
  • bactericidal treatment
Acute Hemolytic Reaction
  • Rapid onet
+ + +/-
  • Hypotension
+/-
  • Chest pain
  • apprehension
  • flank pain
  • dark urine
  • oozing from venipuncture site ( DIC)
  • CBC
  • Urine complete examination
  • ABO compatibility
  • Serum haptoglobin
  • Serum LDL
  • Serum bilirubin
  • clotting profile
  • coomb's test
  • Stop the transfusion immediately
  • look for clerical errors
  • alert blood bank
  • maintain IV access
  • supportive management
  • to prevent renal failure-give low dose dopamine,normal saline,mannitol for diuresis
  • Treat DIC(if happens)
  • Avoid clerical errors
  • proper storage record
  • repeat type and screen before transfusion
  • proper blood storage conditions
Anaphylactic Reaction
  • Rapid onset
- - -
  • Hypotension
+
  • Wheezing
  • stridor
  • cyanosis
  • soft tissue edema
  • CBC
  • spO2 monitoring
  • type and screen
  • Stop the transfusion immediately
  • S/C epinephrine
  • IV epinephrine(in case of severe hypotension)
  • Avoid clerical errors
  • proper storage record
  • repeat type and screen before transfusion
  • proper blood storage conditions
Transfusion-related acute lung injury (TRALI) within 6 hours +/- +/- -
  • Hypotension
++
  • cough
  • pink frothy sputum
  • ABGs
  • CBC
  • spO2 monitoring
  • CXR-pulmonary infiltrates
  • HLA typing(remove donor from the list)
  • Stop the transfusion immediately
  • O2 inhalation
  • ventilatory support
  • supportive treatment
  • Diuretics for volume overload
  • inform the blood bank
  • consult hematologist
  • donor whose blood cause TRALI must be put on non-donor list
Transfusion-associated circulatory overload (TACO) usually over hours - - -
  • Hypertension
+++
  • dyspnea
  • orthopnea
  • cough
  • headache
  • tachycardia
  • decrease spO2
  • increase JVP
  • increase CVP
  • spO2 monitoring
  • CXR
  • serum BNP
  • ABGs
  • Stop transfusion
  • Supportive therapy
  • O2 supplementation
  • ventilatory support
  • diuretics
  • exchange transfusion(if transfusion is unavoidable)
  • controlled phelbotomy
  • slow rate of transfusion
  • avoid unnecessary transfusion
  • cardiac evluation

Transfusion-related acute lung injury (TRALI) can be differentiated from Transfusion associated circulatory overload (TACO) as followed,

Parameters Transfusion-related acute lung injury (TRALI) Transfusion-associated circulatory overload (TACO)
Fever +/- -
Blood pressure hypotension hypertension
Respiratory Distress + +
JVP non-distended distended
Respiratory auscultation Rales Rales + S3 heart sounds may be present
CXR bilateral pulmonary infiltrates bilateral pulmonary infiltrates
Fluid balance neutral positive
Diuretics responsive only when there is fluid overload Improvement with diuretics
Ejection fraction normal decrease
BNP <250 pg/mL >1200 pg/mL
PCWP <18 mm Hg >18 mm Hg
WBC unchanged transient decrease

See also

External links

References

  1. Blajchman, Morris A; Goldman, Mindy (2001). "Bacterial contamination of platelet concentrates: Incidence, significance, and prevention". Seminars in Hematology. 38: 20–26. doi:10.1016/S0037-1963(01)90120-9. ISSN 0037-1963.
  2. Silliman CC, Paterson AJ, Dickey WO, Stroneck DF, Popovsky MA, Caldwell SA; et al. (1997). "The association of biologically active lipids with the development of transfusion-related acute lung injury: a retrospective study". Transfusion. 37 (7): 719–26. PMID 9225936.
  3. Gajic, Ognjen; Moore, S. Breanndan (2005). "Transfusion-Related Acute Lung Injury". Mayo Clinic Proceedings. 80 (6): 766–770. doi:10.4065/80.6.766. ISSN 0025-6196.
  4. Linden JV, Pisciotto PT (1992). "Transfusion-associated graft-versus-host disease and blood irradiation". Transfus Med Rev. 6 (2): 116–23. PMID 1591488.
  5. Kunadian V, Zorkun C, Gibson WJ, Nethala N, Harrigan C, Palmer AM; et al. (2009). "Transfusion associated microchimerism: a heretofore little-recognized complication following transfusion". J Thromb Thrombolysis. 27 (1): 57–67. doi:10.1007/s11239-008-0268-0. PMID 18766299.
  6. Adams KM, Nelson JL (2004). "Microchimerism: an investigative frontier in autoimmunity and transplantation". JAMA. 291 (9): 1127–31. doi:10.1001/jama.291.9.1127. PMID 14996783.
  7. Nelson JL, Furst DE, Maloney S, Gooley T, Evans PC, Smith A; et al. (1998). "Microchimerism and HLA-compatible relationships of pregnancy in scleroderma". Lancet. 351 (9102): 559–62. doi:10.1016/S0140-6736(97)08357-8. PMID 9492775.
  8. Sanchez R, Lee TH, Wen L, Montalvo L, Schechterly C, Colvin C; et al. (2012). "Absence of transfusion-associated microchimerism in pediatric and adult recipients of leukoreduced and gamma-irradiated blood components". Transfusion. 52 (5): 936–45. doi:10.1111/j.1537-2995.2011.03366.x. PMC 3257351. PMID 21981710.
  9. Utter GH, Nathens AB, Lee TH, Reed WF, Owings JT, Nester TA; et al. (2006). "Leukoreduction of blood transfusions does not diminish transfusion-associated microchimerism in trauma patients". Transfusion. 46 (11): 1863–9. doi:10.1111/j.1537-2995.2006.00991.x. PMID 17076839.


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