Tareq Abadl: What Happens If You Transfuse the Wrong Blood Group?
Tareq Abadl, Medical Lab Specialist, shared a post on LinkedIn:
“What Happens If You Transfuse the Wrong Blood Group?
Imagine a patient urgently needs blood.
The transfusion starts, but the blood unit is incompatible with the patient’s blood group.
What happens next?
The patient’s immune system immediately recognizes the donor red blood cells as foreign.
Naturally occurring antibodies bind to the incompatible cells and trigger their destruction inside the bloodstream.
This can result in an Acute Hemolytic Transfusion Reaction (AHTR) — one of the most serious complications in transfusion medicine.
Signs and symptoms may include:
- Fever and chills
- Severe back or chest pain
- Shortness of breath
- Dark or red-colored urine
- Low blood pressure
- Acute kidney injury
In severe cases, the reaction can progress to shock, disseminated intravascular coagulation (DIC), multiple organ failure, and even death.
This is why blood bank professionals never rely on blood group labels alone.
Before a blood unit reaches a patient, several critical steps are performed:
- ABO and Rh typing
- Antibody screening
- Crossmatching
- Strict patient identification procedures.”
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